Denise C. Gabuzda Full Publication List September 18, 2009

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1 Denise C. Gabuzda Full Publication List September 18, 2009 Refereed Publications I. Contopoulos, D. M. Christodoulou, D. Kazanas and D. C. Gabuzda, The Invariant Twist of Magnetic Fields in the Relativistic Jets of Active Galactic Nuclei, Astrophysical Journal, 702, L148 (2009). P. Kharb, D. C. Gabuzda, C. P. O Dea, P. Shastri and S. A. Baum, Rotation Measures Across Parsec-Scale Jets of Fanaroff-Riley Type I Radio Galaxies, Astrophysical Journal, 694, 1485 (2009). S. P. O Sullivan and D. C. Gabuzda, Three-Dimensional Magnetic Field Structure of Six Parsec-Scale Active Galactic Nuclei Jets, Monthly Notices of the Royal Astronomical Society, 393, 429 (2009). D. C. Gabuzda and M. M. Lisakov, Unusual Properties of the Radio Structure of the BL Lac Object on Parsec Scales, Astronomy Reports, 53, 51 (2009). S. M. Croke and D. C. Gabuzda, Aligning VLBI Images of Active Galactic Nuclei at Different Frequenies, Monthly Notices of the Royal Astronomical Society, 386, 619 (2008). D. C. Gabuzda, V. M. Vitrishchak, M. Mahmud, S. P. O Sullivan, Radio Circular Polarization Produced in Helical Magnetic Fields in Eight Active Galactic Nuclei, Monthly Notices of the Royal Astronomical Society, 384, 1003 (2008). P. Kharb, D. C. Gabuzda, P. Shastri, Parsec-scale Magnetic-Field Structures in HEAO-1 BL Lacs Monthly Notices of the Royal Astronomical Society, 384, 230 (2008). V. M. Vitrishchak, D. C. Gabuzda, J. C. Algaba, E. A. Rastorgueva, S. P. O Sullivan and A. O Dowd, The GHz Parsec-Scale Circular Polarization of 41 Active Galactic Nuclei, Monthly Notices of the Royal Astronomical Society, 391, 124 (2008). J. C. Algaba, D. C. Gabuzda and P. S. Smith, Investigation of Correlations Between the Optical and VLBI Core Polarization of AGN, International Journal of Modern Physics D, 17 (9), 1537 (2008). D. C. Gabuzda, A Framework for Interpreting Observed Phenomena Associated with Relativistic Outflows in AGN, International Journal of Modern Physics D, 17 (9), 1521 (2008). S. P. O Sullivan and D. C. Gabuzda, Parsec-Scale Investigation of the Magnetic Field Structure of Several AGN Jets, International Journal of Modern Physics D, 17 (9), 1553 (2008). V. M. Vitrishchak and D. C. Gabuzda, The Parsec-Scale Circular Polarization of Active Galactic Nuclei at 22 and 15 GHz, International Journal of Modern Physics D, 17 (9), 1531 (2008). T. B. Pyatunina, N. A. Kudryavtseva, D. C. Gabuzda, S. G. Jorstad, M. F. Aller, H. D.

2 Aller, H. Tersranta, H., Frequency-dependent time delays for strong outbursts in selected blazars from the Metshovi and UMRAO monitoring data bases - II, Monthly Notices of the Royal Astronomical Society, 382, 797 (2007). V. M. Vitrishchak, D. C. Gabuzda, New measurements of the circular polarization of the radio emission of Active Galactic Nuclei on parsec scales, Astronomy Reports, 51, 695 (2007). T. B. Pyatunina, N. A. Kudryavtseva, D. C. Gabuzda, S. G. Jorstad, M. F. Aller, H. D. Aller, H. Tersranta, H., Frequency-dependent time delays for strong outbursts in selected blazars from the Metshovi and UMRAO monitoring data bases - I, Monthly Notices of the Royal Astronomical Society, 373, 1470 (2006). A. Papageorgiou, T. V. Cawthorne, A. Stirling, D. C. Gabuzda, A. G. Polatidis, Space very long baseline interferometry observations of polarization in the jet of 3C380, Monthly Notices of the Royal Astronomical Society, 373, 449 (2006). P. Charlot, D. C. Gabuzda, H. Sol, B. Degrange, F. Piron, Simultaneous radio-interferometric and high-energy TeV observations of the gamma-ray blazar Mkn 421, Astronomy & Astrophysics, 457, 455 (2006). D. C. Gabuzda, E. A. Rastorgueva, P. S. Smith, S. P. O Sullivan, Evidence for Co-Spatial Optical and Radio Polarised Emission in Active Galactic Nuclei, Monthly Notices of the Royal Astronomical Society, 369, 1596 (2006). I. Agudo, J. L. Gomez, D. C. Gabuzda, A. P. Marscher, S. G. Jorstad, A. Alberdi, The VLBI Jet of During Quiescence, Astronomy & Astrophysics, 453, 477 (2006). P. Kharb, P. Shastri, D. C. Gabuzda, When Less is More: Are Radio Galaxies below the Fanaroff-Riley Break More Polarized on Parsec Scales? Astrophysical Journal, 632, L69 (2005). M. Lyutikov, V. I. Pariev, D. C. Gabuzda, Polarization and Structure of Relativistic Parsec-scale AGN Jets, Monthly Notices of the Royal Astronomical Society, 360, 869 (2005). A. B. Pushkarev, D. C. Gabuzda, Yu. N. Vetukhnovskaya, V. E. Yakimov, Spine-sheath Polarisation Strucures in Four AGN Jets, Monthly Notices of the Royal Astronomical Society, 356, 859 (2005). D. V. Lal, P. Shastri, D. C. Gabuzda, Milliarcsecond-scale Radio Structure of a Matched Sample of Seyfert 1 and Seyfert 2 Galaxies, Astronomy & Astrophysics, 425, 99 (2004). D. C. Gabuzda, É. Murray, P. Cronin, Helical Magnetic Fields Associated with the Relativistic Jets of Four BL Lac Objects, Monthly Notices of the Royal Astronomical Society, 351, L89 (2004). H. Zhang, D. C. Gabuzda, R. Nan, C. Jin, Parsec-Scale Rotation-Measure Distribution in the Quasar 3C147 at 8 GHz, Astronomy & Astrophysics, 415, 477 (2004).

