Observational programs at Istituto Ricerche Solari Locarno (IRSOL)
|
|
- Jared Matthews
- 5 years ago
- Views:
Transcription
1 Observational programs at Istituto Ricerche Solari Locarno (IRSOL) Renzo Ramelli and IRSOL collaborators IRSOL Locarno, Switzerland Suzhou, China 24th July 2009
2 Scientific Collaborators affiliated to IRSOL Dr. Michele Bianda Prof. Jan O. Stenflo (ETHZ/IRSOL) Dr. Renzo Ramelli Dr. Daniel Gisler (IRSOL/ETHZ) Lucia Kleint (PhD student) (IRSOL/ETHZ) + Collaborations with people from other institutes worldwide
3 IRSOL Germany France Zurich Switzerland Austria Italy IRSOL = Istituto Ricerche Solari Locarno Observatory specialized in polarimetry
4 Outline Introduction: Scientific interest of polarimetry Instrumentation (Overview) Summary of observational programs Future goals
5 Polarimetry Polarimetry allows to get information about the magnetic fields Zeeman effect: Polarization signals up to serveral tens of % Zeeman effect allows to extract the tridimensional information of strong oriented magnetic fields.
6 Scattering polarization and the Hanle effect The improvement in the polarimetric accuracy (at 10-4 level or better) opened a new window in the observation of scattering polarization (mainly) near the limb Scattering polarization profiles in spectral lines are also sensitive to weak and mixed-polarity magnetic fields through the Hanle Effect (which mainly manifests itself as depolarization and ev. a rotation of plane of polarization) Powerful tool to get information about weak and (unresolved) mixed polarity magnetic fields (to which Zeeman effect is blind)
7 First two volumes of Gandorfer s Atlas obtained at IRSOL (2000, 2002) Second solar spectrum
8 The IRSOL instrumentation Telescope Telescope: Gregory - Coudé, evacuated Diameter of primary mirror: 45 cm Total focal length: 25 m Spectrograph: focal length: 10 m grating 18 cm 36 cm 316 lines / mm blaze 63 Fabry Perot filter system: Bandwidth ~ 30 ma Novel configuration with FP+spectrograph Adaptive optics: Tip-tilt DM with 37 actuators ZIMPOL polarimeter (see next slides)
9 ZIMPOL polarimeter ZIMPOL-polarimeter (Zurich Imaging Polarimeter, previously developed at ETH- Zurich and now at SUPSI Lugano) allows precise full Stokes measurements free from seeing induced spurious effects (modulation 42 khz / 1kHz). Polarimetric accuracy depends primarily on photon statistics level can be reached with long enough exposure time. ZIMPOL - setup
10 ZIMPOL3 New generation camera system which is being implemented for observations at IRSOL
11 ZIMPOL3 Improvements with respect to ZIMPOL2: more flexible and compact system adaptable to different cips new cips for UV with microlenses more efficient and faster exposure and readout simultaneously based on newer technology (replace components available on the market) more functions (readout modes, binning, subframe readout, different demodulation schemes, electronic compensation of telescope pol. offset) night astronomy application possible: longer integration time, better cooling
12 Advantages of GCT at IRSOL + ZIMPOL Very good polarimetric and spectral accuracy Large amount of observing time available: Flexibility, fast reaction to particular solar events Good for synoptic type programs or for projects requiring long observation time Good for testing and development of new instrumentation to be used also in dedicated campaigns at larger observatories (Thémis, Gregor,...) Measurements down to the near UV (ca. 380 nm) Instrumental polarization is small and almost constant over one day of observations (easy to correct depends on declination only)
13 Examples of scientific results obtained at IRSOL Hanle effect measured in the quiet chromosphere (Bianda et al., 1998) 2 Volumes of Second Solar Spectrum Atlas (Gandorfer, 2000/2002) Determination of novel constraints on impact polarization in solar flares (Bianda et al., 2005) Discovery of vast amount of hidden magnetism in the solar photosphere (Trujillo Bueno et al.- Stenflo, Nature 2004); Measurements of polarization in molecular lines (e.g. Afram et al. 2007; Berdyugina et al ; Asensio Ramos et al. 2004) Measurements of full Stokes profiles in prominences in Hα, He-D3 and Hβ (Ramelli et al., 2005) He-D3 full Stokes spectropolarimetric measurements in spicules (Ramelli et al., 2005) BaII D2 line observations to verify the theoretical predictions of Belluzzi et al. (Ramelli et al., 2007) Study of the origin of spatial variations of scattering polarization in the wings of the Ca I 4227 A line (Sampoorna et al., 2009)...
14 Examples of on-going projects: Inversion of prominence profiles with Hazel code preliminary (Ramelli et al.) (Hazel code: Asensio Ramos, Trujllo Bueno and Landi degl Innocenti, ApJ, 2008)
15 Examples of on-going projects: Inversion of prominence profiles with Hazel code preliminary (Ramelli et al.) (Hazel code: Asensio Ramos, Trujllo Bueno and Landi degl Innocenti, ApJ, 2008)
16 Examples of on-going projects: Inversion of profiles of spicules with HaZel code preliminary (Ramelli et al.) (Hazel code: Asensio Ramos, Trujllo Bueno and Landi degl Innocenti, ApJ, 2008)
17 Examples of on-going projects: Inversion of profiles of spicules with Hazel code preliminary (Ramelli et al.) (Hazel code: Asensio Ramos, Trujllo Bueno and Landi degl Innocenti, ApJ, 2008)
18 Examples of on-going projects: Synoptic program (Kleint et al.) Monthly observations at different N - Position angles (N, NW, W, SW, S) - wavelengths (5141 A, 5206 A, 4383 A) Slit parallel to the limb, at µ=0.1 (5 from limb) S
19 Synoptic program: profile modeling at 5141 (Kleint et al.) Calculate amplitude ratios R1 / R2 R3 / R2 R2 / P
20 mall all e re is => =>! Synoptic program: Variation with position angle? ve ve far far r No dependence from position angles e R R Measurements from 12/2007 until 2009 (Kleint et al.)
21 Main goals: Future research at IRSOL Different observing programs on solar magnetism and polarimetry Synoptic type programs (eg. Variations of the Hanle-effect signatures with respect to heliographic latitude and solar cycle phase) Development of novel instrumentation Collaboration with observatories with larger telescopes (Gregor, Thémis, EAST,...)
22 Thanks for your attention!
Absolute calibration in solar scattering polarization measurements with ZIMPOL
Absolute calibration in solar scattering polarization measurements with ZIMPOL Michele Bianda 1, Renzo Ramelli 1, Daniel Gisler 1,4, Jan Stenflo 1,2, Ivan Defilippis 3 1) IRSOL, Istituto Ricerche Solari
More informationVector Magnetic Field Diagnostics using Hanle Effect
Meeting on Science with Planned and Upcoming Solar Facilities in the Country, Bangalore, India, November 2-3, 2011 Vector Magnetic Field Diagnostics using Hanle Effect M. Sampoorna Indian Institute of
More informationUV spectro-polarimetry with CLASP & CLASP2 sounding rocket experiments
UV spectro-polarimetry with CLASP & CLASP2 sounding rocket experiments R. Ishikawa (1), R. Kano (1), A. Winebarger (2), D. E. McKenzie (2), F. Auchere (3), J. Trujillo Bueno (4), N. Narukage (1), K. Kobayashi
More informationarxiv: v1 [astro-ph.sr] 1 Sep 2014
**Volume Title** ASP Conference Series, Vol. **Volume Number** **Author** c **Copyright Year** Astronomical Society of the Pacific The role of quantum interference and partial redistribution in the solar
More informationScattering polarization in strong chromospheric lines ABSTRACT
A&A 472, 919 928 (2007) DOI: 10.1051/0004-6361:20077627 c ESO 2007 Astronomy & Astrophysics Scattering polarization in strong chromospheric lines III. Spatial fluctuations of the polarized Ca ii K line
More informationASTRONOMY AND ASTROPHYSICS. Center-to-limb variation of the enigmatic Na I D 1 and D 2 polarization profiles
Astron. Astrophys. 355, 781 788 (2000) Center-to-limb variation of the enigmatic Na I D 1 and D 2 polarization profiles ASTRONOMY AND ASTROPHYSICS J.O. Stenflo 1, A. Gandorfer 1, and C.U. Keller 2 1 Institute
More informationFirst observations of the second solar spectrum with spatial resolution at the Lunette Jean Rösch
First observations of the second solar spectrum with spatial resolution at the Lunette Jean Rösch Malherbe, J.-M., Moity, J., Arnaud, J., Roudier, Th., July 2006 The experiment setup in spectroscopic mode
More informationVisible Spectro-Polarimeter (ViSP) Instrument Science Requirement
Project Documentation Document SPEC-0055 Revision D Visible Spectro-Polarimeter (ViSP) Instrument Science Requirement D. Elmore 1, H. Socas-Navarro, R. Casini 3 June 2014 Released By: Name Joseph McMullin
More informationFirst observations of the second solar spectrum with spatial resolution at the Lunette Jean Rösch ABSTRACT
A&A 462, 753 762 (2007) DOI: 10.1051/0004-6361:20065910 c ESO 2007 Astronomy & Astrophysics First observations of the second solar spectrum with spatial resolution at the Lunette Jean Rösch J.-M. Malherbe
More informationAstronomy. Astrophysics. Horizontal or vertical magnetic fields on the quiet Sun. Angular distributions and their height variations. J. O.
DOI: 10.1051/0004-6361/201321608 c ESO 2013 Astronomy & Astrophysics Horizontal or vertical magnetic fields on the quiet Sun Angular distributions and their height variations J. O. Stenflo 1,2 1 Institute
More informationpre Proposal in response to the 2010 call for a medium-size mission opportunity in ESA s science programme for a launch in 2022.