3 T. A. Rector, D. C. Gabuzda, J. T. Stocke, The Radio Structure of High-Energy Peaked BL Lacertae Objects, Astronomical Journal, 125, 1060 (2003). D. C. Gabuzda, V. A. Chernetskii, Parsec-scale Faraday Rotation Distribution in the BL Lac Object , Monthly Notices of the Royal Astronomical Society, 339, 669 (2003). D. C. Gabuzda, T. V. Cawthorne, The Parsec-scale Radio Jet of BL Lac, Monthly Notices of the Royal Astronomical Society, 338, 312 (2003). D. C. Gabuzda, Polarization Characteristics and Variability of the Compact Radio Structures of AGN, Publications of the Astronomical Society of Australia, 19, 147 (2002). D. C. Gabuzda, J.-L. Gómez, I. Agudo, Evidence for Parsec-Scale Absorption from VSOP Observations of the BL Lacertae Object , Monthly Notices of the Royal Astronomical Society, 328, 719 (2001). I. Agudo, J. L. Gómez, J. C. Guirado, A. P. Marscher, A. Alberdi, J. Marcaide, D. C. Gabuzda, Changes in the trajectory of the radio jet in , Monthly Notices of the Royal Astronomical Society, 328, 873 (2001). C. R. Reynolds, T. V. Cawthorne, D. C. Gabuzda, Faraday Rotation in the Core of BL Lacertae, Monthly Notices of the Royal Astronomical Society, 327, 1071 (2001). D. C. Gabuzda, A. B. Pushkarev, N. N. Garnich, Unusual Radio Properties of the BL Lac Object , Monthly Notices of the Royal Astronomical Society, 327, 1 (2001). J. M. Hutchison, T. V. Cawthorne, D. C. Gabuzda, Parsec-scale polarization of the jet in quasar 4C71.07, Monthly Notices of the Royal Astronomical Society, 321, 525 (2001). D. C. Gabuzda, J.-L. Gómez, VSOP Polarization Observations of the BL Lacertae Object OJ287, Monthly Notices of the Royal Astronomical Society, 320, L49 (2001). D. C. Gabuzda, A. B. Pushkarev, T. V. Cawthorne, Analysis of λ = 6 cm VLBI Polarization Observations of a Complete Sample of Northern BL Lacertae Objects, Monthly Notices of the Royal Astronomical Society, 319, 1109 (2000). D. C. Gabuzda, P. Yu. Kochenov, T. V. Cawthorne, Seredipitious VLBI Observations of Polarization Intraday Variability in Three BL Lacertae Objects, Monthly Notices of the Royal Astronomical Society, 319, 1125 (2000). D. C. Gabuzda, T. V. Cawthorne, VLBI Polarization Images of Eight Compact AGN at λ = 1.3 cm, Monthly Notices of the Royal Astronomical Society, 319, 1056 (2000). A. Kemball, C. Flatters, D. Gabuzda, G. Moellenbrock, P. Edwards, E. Fomalont, H. Hirabayashi, S. Horiuchi, M. Inoue, H. Kobayashi, Y. Murata, VSOP Polarization Observing at 1.6 GHz and 5 GHz, Publications of the Astronomy Society of Japan, 52, 1055 (2000). R. D. Nan, H. Y. Zhang, D. C. Gabuzda, J. S. Ping, R. T. Schilizzi, W. W. Tian, M. Inoue, High Rotation Measure in the Steep Spectrum Quasar 3C 147, Astronomy &