Solar magnetism explorer (SolmeX) Exploring the magnetic field in the upper atmosphere of our closest star preprint at arxiv 1108.5304 (Exp.Astron.) or search for solmex in ADS Hardi Peter & SolmeX team
More informationFirst observations of the second solar spectrum with spatial resolution at the Lunette Jean Rösch
Astronomy & Astrophysics manuscript no. 5910 c ESO 2010 June 15, 2010 First observations of the second solar spectrum with spatial resolution at the Lunette Jean Rösch J.-M. Malherbe 1, J. Moity 1, J.
More informationarxiv: v1 [astro-ph] 23 Dec 2008
Solar Polarization 5 ASP Conference Series, Vol. in press, 2009. (Invited Review) Editors: S. Berdyugina, K. N. Nagendra & R. Ramelli The Magnetic Sensitivity of the Second Solar Spectrum arxiv:0812.4400v1
More informationMagnetohydrodynamic Simulations at IRSOL
1st Swiss SCOSTEP workshop, Oct. 4 5, 2016 Oeschger Centre, Bern Magnetohydrodynamic Simulations at IRSOL Oskar Steiner Istituto Ricerche Solari Locarno (IRSOL), Locarno-Monti, Switzerland Kiepenheuer-Institut
More informationMcMath-Pierce Adaptive Optics Overview. Christoph Keller National Solar Observatory, Tucson
McMath-Pierce Adaptive Optics Overview Christoph Keller National Solar Observatory, Tucson Small-Scale Structures on the Sun 1 arcsec Important astrophysical scales (pressure scale height in photosphere,
More informationOn the 3D structure of the magnetic eld in regions of emerging ux
Mem. S.A.It. Vol. 81, 625 c SAIt 2010 Memorie della On the 3D structure of the magnetic eld in regions of emerging ux A. Asensio Ramos 1,2 and J. Trujillo Bueno 1,2,3 1 Instituto de Astrofísica de Canarias,
More informationSpectro polarimetry with liquid crystals
Mem. S.A.It. Vol. 78, 203 c SAIt 2007 Memorie della Spectro polarimetry with liquid crystals J.-M. Malherbe 1, Th. Roudier 2, J. Moity 1, P. Mein 1, J. Arnaud 3, and R. Muller 2 1 Observatoire de Paris,
More informationarxiv: v1 [astro-ph.sr] 13 Jan 2010
Mem. S.A.It. Vol. 75, 282 c SAIt 2008 Memorie della Onthe3DStructureoftheMagneticFieldin Regions of Emerging Flux arxiv:1001.2108v1 [astro-ph.sr] 13 Jan 2010 A. Asensio Ramos 1,2 and J. Trujillo Bueno
More informationSolar Polarization Workshop 8. Firenze, September, Program
Solar Polarization Workshop 8 Firenze, 12 16 September, 2016 Program MONDAY, September 12 8:00 9:00 Registration 9:00 9:15 Welcome ------------------------------------------ SESSION 1 PHYSICS OF POLARIZATION
More informationAnomalous polarization effects due to coherent scattering on the Sun
Astron. Astrophys. 355, 789 803 (000) ASTRONOMY AND ASTROPHYSICS Anomalous polarization effects due to coherent scattering on the Sun J.O. Stenflo 1, C.U. Keller, and A. Gandorfer 1 1 Institute of Astronomy,
More informationZeeman Paschen-Back effects
Zeeman Paschen-Back effects ZE: Weak Bfield Magnetic splitting level separation Splitting linear with B Equal total strength of σ b, π, σ r components (Anti-)symmetric Zero net polarization (Incomplete)
More informationarxiv: v1 [astro-ph] 4 Nov 2008
Polarimetric Diagnostics of Unresolved Chromospheric Magnetic Fields R. Casini, a R. Manso Sainz, b B. C. Low a arxiv:0811.0512v1 [astro-ph] 4 Nov 2008 a High Altitude Observatory, National Center for
More informationFaurobert decay of the atom then leads to linear polarization of the re-emitted radiation eld. This so-called scattering polarization is analoguous to
The Last Total Solar Eclipse of the Millennium in Turkey ASP Conference Series, Vol. 3 10 8, 1999 W. C. Livingston, and A. Ozguc, eds. Hanle eect of weak solar magnetic elds M. Faurobert Observatoire de
More informationSolar Magnetic Fields J.O. Stenflo Institute of Astronomy, ETH Zurich, CH-8092 Zurich, Switzerland
J. Astrophys. Astr. (0000) 00, 000 000 Solar Magnetic Fields J.O. Stenflo Institute of Astronomy, ETH Zurich, CH-8092 Zurich, Switzerland 2007 July 5 Abstract. Since the structuring and variability of
More informationMolecular line scattering and magnetic field effects: Resolution of an enigma
A&A 388, 1062 1078 (2002) DOI: 10.1051/0004-6361:20020587 c ESO 2002 Astronomy & Astrophysics Molecular line scattering and magnetic field effects: Resolution of an enigma S. V. Berdyugina 1,J.O.Stenflo
More informationMeasuring the Hidden Aspects of Solar Magnetism arxiv: v1 [astro-ph.sr] 28 Mar 2009
To appear in Magnetic Coupling between the Interior and the Atmosphere of the Sun, eds. S. S. Hasan and R. J. Rutten, Astrophysics and Space Science Proceedings, Springer-Verlag, Heidelberg, Berlin, 2009.
More informationMulti-Application Solar Telescope Preliminary results
Preliminary results Shibu K. Mathew Udaipur Solar Observatory Past Present Future Telescope specs. and components Installation Optical alignment and tests Back-end instruments Preliminary observations
More informationTHE SCIENTIFIC CASE FOR SPECTROPOLARIMETRY FROM SPACE: A NOVEL DIAGNOSTIC WINDOW ON COSMIC MAGNETIC FIELDS
1 THE SCIENTIFIC CASE FOR SPECTROPOLARIMETRY FROM SPACE: A NOVEL DIAGNOSTIC WINDOW ON COSMIC MAGNETIC FIELDS J. Trujillo Bueno 1,2, E. Landi Degl Innocenti 3, R. Casini 4 and V. Martínez Pillet 1 1 Instituto
More informationarxiv:astro-ph/ v1 26 Sep 2003
DRAFT VERSION FEBRUARY 17, 2011 Preprint typeset using L A TEX style emulateapj v. 11/12/01 arxiv:astro-ph/0309727v1 26 Sep 2003 SIMULTANEOUS VISIBLE AND INFRARED SPECTRO-POLARIMETRY OF A SOLAR INTERNETWORK
More informationIntroduction to Daytime Astronomical Polarimetry
Introduction to Daytime Astronomical Polarimetry Sami K. Solanki Max Planck Institute for Solar System Research Introduction to Solar Polarimetry Sami K. Solanki Max Planck Institute for Solar System Research
More informationNew insights from. observation. Hinode-VTT He Andreas Lagg (MPS) Saku Tsuneta (NAOJ) Ryohko Ishikawa (NAOJ/Univ. Tokyo)
New insights from Hinode-VTT He10830 observation Ryohko Ishikawa (NAOJ/Univ. Tokyo) Saku Tsuneta (NAOJ) Andreas Lagg (MPS) Hinode-VTT joint campaign (HOP71) (2008/04/29-2008/05/12) Purpose: Finding chromospheric
More informationMeasuring the Magnetic Vector with the Hei Å Line: A Rich New World
Solar Polarization 4 ASP Conference Series, Vol. 358, 2006 R. Casini and B. W. Lites Measuring the Magnetic Vector with the Hei 10830 Å Line: A Rich New World S. K. Solanki, 1 A. Lagg, 1 R. Aznar Cuadrado,
More informationInternetwork Horizontal Magnetic Fields in the Quiet Sun Chromosphere: Results from a Joint Hinode/VTT Study
THE SECOND HINODE SCIENCE MEETING ASP Conference Series, Vol. 415, c 2009 B. Lites, M. Cheung, T. Magara, J. Mariska, and K. Reeves Internetwork Horizontal Magnetic Fields in the Quiet Sun Chromosphere:
More informationDifferential Hanle effect and the spatial variation of turbulent magnetic fields on the Sun
Astron. Astrophys. 329, 319 328 (1998) ASTRONOMY AND ASTROPHYSICS Differential Hanle effect and the spatial variation of turbulent magnetic fields on the Sun J.O. Stenflo 1, C.U. Keller 2, and A. Gandorfer
More informationNear-IR internetwork spectro-polarimetry at different heliocentric angles ABSTRACT
A&A 479, 229 234 (2008) DOI: 10.1051/0004-6361:20078500 c ESO 2008 Astronomy & Astrophysics Near-IR internetwork spectro-polarimetry at different heliocentric angles M. J. Martínez González 1, A. Asensio
More informationMagnetic Fields in the Atmospheres of the Sun and Stars
Saas Fee 39 Magnetic Fields in the Atmospheres of the Sun and Stars Sami K. Solanki Max Planck Institute for Solar System Research Before starting... Concentrate on observations: only few equations Will
More informationSolar Magnetic Fields Jun 07 UA/NSO Summer School 1
Solar Magnetic Fields 2 12 Jun 07 UA/NSO Summer School 1 Solar Magnetic Fields 2 (12 June) An introduction to the instruments and techniques used to remotely measure the solar magnetic field Stokes Vectors
More informationLecture 6: Polarimetry 2. Polarizers and Retarders. Polarimeters. Scattering Polarization. Zeeman Effect. Hanle Effect. Outline
Lecture 6: Polarimetry 2 Outline 1 Polarizers and Retarders 2 Polarimeters 3 Scattering Polarization 4 Zeeman Effect 5 Hanle Effect Christoph U. Keller, Utrecht University, C.U.Keller@uu.nl Solar Physics,
More informationAUTOMATIC GUIDING OF THE PRIMARY IMAGE OF SOLAR GREGORY TELESCOPES. 1. Introduction
AUTOMATIC GUIDING OF THE PRIMARY IMAGE OF SOLAR GREGORY TELESCOPES G. KÜVELER 1,E.WIEHR 2, D. THOMAS 1,M.HARZER 1, M. BIANDA 3, A. EPPLE 4, P. SÜTTERLIN 2 and E. WEISSHAAR 5 1 Fachhochschule Wiesbaden,
More informationMeasuring magnetic free energy in the solar atmosphere