4 Astrophysics, 357, 891 (2000). D. V. Lal, P. Shastri, D. C. Gabuzda, Seyferts at Milliarcsecond Scales, Bulletin of the Astronomical Society of India, 28, 403 (2000). D. C. Gabuzda, P. Yu. Kochenov, R. I. Kollgaard, T. V. Cawthorne, VLBI and VLA Observations of Intraday Polarization Variability in and , Monthly Notices of the Royal Astronomical Society, 315, 229 (2000). D. C. Gabuzda, P. Yu. Kochenov, T. V. Cawthorne, R. I. Kollgaaard, Intraday Polarization Variability Outside the VLBI core of the Active Galactic Nucleus , Monthly Notices of the Royal Astronomical Society, 313, 627 (2000). R. D. Nan, H.-Y. Zhang, D. C. Gabuzda, M. Inoue, VLBI Polarimetry Observation of the BL Lacertae Object , Publications of the Astronomical Society of Japan, 51, 955 (1999). D. C. Gabuzda, A. B. Pushkarev, T. V. Cawthorne, The λ = 6 cm VLBI Polarization Structure of Nine BL Lacertae Objects, Monthly Notices of the Royal Astronomical Society, 307, 725 (1999). D. C. Gabuzda, VSOP Observations of the Compact BL Lac Object , New Astronomy Reviews, 43, 691 (1999). A. B. Pushkarev, D. C. Gabuzda, Global VLBI Polarisation Observations of BL Lacertae Objects, New Astronomy Reviews, 43, 695 (1999). J.-L. Gomez, A. P. Marscher, A. Alberdi, D. C. Gabuzda, The Twisted Parsec-Scale Structure of , Astrophysical Journal, 519, 642 (1999). R. Nan, D. C. Gabuzda, S. Kameno, R. T. Schilizzi, M. Inoue, VLBI Polarimetry of the High Rotation Measure Source 3C119 at 8.4 GHz, Astronomy & Astrophysics, 344, 402 (1999). D. C. Gabuzda, A. J. Mioduszewski, J. F. C. Wardle, D. H. Roberts, The VLBI Polarization Structure of 3C345 at 2.8 cm, Monthly Notices of the Royal Astronomical Society, 303, 515 (1999). D. C. Gabuzda, Yu. Yu. Kovalev, T. P. Krichbaum, W. Alef, A. Kraus, A. Witzel, A. Quirrenbach, VLBI polarization observations of the rapidly variable BL Lacertae object , Astronomy & Astrophysics, 333, 445 (1998). M. Peracaula, D. C. Gabuzda, A. R. Taylor, Rapid Expansion in the VLBI Structure of LSI 61303, Astronomy & Astrophysics, 330, p. 612 (1998). D. C. Gabuzda, P. Yu. Kochanev, VLBI Polarization Observations of Intraday Variability, Vistas in Astronomy, 41, p. 219 (1997). M. Massi, M. Rioja, D. Gabuzda, K. Leppänen, H. Sanghera, K. Ruf, L. Moscadelli, Nonclosing Errors in EVN Data, Vistas in Astronomy, 41, p. 287 (1997).

5 M. Massi, M. Rioja, D. Gabuzda, K. Leppänen, H. Sanghera, K. Ruf, L. Moscadelli, Baseline Errors in European VLBI Network Measurements. III. The Dominant Effect of Instrumental Polarization, Astronomy & Astrophysics, 318, L32 (1997). D. C. Gabuzda, M. L. Sitko, P. S. Smith, Correlations Between the VLBI and Optical Polarization of BL Lacertae Objects, Astronomical Journal, 112, 1877 (1996). D. C. Gabuzda, T. V. Cawthorne, The Parsec-scale Polarization Structure of Nine BL Lacertae Objects at λ = 3.6 cm, Monthly Notices of the Royal Astronomical Society, 283, 759 (1996). R. I. Kollgaard, D. C. Gabuzda, E. D. Feigelson, Parsec-Scale Radio Structure of Five X-ray Selected BL Lacertae objects, Astrophysical Journal, 460, 174 (1996). T. V. Cawthorne, D. C. Gabuzda, Milliarcsecond-Scale Polarization Structure in the Quasars 3C 279 and 3C 454.3, Monthly Notices of the Royal Astronomical Society, 278, 861 (1996). D. C. Gabuzda, Possible Links Between BL Lacertae Objects and Quasars from VLBI Data, Proceedings of the National Academy of Sciences, No. 5, p (1995). D. C. Gabuzda, Relyativistskoe dvizhenie v yadrakh galaktik v kurse obshchei fiziki (Relativistic Motion in the Nuclei of Galaxies in a General Physics Course), Journal of the Moscow Physical Society, Series B, 1, 57 (1995). D. C. Gabuzda, J. F. C. Wardle, D. H. Roberts, M. F. Aller, H. D. Aller, Unusual Evolution in the VLBI Structure of ,, Astrophysical Journal, 435, 128 (1994). D. C. Gabuzda, C. M. Mullan, T. V. Cawthorne, J. F. C. Wardle, D. H. Roberts, Evolution of the Milliarcsecond Total Intensity and Polarization Structures of BL Lacertae Objects, Astrophysical Journal, 435, 140 (1994). D. C. Gabuzda, M. L. Sitko, Nearly Simultaneous VLBI and Optical Polarimetry of Blazars, Astronomical Journal, 107, 884 (1994). T. V. Cawthorne, J. F. C. Wardle, D. H. Roberts, D. C. Gabuzda, L. F. Brown, Milliarcsecond Polarization Structure of 24 Objects from the Pearson-Readhead Sample of Bright Extragalactic Radio Sources. I. The Images, Astrophysical Journal, 416, 496 (1993). T. V. Cawthorne, J. F. C. Wardle, D. H. Roberts, D. C. Gabuzda, Milliarcsecond Polarization Structure of 24 Objects from the Pearson-Readhead Sample of Bright Extragalactic Radio Sources. II. Discussion, Astrophysical Journal, 416, 519 (1993). D. C. Gabuzda, R. I. Kollgaard, D. H. Roberts, J. F. C. Wardle, Is a BL Lacertae Object or a Quasar?, The Astrophysical Journal, 410, 39 (1993). D. C. Gabuzda, The Charge Densities in a Current-Carrying Wire, American Journal of Physics, 61, 360 (1993). R. I. Kollgaard, J. F. C. Wardle, D. H. Roberts, D. C. Gabuzda, The Arcsecond Radio Structure of BL Lacertae Objects, Astronomical Journal, 104, 1687 (1992).