Measuring magnetic free energy in the solar atmosphere Philip G Judge, High Altitude Observatory, National Center for Atmospheric Research. judge@ucar.edu Abstract: The purpose of this white paper is to
More informationOn the nature of Ellermanbombs and microflaresas observed with the 1.5m GREGOR telescope
On the nature of Ellermanbombs and microflaresas observed with the 1.5m GREGOR telescope C. Kuckein 1, N. Bello González 2, C. Denker 1, P. Gömöry 3, H. Strecker 2, R. Schlichenmaier 2 and the GFPI 1 &
More informationAstronomy. Astrophysics
A&A 566, A6 () DOI:.5/-66/9 c ESO Astronomy & Astrophysics The magnetic field configuration of a solar prominence inferred from spectropolarimetric observations in the He i 8 Å triplet D. Orozco Suárez,,
More informationA down-to-earth guide to high-resolution solar observations. Kevin Reardon National Solar Observatory
A down-to-earth guide to high-resolution solar observations Kevin Reardon kreardon@nso.edu National Solar Observatory Seeing Adaptive Optics Image Reconstruction Atmospheric Effects Spectral Lines Calibration
More informationThe Solar Chromosphere
The Solar Chromosphere Han Uitenbroek National Solar Observatory/Sacramento Peak Sunspot NM, USA IUGG, Session GAiv.01, Sapporo, Japan, 2003 July 1 Summary The chromosphere as part of the transition between
More informationVenus 2012 transit: spectroscopy and high resolution observations proposals
IAP workshop France/Japan - March, 6th 2012 Venus 2012 transit: spectroscopy and high resolution observations proposals by Cyril Bazin, Serge Koutchmy et al. Institut d Astrophysique de Paris UMR 7095
More informationM. J. Martínez González, M. Collados, and B. Ruiz Cobo ABSTRACT
A&A 456, 1159 1164 (2006) DOI: 10.1051/0004-6361:20065008 c ESO 2006 Astronomy & Astrophysics On the validity of the 630 nm Fe I lines for magnetometry of the internetwork quiet Sun M. J. Martínez González,
More informationarxiv: v1 [astro-ph.sr] 17 Dec 2014
Preprint typeset using L A TEX style emulateapj v. // CHROMOSPHERIC DIAGNOSIS WITH CA II LINES: FORWARD MODELING IN FORWARD SCATTERING (I). E.S. Carlin, A. Asensio Ramos, arxiv:.86v [astro-ph.sr] 7 Dec
More informationAstronomy. Astrophysics. Basal magnetic flux and the local solar dynamo. J. O. Stenflo 1,2. 1. Introduction
A&A 547, A93 (2012) DOI: 10.1051/0004-6361/201219833 c ESO 2012 Astronomy & Astrophysics Basal magnetic flux and the local solar dynamo J. O. Stenflo 1,2 1 Institute of Astronomy, ETH Zurich, 8093 Zurich,
More informationList of contributions
Solar Polarization Workshop 8 Firenze, 12 16 September, 2016 List of contributions Session 1: Physics of polarization 1. Casini, Roberto Egidio Landi: a life in the science and teaching of polarimetry
More informationEXPERIMENTAL TESTING OF SCATTERING POLARIZATION MODELS
EXPERIMENTAL TESTING OF SCATTERING POLARIZATION MODELS W. Li 1,, R. Casini 1, S. Tomczyk 1, E. Landi Degl Innocenti 2,, and B. Marsell 3 1 High Altitude Observatory, National Center for Atmospheric Research,
More informationPolarization Measurements at the Daniel K. Inouye Solar Telescope (formerly ATST) Valentin Martinez Pillet David Elmore
Polarization Measurements at the Daniel K. Inouye Solar Telescope (formerly ATST) Valentin Martinez Pillet David Elmore Summary Inouye Solar Telescope will observationally test models with spatial resolution
More informationImaging polarimetry of exo-planets with the VLT and the E-ELT Hans Martin SCHMID, ETH Zurich
Imaging polarimetry of exo-planets with the VLT and the E-ELT Hans Martin SCHMID, ETH Zurich Collaborators: ETH Zurich: E. Buenzli, F. Joos, C. Thalmann (now at MPIA) VLT SPHERE: J.L. Beuzit, D. Mouillet,
More informationThe Solar Chromosphere
1 / 29 The Solar Chromosphere Recent Advances in Determining the Magnetic Fine Structure Andreas Lagg Max-Planck-Institut für Sonnensystemforschung Katlenburg-Lindau, Germany Rocks n Stars 2012 2 / 29
More informationResults from Chromospheric Magnetic Field Measurements