6 J.-F. Lestrade, R. B. Phillips, R. A. Preston, D. C. Gabuzda, High-precision VLBI astrometry of the radio-emitting star Sigma Corona Borealis - A step in linking the Hipparcos and extragalactic reference frames, Astronomy & Astrophysics,258, 112 (1992). D. C. Gabuzda, T. V. Cawthorne, D. H. Roberts, J. F. C. Wardle, A Survey of the Milliarcsecond Polarization Properties of BL Lacertae Objects, Astrophysical Journal, 388, 40 (1992). D. H. Roberts, R. I. Kollgaard, L. F. Brown, D. C. Gabuzda, J. F. C. Wardle, Milliarcsecond Polarization Structure of the Superluminal Quasar 3C273, Astrophysical Journal, 360, 408 (1990). D. C. Gabuzda, T. V. Cawthorne, D. H. Roberts, J. F. C. Wardle, VLBI Linear Polarization Structure of Six BL Lacertae Objects, Astrophysical Journal, 347, 701 (1989). D. C. Gabuzda, J. F. C. Wardle, D. H. Roberts, Linear Polarization Structure of the BL Lacertae Object at Milliarcsecond Resolution, Astrophysical Journal, 338, 743 (1989). D. C. Gabuzda, J. F. C. Wardle, D. H. Roberts, Superluminal Motion in the BL Lacertae Object OJ 287, Astrophysical Journal, 336, L59 (1989). D. H. Roberts, D. C. Gabuzda, J. F. C. Wardle, Linear Polarization Structure of the BL Lacertae Object OJ287 at Milliarcsecond Resolution, Astrophysical Journal, 323, 536 (1987). D. C. Gabuzda, Magnetic Force Due to a Current-Carrying Wire: A Paradox and Its Resolution, American Journal of Physics, 55, 420 (1987). D. C. Gabuzda, The Use of Quasars in Teaching Introductory Special Relativity, American Journal of Physics, 55, 214 (1987). Non-Refereed Publications K. Asada, S. Kameno, Z.-Q. Shen, H. Shinji, D. C. Gabuzda and M. Inoue, 3C84 Expanding Radio Lobe Revealed by VSOP Observations, in Approaching Micro-Arcsecond Resolution with VSOP-2, ASP Conf. Ser., 402, 91 (2008). D. C. Gabuzda, VSOP s Legacy for our Understanding of Magnetic Fields in Active Galactic Nuclei, in Approaching Micro-Arcsecond Resolution with VSOP-2, ASP Conf. Ser., 402, 236 (2008). M. Mahmud and D. C. Gabuzda, The Promise of Future VSOP-2 Observations for Studies of Helical Magnetic Fields and Their Evolution in Active Galactic Nuclei, in Approaching Micro-Arcsecond Resolution with VSOP-2, ASP Conf. Ser., 402, 280 (2008). S. P. O Sullivan and D. C. Gabuzda, The Need for High Resolution in Studies of the 3-D

7 Magnetic Field Structure of AGN Jets, in Approaching Micro-Arcsecond Resolution with VSOP-2, ASP Conf. Ser., 402, 209 (2008). J. C. Algaba, D. C. Gabuzda and P. S. Smith, Investigation of Correlations Between the Optical and Radio Polarization of AGN, in Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, ASP Conf. Ser., 386, 483 (2008). D. C. Gabuzda, V. M. Vitrishchak, M. Mahmud and S. P. O Sullivan, Circular Polarization and Helical B Fields in AGN, in Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, ASP Conf. Ser., 386, 444 (2008). M. Mahmud and D. C. Gabuzda, Searching for Helical Magnetic Fields in Active Galactic Nuclei, in Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, ASP Conf. Ser., 386, 494 (2008). M. Mahmud, D. C. Gabuzda and V. Bezrukovs, Surprising Evolution of Faraday Rotation Gradients inthe Jet of S , in Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, ASP Conf. Ser., 386, 501 (2008). S. P. O Sullivan and D. C. Gabuzda, Investigation of the Faraday Rotation Measure and Magnetic Field Structures of Several AGN Jets on Sub-Parsec to Parsec Scales, in Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, ASP Conf. Ser., 386, 284 (2008). P. Veres and D. C. Gabuzda, Magnetic Field Structures of BL Lac Objects on Decaparsec Scales, in Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, ASP Conf. Ser., 386, 270 (2008). J. C. Algaba, D. C. Gabuzda and P. S. Smith, Hints of High Core Faraday Rotations from a Joint Analysis of VLBA and Optical Polarization Data, in Proceedings of the 9th European VLBI Network Symposium, Proceedings of Science, 072/006/IX%20EVN%20Symposium 006.pdf (2008). D. C. Gabuzda and V. M. Vitrishchak, The GHz Parsec-Scale Circular Polarization of AGN, in Proceedings of the 9th European VLBI Network Symposium, Proceedings of Science, pdf (2008). D. R. Hallahan and D. C. Gabuzda, The Deca-Parsec Scale Radio Structures of BL Lac Objects, in Proceedings of the 9th European VLBI Network Symposium, Proceedings of Science, pdf (2008). N. A. Kudravtseva, S. Britzen, M. F. Aller, H. D. Aller, D. C. Gabuzda, S. G. Jorstad, H.