Results from Chromospheric Magnetic Field Measurements Andreas Lagg Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau Outline: The average chromosphere Magnetic structures canopy spicules
More informationNear Infrared Spectro-Polarimeter Use Case
Project Documentation RPT-0036 Revision A Near Infrared Spectro-Polarimeter Use Case S. Gibson, L. Fletcher, R. Hubbard, S. Keil, J. Kuhn, H. Lin, M. Penn Science Working Group May 2008 Approved for use:
More informationarxiv:astro-ph/ v1 22 Dec 2006
Solar Polarization 4 ASP Conference Series, Vol. 358, pages 269 292, 2006 Edited by R. Casini and B. W. Lites The Hanle Effect in Atomic and Molecular Lines: A New Look at the Sun s Hidden Magnetism arxiv:astro-ph/0612678v1
More informationSeptember 16, Wednesday 5. Tools for Solar Observations-III
September 16, Wednesday 5. Tools for Solar Observations-III Zeeman effect. Magnetic fields and polarimetry. Zeeman effect (observation) Fe 5250.2A (525nm) A complex sunspot picture, taken at 15:30 hours
More informationA Large Coronagraph for Solar Coronal Magnetic Field Measurements
A Large Coronagraph for Solar Coronal Magnetic Field Measurements Steven Tomczyk HAO, NCAR High Altitude Observatory (HAO) National Center for Atmospheric Research (NCAR) The National Center for Atmospheric
More informationASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES SOLAR POLARIZATION 4
ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES Volume 358 SOLAR POLARIZATION 4 Proceedings of a meeting held in Boulder, Colorado, USA 19-23-September2005 Edited by R. Casini High Altitude Observatory,
More informationarxiv: v1 [astro-ph.sr] 31 Mar 2014
Astronomy & Astrophysics manuscript no. orozco accepted version c ESO April, The magnetic field configuration of a solar prominence inferred from spectropolarimetric observations in the He i 8 Å triplet
More informationarxiv: v2 [astro-ph.sr] 4 Nov 2015
my journal manuscript No. (will be inserted by the editor) Measurements of Photospheric and Chromospheric Magnetic Fields Andreas Lagg Bruce Lites Jack Harvey Sanjay Gosain Rebecca Centeno arxiv:1510.06865v2
More informationPolarimetry Techniques. K. Sankarasubramanian ISRO Satellite Centre Bangalore India
Polarimetry Techniques K. Sankarasubramanian ISRO Satellite Centre Bangalore sankark@isac.gov.in Outline Introduction Why Polarimetry? Requirements Polarization Basics Stokes Parameters & Mueller Matrices
More informationThe Sun s Dynamic Atmosphere
Lecture 16 The Sun s Dynamic Atmosphere Jiong Qiu, MSU Physics Department Guiding Questions 1. What is the temperature and density structure of the Sun s atmosphere? Does the atmosphere cool off farther
More informationAn eclipse experiment to study the solar chromosphere and spicules
An eclipse experiment to study the solar chromosphere and spicules Draft 1.2, P. G. Judge, 30 Dec 2010. An experiment is proposed to measure a critical part of the chromospheric flash spectrum during the
More informationHale Collage. Spectropolarimetric Diagnostic Techniques!!!!!!!! Rebecca Centeno
Hale Collage Spectropolarimetric Diagnostic Techniques!!!!!!!! Rebecca Centeno March 1-8, 2016 Degree of polarization The degree of polarization is defined as: p = Q2 + U 2 + V 2 I 2 In a purely absorptive
More informationCryogenic Near-IR Spectro-Polarimeter (Cryo-NIRSP) Instrument Science Requirement Document
Project Documentation Document SPEC-0056 Revision D Cryogenic Near-IR Spectro-Polarimeter (Cryo-NIRSP) Instrument Science Requirement Document M. Penn, J. Kuhn, D. Elmore * Instrument Group 28 July 2010
More informationSolar Observations with Gregor
Solar Observations with Gregor Oskar von der Lühe and the Gregor Team Kiepenheuer-Institut für Sonnenphysik, Freiburg Astrophysikalisches Institut Potsdam Max-Planck-Institut für Sonnensystemforschung,
More informationProposed National Large Solar Telescope. Jagdev Singh Indian Institute of Astrophysics, Bangalore , India.
J. Astrophys. Astr. (2008) 29, 345 351 Proposed National Large Solar Telescope Jagdev Singh Indian Institute of Astrophysics, Bangalore 560 034, India. e-mail: jsingh@iiap.res.in Abstract. Sun s atmosphere
More informationSolar Optical Telescope onboard HINODE for Diagnosing the Solar Magnetic Fields
Solar Optical Telescope onboard HINODE for Diagnosing the Solar Magnetic Fields Kiyoshi Ichimoto 1) and HINODE/SOT-team 1) Solar-B Project Office National Astronomical Observatory /NINS 16 th International
More informationlinear polarization: the electric field is oriented in a single direction circular polarization: the electric field vector rotates
Chapter 8 Polarimetry 8.1 Description of polarized radiation The polarization of electromagnetic radiation is described by the orientation of the wave s electric field vector. There are two different cases
More informationLecture 4: Polarimetry 2. Scattering Polarization. Zeeman Effect. Hanle Effect. Outline
Lecture 4: Polarimetry 2 Outline 1 Scattering Polarization 2 Zeeman Effect 3 Hanle Effect Scattering Polarization Single Particle Scattering light is absorbed and re-emitted if light has low enough energy,
More informationarxiv: v1 [astro-ph.sr] 19 Sep 2011
arxiv:1109.4051v1 [astro-ph.sr] 19 Sep 2011 ISSN 1845 8319 OSCILLATIONS OF PROMINENCES OBSERVED BY MSDP AND HSFA TELESCOPES M. ZAPIÓR 1 and P. KOTRČ 2 1 Astronomical Institute, University of Wrocław Kopernika
More informationTHE SPHERE VIEW OF BETELGEUSE
Title : will be set by the publisher Editors : will be set by the publisher EAS Publications Series, Vol.?, 2013 THE SPHERE VIEW OF BETELGEUSE O. Chesneau 1, H.-M. Schmid 2, M. Carbillet 3, A. Chiavassa
More informationSoftware for Interactively Visualizing Solar Vector Magnetograms of Udaipur Solar Observatory
J. Astrophys. Astr. (2008) 29, 107 111 Software for Interactively Visualizing Solar Vector Magnetograms of Udaipur Solar Observatory Sanjay Gosain, Sanjiv Tiwari, Jayant Joshi & P. Venkatakrishnan Udaipur
More informationHanle Echelle Spectrograph (HESP)
Hanle Echelle Spectrograph (HESP) Bench mounted High resolution echelle spectrograph fed by Optical Fiber Second generation instrument for HCT The project is a technical collaboration between Indian Institute
More informationNational Solar Observatory Tucson, Arizona
323 National Solar Observatory Tucson, Arizona 85719-4933 This report summarizes scientific, operational, and programmatic activities at the National Solar Observatory NSO for the period 01 October 2001
More informationMulti-line Spectropolarimetry at THÉMIS
Advanced Solar Polarimetry Theory, Observation, and Instrumentation ASP Conference Series, Vol. 236, 2001 Michael Sigwarth (ed.) Multi-line Spectropolarimetry at THÉMIS Frédéric PALETOU Observatoire de
More informationSolar observations carried out at the INAF - Catania Astrophysical Observatory
Contrib. Astron. Obs. Skalnaté Pleso 41, 85 91, (2011) Solar observations carried out at the INAF - Catania Astrophysical Observatory F. Zuccarello 1,2, L. Contarino 1 and P. Romano 2 1 Department of Physics
More informationChapter 8 The Sun Our Star
Note that the following lectures include animations and PowerPoint effects such as fly ins and transitions that require you to be in PowerPoint's Slide Show mode (presentation mode). Chapter 8 The Sun
More informationINFERENCE OF CHROMOSPHERIC MAGNETIC FIELDS IN A SUNSPOT DERIVED FROM SPECTROPOLARIMETRY OF Ca II 8542 A
Al-Azhar Bull. Sci. INFERENCE OF CHROMOSPHERIC MAGNETIC FIELDS IN A SUNSPOT DERIVED FROM SPECTROPOLARIMETRY OF Ca II 8542 A Ali G. A. Abdelkawy 1, Abdelrazek M. K. Shaltout 1, M. M. Beheary 1, T. A. Schad
More informationStandard Stars for Linear Polarization Observed with FORS1
THE FUTURE OF PHOTOMETRIC, SPECTROPHOTOMETRIC AND POLARIMETRIC STANDARDIZATION ASP Conference Series, Vol. 364, 27 C. Sterken Standard Stars for Linear Polarization Observed with FORS1 L. Fossati, 1,2
More informationSolar-B. Report from Kyoto 8-11 Nov Meeting organized by K. Shibata Kwasan and Hida Observatories of Kyoto University
Solar-B Report from Kyoto 8-11 Nov Meeting organized by K. Shibata Kwasan and Hida Observatories of Kyoto University The mission overview Japanese mission as a follow-on to Yohkoh. Collaboration with USA
More informationMagnetic structuring at spatially unresolved scales. Jan Stenflo ETH Zurich and IRSOL, Locarno
Magnetic structuring at spatially unresolved scales Jan Stenflo ETH Zurich and IRSOL, Locarno Magnetograms of the active and quiet Sun Question: What would the field look like with infinite resolution
More informationStokes polarimetry of the Zeeman and Hanle effects
33 Stokes polarimetry of the Zeeman and Hanle effects Jan O. Stenflo I Abstract Magnetic fields are responsible for almost all variability in the Universe on intermediate time scales. The information on
More informationOBSERVATIONS OF SUNSPOT UMBRAL OSCILLATIONS. 1. Introduction
OBSERVATIONS OF SUNSPOT UMBRAL OSCILLATIONS T. HORN, J. STAUDE and V. LANDGRAF Astrophys. Institut Potsdam, Sonnenobservatorium Einsteinturm, Telegrafenberg, D-14473 Potsdam, Germany (Received 10 July
More informationSeptember 14, Monday 4. Tools for Solar Observations-II
September 14, Monday 4. Tools for Solar Observations-II Spectrographs. Measurements of the line shift. Spectrograph Most solar spectrographs use reflection gratings. a(sinα+sinβ) grating constant Blazed
More informationarxiv: v1 [astro-ph.sr] 25 Feb 2016
Solar Physics DOI: 10.1007/ - - - - Sunspot Observations and Counting at Specola Solare Ticinese in Locarno since 1957 Sergio Cortesi 1 Marco Cagnotti 1 Michele Bianda 2 Renzo Ramelli 2 Andrea Manna 1
More informationPhotospheric magnetism
Photospheric magnetism SAMI K. SOLANKI MAX PLANCK INSTITUTE FOR SOLAR SYSTEM RESEARCH Large and small magnetic features Polar fields 2 4 10 26 Mx/yr Quiet network Internetwork fields 10 28 Mx/yr Active
More informationGuidepost. Chapter 08 The Sun 10/12/2015. General Properties. The Photosphere. Granulation. Energy Transport in the Photosphere.