8 Terasranta, A. Witzel and J. A. Zensus, in Proceedings of the 9th European VLBI Network Symposium, Proceedings of Science, IX%20EVN%20Symposium 008.pdf (2008). M. Mahmud and D. C. Gabuzda, Using Faraday Rotation Gradients to Probe Magnetic Tower Models, in Blazar Variability Across the Electromagnetic Spectrum, Proceedings of Science, pdf (2008). S. P. O Sullivan and D. C. Gabuzda, AGN Jet Physics from Measurements of the Frequency- Dependent Position of the VLBI Radio Core, in Blazar Variability Across the Electromagnetic Spectrum, Proceedings of Science, IX%20EVN%20Symposium 016.pdf (2008). D. R. Hallahan and D. C. Gabuzda, Multi-Epoch Observations of BL Lac Objects on Decaparsec Scales, in Blazar Variability Across the Electromagnetic Spectrum, Proceedings of Science, pdf (2008). M. Mahmud and D. C. Gabuzda, Evidence for the Generation of Helical Magnetic Fields in Active Galactic Nuclei, in From Planets to Dark Energy: The Modern Radio Universe, Proceedings of Science, pdf (2007). V. Bezrukovs and D. C. Gabuzda, Analysis of the Multi-Wavelength Polarization VLBI Observations of BL Lac Objects, in Proceedings of the 8th European VLBI Network Symposium, Proceedings of Science, pdf (2006). D. C. Gabuzda, The Compact Polarised Emission of AGN, in Proceedings of the 8th European VLBI Network Symposium, Proceedings of Science, 036/011/8thEVN 011.pdf (2006). M. Mahmud and D. C. Gabuzda, Searching for Helical Magnetic Fields in BL Lac Objects, in Proceedings of the 8th European VLBI Network Symposium, Proceedings of Science, pdf (2006) S. P. O Sullivan and D. C. Gabuzda, Using Faraday Rotation Sign Reversals to Study Magnetic Fields in AGN Jets, in Proceedings of the 8th European VLBI Network Symposium, Proceedings of Science, pdf (2006). S. Croke, P. Charlot, D. C. Gabuzda, and H. Sol, Multi-Frequency, Multi-Epoch VLBA Polarization Observations of Mrk501, Baltic Astronomy, 14, 367 (2005).

9 D. C. Gabuzda, The jets of radio-loud AGN from subparsec to kiloparsec scales, in Radio Astronomy at 70: from Karl Jansky to Microjansky, EAS Publicatoins Series, 15, 109 (2005). D. C. Gabuzda, E. Murray and P. Cronin, Evidence for Toroidal B Field Structures in BL Lac Objects, Baltic Astronomy, 14, 363 (2005). D. C. Gabuzda and V. M. Vitrishchak, Parsec-Scale Circular Polarization Measurements of BL Lac Objects, Baltic Astronomy, 14, 371 (2005). E. A. Rastorgueva, D. C. Gabuzda and P. S. Smith, Links Between the Optical and Radio Polarization of AGN, Baltic Astronomy, 14, 403 (2005). S. Croke, P. Charlot, D. C. Gabuzda, and H. Sol, Multi-Frequency, Multi-Epoch VLBA Polarization Observations of Mrk501, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 177 (2005). D. C. Gabuzda and E. Murray, In Search of Evidence for Toroidal B Fields Associated with the Jets of AGN, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 72 (2005). D. C. Gabuzda and V. M. Vitrishchak, Parsec-Scale Circular Polarization Measurements of BL Lac Objects, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 180 (2005). D. C. Gabuzda and A. Golden, A Radio Telescope for Ireland, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 566 (2005). E. Middelberg, A. L. Roy, U. Bach, D. C. Gabuzda, and T. Beckert, Where has all the Polarization Gone?, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 189 (2005). T. B. Pyatunina, D. C. Gabuzda, S. G. Jorstadt, M. F. Aller, H. D. Aller, and H. Teräsranta, Multi-frequency Polarization Imaging of Blazars with Cyclic Activity, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 198 (2005). T. B. Pyatunina, N. A. Kudryavtseva, D. C. Gabuzda, S. G. Jorstadt, M. F. Aller, H. D. Aller, and H. Teräsranta, Analysis of Strong Outbursts in Selected Blazars from the Metsähovi and UMRAO Monitoring Databases, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 113 (2005).

10 T. Rector, K. Peterson, and D. C. Gabuzda, The Propagation of Jets in High-Energy- Peaked BL Lac Objects, in Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA, ASP Conf. Ser., 340, 116 (2005). M. Lyutikov, V. Pariev, D. Gabuzda, Polarizaton and Energy Content of Parsec-scale AGN Jets, Mem. Soc. Astron. Ital., 76, 114 (2005). D. C. Gabuzda, What We ve Learned from VSOP Polarization Observations, in Radio Astronomy at the Fringe, Eds. J. A. Zensus, M. H. Cohen and E. Ros, ASP Conf. Ser. 300, in press (2003). D. C. Gabuzda, The Nature of Compact Parsec-Scale Knots in AGN: Clues from their Polarisation Properties, New Astronomy Reviews, 47, (2003). P. Kharb, D. C. Gabuzda, W. Alef, E. Preuss, and P. Shastri, Magnetic Field Geometry of the Broad Line Radio Galaxy 3C111, New Astronomy Reviews, 47, (2003). P. Kharb, P. Shastri and D. C. Gabuzda, A Parsec-Scale Study of Radio Galaxies and BL Lac Objects, New Astronomy Reviews, 47, (2003). C. Reynolds, T. V. Cawthorne, D. C. Gabuzda, Kinematics of the pc-scale jet in BL Lac, New Astrononomy Reviews, 47, (2003). D. C. Gabuzda, VLBI Polarisation Properties of a Complete Sample of Radio-Loud BL Lacs, Astrophysics & Space Science, 288 (1), (2003). P. Shastri, P. K. Kharb and D. C. Gabuzda, Magnetic Fields in Red and Blue BL Lacs, Astrophysics & Space Science, 288(1), (2003). D. C. Gabuzda, VSOP Polarisation Images of Three BL Lac Objects, High Energy Blazar Astronomy, Eds. L. O. Takalo and E. Valtaoja, ASP Conf. Ser. 299, p. 99 (2003). D. C. Gabuzda and E. A. Rastorgueva, Rapid Evolution of the Parsec Scale Structure of the BL Lac Object , in High Energy Blazar Astronomy, Eds. L. O. Takalo and E. Valtaoja, ASP Conf. Ser. 299, p. 105 (2003). T. B. Pyatunina, I. A. Rachimov, A. A. Zborovskii, D. C. Gabuzda S. G. Jorstad, H. Teräsranta, M. F. Aller, and H. D. Aller, Quasi-periodic Activity in the Blazar , in High Energy Blazar Astronomy, Eds. L. O. Takalo and E. Valtaoja, ASP Conf. Ser. 299, p. 89 (2003). P. Shastri, D. Vir Lal and D. C. Gabuzda, Jets in Seyfert Galaxies, in Active Galactic Nuclei: from Central Engine to Host Galaxy, Eds. S. Collin, F. Combes and I. Shlosman, ASP Conf. Ser. 290, p. 311 (2003).