Guidepost The Sun is the source of light an warmth in our solar system, so it is a natural object to human curiosity. It is also the star most easily visible from Earth, and therefore the most studied.
More informationTwo-dimensional imaging of the He D 3 /Hβ emission ratio in quiescent solar prominences
Mem. S.A.It. Vol. 78, 108 c SAIt 2007 Memorie della Two-dimensional imaging of the He D 3 /Hβ emission ratio in quiescent solar prominences G. Stellmacher 1, E. Wiehr 2, and J. Hirzberger 3 1 Institute
More informationKilo-Gauss Magnetic Fields in Three DA White Dwarfs
14 th European Workshop on White Dwarfs ASP Conference Series, Vol. 334, 2005 D. Koester, S. Moehler Kilo-Gauss Magnetic Fields in Three DA White Dwarfs R. Aznar Cuadrado, 1 S. Jordan, 2 R. Napiwotzki,
More information9/13/18. ASTR 1040: Stars & Galaxies. Topics for Today and Tues. Nonvisible Light X-ray, UV, IR, Radio. SPITZER Infrared Telescope
ASTR 1040: Stars & Galaxies Solar Prominence from SOHO EIT Prof. Juri Toomre TAs: Ryan Horton, Loren Matilsky Lecture 6 Thur 13 Sept 2018 zeus.colorado.edu/astr1040-toomre Topics for Today and Tues Next
More informationLy-alpha polarimeter design for CLASP rocket experiment
Ly-alpha polarimeter design for CLASP rocket experiment H. Watanabe *a, N. Narukage b, M. Kubo b, R. Ishikawa b, T. Bando b, R. Kano b, S. Tsuneta b, K. Kobayashi c, K. Ichimoto a, J. Trujillo-Bueno d
More informationSpectropolarimetry: a tool for characterisation of exoplanets
Spectropolarimetry: a tool for characterisation of exoplanets Armagh. Observat ry March 31st, 2015 Polarisation I unpolarised partially polarised 100% polarised Polarisation II Image credit: http://www.tiffen.com/hi-res/polarizer-compare.jpg
More informationS.L. Guglielmino 1, F. Zuccarello 1, M. Murabito 1, P. Romano 2
S.L. Guglielmino 1, F. Zuccarello 1, M. Murabito 1, P. Romano 2 1 Dipartimento di Fisica e Astronomia Università di Catania, Italy 2 INAF Osservatorio Astrofisico di Catania, Italy ABSTRACT Measurements
More informationAstronomy. Astrophysics. G-band spectral synthesis and diagnostics of simulated solar magneto-convection
A&A 427, 335 343 (24) DOI: 1.151/4-6361:24471 c ESO 24 Astronomy & Astrophysics G-band spectral synthesis and diagnostics of simulated solar magneto-convection S. Shelyag 1, M. Schüssler 1, S. K. Solanki
More informationANALYSIS OF VECTOR MAGNETIC FIELDS IN SOLAR ACTIVE REGIONS BY HUAIROU, MEES AND MITAKA VECTOR MAGNETOGRAPHS
ANALYSIS OF VECTOR MAGNETIC FIELDS IN SOLAR ACTIVE REGIONS BY HUAIROU, MEES AND MITAKA VECTOR MAGNETOGRAPHS H. ZHANG 1, B. LABONTE 2,J.LI 2 and T. SAKURAI 3 1 National Astronomical Observatories, Chinese
More informationTHEMIS : Status and perspectives
Mem. S.A.It. Vol. 74, 790 c SAIt 2003 Memorie della THEMIS : Status and perspectives G. Ceppatelli 1,2, and C. Briand 1,3 1 THEMIS SL, c/o IAC, calle via Lactea s/n, E38205 La Laguna, Tenerife, Spain e-mail:
More informationSolar Observation using ALMA
Solar Observation using ALMA Sujin Kim ALMA EA Korean Node, KASI Content Science Target Cycle4 selection statistics: Sun Capability for Cycle5 Science Verification(SV) data - Single-dish observation -
More informationPolarimetry Working Group Recommendations on Telescope Calibration and Polarization Modulator Location
Project Documentation Document RPT-0046 Draft A3 Polarimetry Working Group Recommendations on Telescope Calibration and Polarization Modulator Location David Elmore ATST Instrument Scientist 1 November
More information