11 P. Charlot, D. C. Gabuzda, H. Sol, B. Degrange and F. Piron, Simultaneous VLBI and High-Energy TeV Observations of the Gamma-ray Blazar Mkn 421, in Active Galactic Nuclei: from Central Engine to Host Galaxy, Eds. S. Collin, F. Combes and I. Shlosman, ASP Conf. Ser. 290, p. 329 (2003). D. C. Gabuzda, New VSOP Polarisation Images of BL Lac Objects, in Proc. of the 6th European VLBI Network Symposium, Eds. Ros, Porcas, Lobanov and Zensus (MPIfR, Bonn, Germany) p. 83 (2002). D. C. Gabuzda and I. N. Pashchenko, Evidence for Non-Uniform Parsec-Scale Faraday Rotation in , in Proc. of the 6th European VLBI Network Symposium, Eds. Ros, Porcas, Lobanov and Zensus, MPIfR, Bonn, Germany, p. 87 (2002). I. Agudo, J. L. G omez, D. C. Gabuzda, A. Alberdi, A. P. Marscher and S. G. Jorstad, Multi-frequency VLBI Observations of the BL Lac Object , in Proc. of the 6th European VLBI Network Symposium, Eds. Ros, Porcas, Lobanov and Zensus, MPIfR, Bonn, Germany, p. 115 (2002). S. Frey, L. I. Gurvits, D. C. Gabuzda, C. J. Salter, D. R. Altschuler, et al., Space VLBI Monitoring of AO , in Proc. of the 6th European VLBI Network Symposium, Eds. Ros, Porcas, Lobanov and Zensus, MPIfR, Bonn, Germany, p. 91 (2002). D. C. Gabuzda and A. B. Pushkarev, Evidence for Helical Magnetic Fields in the Jets of BL Lacertae Objects, in Particles and Fields in Radio Galaxies, Eds. R. Laing and K. Blundell, ASP Conf. Ser. 250, p. 180 (2002). A. B. Pushkarev and D. C. Gabuzda, Evidence for Interaction with a Surrounding Medium in Several BL Lacertae Objects, in Particles and Fields in Radio Galaxies, Eds. R. Laing and K. Blundell, ASP Conf. Ser. 250, p. 200 (2002). D. V. Lal, P. Shastri, and D. C. Gabuzda, Parsec-Scale Radio Morphology in Seyfert Galaxies, in Particles and Fields in Radio Galaxies, Eds. R. Laing and K. Blundell, ASP Conf. Ser. 250, p. 191 (2002). D. C. Gabuzda, The VLBI Jets of BL Lac Objects, in AGN in their Cosmic Environment, Eds. B. Rocca-Volmerange and H. Sol, EDPS Conf. Ser. Astron. Astrophys., 1, p. 89 (2001). D. C. Gabuzda and J. L. Gómez, The Compact Magnetic Field Structures of AGN from Space VLBI Polarization Observations, in IAU Symposium 205: Galaxies and Their Constituents at the Highest Angular Resolution, Eds. R. T. Schilizzi, S. N. Vogel, F. Paresce, & M. S. Elvis (San Francisco: ASP), p (2001). A. B. Pushkarev, D. C. Gabuzda, and T. V. Cawthorne, Frequency Dependence of the

12 Parsec-Scale Polarization Structures of BL Lacertae Objects, in IAU Symposium 205: Galaxies and Their Constituents at the Highest Angular Resolution, ed. R. T. Schilizzi, S. N. Vogel, F. Paresce, & M. S. Elvis (San Francisco: ASP), p (2001). D. V. Lal, P. Shastri, and D. C. Gabuzda, Seyfert Galaxies on Milli-arcsecond Scales, Astronomy and Astrophysics Transactions, 20, p. 311 (2001). D. C. Gabuzda, Polarization Measurements in VLBI: Recent Results, in Proceedings of the Fifth EVN Symposium, Eds. J. Conway, A. Polatidis, and R. Booth (Gothenburg: Onsala Space Observatory, Chalmers Technical University, 2000), p D. C. Gabuzda, N. N. Garnich, and A. B. Pushkarev, Global Observations of the Unique BL Lac Object , in Proceedings of the Fifth EVN Symposium, Eds. J. Conway, A. Polatidis, and R. Booth (Gothenburg: Onsala Space Observatory, Chalmers Technical University, 2000), p A. B. Pushkarev and D. C. Gabuzda, Transverse Magnetic Field Structures in BL Lacertae Objects, in Proceedings of the Fifth EVN Symposium, Eds. J. Conway, A. Polatidis, and R. Booth (Gothenburg: Onsala Space Observatory, Chalmers Technical University, 2000), p I. Agudo, J. L. Gómez, D. C. Gabuzda, J. C. Guirado, A. Alberdi, A. P. Marscher, M. A. Aloy, and J. M. Martí, Polarimetric VLBI Observations of , in Proceedings of the Fifth EVN Symposium, Eds. J. Conway, A. Polatidis, and R. Booth (Gothenburg: Onsala Space Observatory, Chalmers Technical University, 2000), p D. C. Gabuzda, Multi-frequency VSOP Polarization Observations of the BL Lacertae Object , in Astrophysical Phenomena Revealed by Space VLBI, (Tokyo: ISAS), p (2000). D. C. Gabuzda, The Magnetic Field Structure of Parsec-Scale Jets: Shocks, Turbulence, and the Surrounding Medium, in Plasma Turbulence and Energetic Particles in Astrophysics (Krakow: Obserwatorium Astronomiczne, Uniwersytet Jagiellonski), p (1999). D. C. Gabuzda, P. Yu. Kochenov, and T. V. Cawthorne, Rapid Polarization Variability in far from the VLBI Core, in The BL Lac Phenomenon, ASP Conf. Ser. 159, (1999). P. Yu. Kochenov and D. C. Gabuzda, New Observations of Intraday Variable Sources, in The BL Lac Phenomenon, ASP Conf. Ser. 159, (1999). A. B. Pushkarev and D. C. Gabuzda, Second Epoch VLBI Observations of Sources from a Complete Sample of BL Lac Objects, in The BL Lac Phenomenon, ASP Conf. Ser.

13 159, (1999). P. Charlot, D. C. Gabuzda, H. Sol, B. Degrange, and E. Pare, VLBI Polarization Observations of Mrk421 Coordinated with TeV Monitoring by CAT, in Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, Eds. J. Paul, T. Montmerle, and E. Aubourg (Saclay: CEA, 1998). D. C. Gabuzda, P. Yu. Kochanev, and R. I. Kollgaard, VLBI Observations of Intraday Variability, in IAU Colloquium 164: Radio Emission from Galactic and Extragalactic Compact Sources, ASP Conf. Ser. 144, p (1998). P. Yu. Kochanev and D. C. Gabuzda, Serendipitious Observations of Intraday Variability in the BL Lac Objects , , and , in IAU Colloquium 164: Radio Emission from Galactic and Extragalactic Compact Sources, ASP Conf. Ser. 144, p (1998). Yu. Yu. Kovalev and D. C. Gabuzda, A Multifrequency VLBI Total Intensity and Polarization Study of the BL Lacertae Object , in IAU Colloquium 164: Radio Emission from Galactic and Extragalactic Compact Sources, ASP Conf. Ser. 144, p (1998). A. B. Pushkarev and D. C. Gabuzda, Polarization VLBI Observations of a Complete Sample of Northern BL Lac Objects, in IAU Colloquium 164: Radio Emission from Galactic and Extragalactic Compact Sources, ASP Conf. Ser. 144, p (1998). W. Alef, E. Preuss, K. I. Kellermann, and D. C. Gabuzda, 3.6 cm/7 mm VLBI Observations of 3C 111, in IAU Colloquium 164: Radio Emission from Galactic and Extragalactic Compact Sources, ASP Conf. Ser. 144, p (1998). J.-F. Lestrade, R. A. Preston, D. L. Jones, A. E. E. Rogers, R. B. Phillips, M. A. Titus, M. Rioja, D. C. Gabuzda, J. C. Guirado, J. E. Reynolds, and D. L. Jauncey, The Final Link of the VLBI and Hipparcos Reference Frames by Phase-Referenced VLBI Observations of 12 Non-thermal Radio-emitting Stars, in IAU Colloquium 164: Radio Emission from Galactic and Extragalactic Compact Sources, ASP Conf. Ser. 144, p (1998). D. C. Gabuzda, The Parsec-Scale Total Intensity and Polarization Structure of Relativistic Jets in AGN, Relativistic Jets in AGNs (Krakow: Poligrafia Inspektoratu Towarzystwa Salezjanskiego), p (1997). D. C. Gabuzda, New Results from VLBI Polarization Observations of BL Lacertae Objects, in IAU Symposium 175: Extragalactic Radio Sources (Boston: Kluwer), p (1996). D. C. Gabuzda, P. Yu. Kochanev, M. L. Sitko, and P. S. Smith, Nearly Simultaneous

14 Optical and VLBI Polarization Observations of BL Lacertae Objects, in IAU Symposium 175: Extragalactic Radio Sources (Boston: Kluwer), p (1996). D. C. Gabuzda, A. B. Pushkarev, and T. V. Cawthorne, 3.6 cm VLBI Total Intensity and Polarization Images of BL Lacertae Objects, in IAU Symposium 175: Extragalactic Radio Sources (Boston: Kluwer), p (1996). D. C. Gabuzda, An Introduction to mm VLBI, in Third McMaster Graduate Student Astronomy Workshop: Observing Techniques at Millimetre and Submillimetre Wavelengths (1994). D. C. Gabuzda, Unexpected Recent Results from VLBI Polarimetry, in Proceedings of Compact Extragalactic Radio Sources, a workshop held in Socorro, New Mexico, February D. C. Gabuzda and M. L. Sitko, Optical and VLBI Polarization Measurements of AGN, in IAU Symposium 159: Multi-wavelength Continuum Emission of AGN, ed. T.J.-L. Courvoisier and A. Blecha (Dordrecht: Kluwer), p (1994). R. I. Kollgaard, E. D. Feigelson, D. C. Gabuzda, R. M. Sambruna, and C. M. Urry, X-Rays and Relativistic Beaming in Radio-Selected BL Lacertae Objects, in Proceedings of the First ROSAT Science Symposium and Data Analysis Workshop, p (1993). D. C. Gabuzda and A. R. Taylor, Space VLBI Polarization Observations, in Proceedings of VLBI Technology: Progress and Future Observational Possibilities, Sasao, T., Manabe, S., Kameya, O., and Inoue, M., eds. (Tokyo: Terra Scientific Pub.) (1993). T. V. Cawthorne, J. F. C. Wardle, D. H. Roberts, and D. C. Gabuzda, The Results of a Study of the Milliarcsecond Linear Polarization Properties of Extragalactic Sources, in Subarcsecond Radio Astronomy, ed. R. J. Davis and R. S. Booth (Cambridge: Cambridge University Press), p (1993). D. C. Gabuzda and T. V. Cawthorne, 3.6cm VLBI Polarization Observations of BL Lacertae Objects, in Subarcsecond Radio Astronomy, ed. R. J. Davis and R. S. Booth (Cambridge: Cambridge University Press), p (1993). D. C. Gabuzda and R. I. Kollgaard, Is the BL Lacertae Object a Microlensed Quasar?, in Subarcsecond Radio Astronomy, ed. R. J. Davis and R. S. Booth (Cambridge: Cambridge University Press), p (1993). J.-F. Lestrade, R. B. Phillips, D. L. Jones, R. A. Preston, and D. C. Gabuzda, High- Precision VLBI Trigonometric Parallaxes of Three Radio-Emitting Stars, in Subarcsecond Radio Astronomy, ed. R. J. Davis and R. S. Booth (Cambridge: Cambridge University Press), p (1993).

15 P. A. Hughes, M. F. Aller, H. D. Aller, and D. C. Gabuzda, The Difference Between BL Lacs and QSOs, in Proceedings of The Nature of Compact Objects in AGN, a conference held at Cambridge University, July D. C. Gabuzda, A Polarimetric Perspective on BL Lacertae Objects, in Extragalactic Radio Sources - From Beams to Jets, ed. J. Roland, H. Sol, and G. Pelletier (Cambridge: Cambridge University Press), p (1992). D. C. Gabuzda and T. V. Cawthorne, Milliarcsecond Polarization Structure and the Classification of Blazars, in Variability of Blazars, ed. E. Valtaoja and M. Valtonen (Cambridge: Cambridge University Press), p (1992). J.-F. Lestrade, R. A. Preston, D. C. Gabuzda, and R. B. Phillips, VLBI Astrometry and the HIPPARCOS Link to the Extragalactic Reference Frame, proceedings of XXVIII COSPAR Symposium S.7, Advances in Space Research, 11 (2), (1991). J.-F. Lestrade, R. A. Preston, D. C. Gabuzda, and R. B. Phillips, VLBI Astrometry of the HIPPARCOS Radio Stars, in Reference Frames (IAU Colloquium 127), ed. J. Hughes, C. Smith, and G. Kaplan, p. 252 (1990). D. H. Roberts, J. F. C. Wardle, L. F. Brown, D. C. Gabuzda, and T. V. Cawthorne, Parsec Scale Linear Polarization Properties of Quasars, Galaxies, and BL Lacertae Objects, in Parsec-Scale Radio Jets, ed. J. A. Zensus and T. J. Pearson (Cambridge: Cambridge U. Press), p (1990). J. F. C. Wardle, D. H. Roberts, L. F. Brown, R. I. Kollgaard, and D. C. Gabuzda, Linear Polarization of 3C273 on Parsec Scales, in Parsec-Scale Radio Jets, ed. J. A. Zensus and T. J. Pearson (Cambridge: Cambridge U. Press), (1990). D. C. Gabuzda, T. V. Cawthorne, D. H. Roberts, and J. F. C. Wardle, VLBI Polarization Properties of BL Lacertae Objects, in BL Lac Objects, ed. L. Maraschi, T. Maccacaro, and M.-H. Ulrich (New York: Springer-Verlag), p (1989). D. H. Roberts, D. C. Gabuzda, and J. F. C. Wardle, Evolution of the Milliarcsecond Polarization Structure of the BL Lacertae Object OJ287, in IAU Symposium No. 129: The Impact of VLBI on Astrophysics and Geophysics, ed. J. M. Moran et al., (Dordrecht: Reidel), p (1988). J. F. C. Wardle, D. H. Roberts, L. F. Brown, and D. C. Gabuzda, Evolution of the Milliarcsecond Polarization Structure of the Superluminal Quasar 3C345, in IAU Symposium No. 129: The Impact of VLBI on Astrophysics and Geophysics, ed. J. M. Moran et al., (Dordrecht: Reidel), p (1988). D. C. Gabuzda, D. H. Roberts, J. F. C. Wardle, and L. F. Brown, Milliarcsecond Polar-

16 ization Properties of Several BL Lacertae Objects, in IAU symposium 129: The Impact of VLBI on Astrophysics and Geophysics, ed. J. M. Moran et al., (Dordrecht: Reidel), p (1988). D. C. Gabuzda, Period and Amplitude of V1670 Sagitarii, Journal of the American Association of Variable Star Observers, 10, 64 (1981).