Hughes et al., 1998 ApJ, 505, 732 : ASCA. Westerlund, 1990 A&ARv, 2, 29 : Distance to LMC 1 ) ) (ergs s F X L X. 2 s 1. ) (ergs cm
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1 1 SUMMARY 1 SNR Summary Common Name: N 49 Distance: 50 kpc (distance to LMC, Westerlund(1990) ) Position of Central Source (J2000): ( , ) X-ray size: 85 x 65 Description:?? 1.1 Summary of Chandra Observations Sequence Obs ID Instrument Exposure uf Exposure f Date Observed Aimpoint (J2000) (ks) (ks) (α, δ) ACIS ( , ) Exposure uf Exposure f Exposure time of un-filtered event file Exposure time of filtered event file The whole remnant is covered by chip ACIS-S3(CCD ID=7) Subarray was used and it does not cover whole remnant. 1.2 Chandra Counts and Fluxes Region Energy Range Signal Rate F abs X F X L X (kev) (counts s 1 ) (ergs cm 2 s 1 ) (ergs cm 2 s 1 ) (ergs s 1 ) total e e e e e+37 ( 747 ) e e e e e e e e e e+35 central object e e e e e+36 ( 747 ) e e e e e e e e e e+35 shell e e e e e+37 ( 747 ) e e e e e e e e e e+35 N H = 0.34 (10 22 cm 2 ) Assumed distance: 50 kpc (distance to LMC, Westerlund(1990) ) nh was derived from the spectrum of the central source because observation did not cover the whole remant, some flux values are partial values. 1 SUMMARY Nearby Sources Obs ID Position (J2000) Size Net Count Count rate Note 747 (note) 1. This nearby source list is incomplete. All the above sources are originally from the "src2.fits" file which is distributed with standard chandra processing. Only sources with significant count rate and which are clear to visual inspection are included. 2. The size given above is the size of the region used in detecting that source. 3. For each source, background was subtracted from annular region around the source. 1.4 References Dickel and Milne, 1998 AJ, 115, 1057 : ATCA Hughes et al., 1998 ApJ, 505, 732 : ASCA Westerlund, 1990 A&ARv, 2, 29 : Distance to LMC
2 2 FIT DETAIL 3 2 Fit Detail See spectrum page for used regions. nh was dervide from central source. 2.1 Central Object: spectrum from central object does not fit well in the low energy regime. derived nh is rather large compared to the value( ) given by Hughes et al.(1998). source=(xswabs * powlaw1d) reduced χ 2 = nh = ˆ22/cmˆ2 2.2 Point Source(2): spectum was re-fitted with ignoring energy below 0.6 kev. this nh value was used in estimating the flux value. source=(xswabs * powlaw1d) reduced χ 2 = nh = ˆ22/cmˆ2 2.3 Shell: spectrum from shell nh was fixed at the value derived above. two thermal plsma model. source=(xswabs * (xsraymond + xsraymond)) reduced χ 2 = nh = ˆ22/cmˆ2 2 FIT DETAIL Total: spectrum from total nh and power-law component for point source was fixed at the derived value in the previous fit. source=(xswabs * ((powlaw1d + xsraymond) + xsraymond)) reduced χ 2 = nh = ˆ22/cmˆ2
3 3 CHANDRA IMAGES : BAND IMAGES 5 3 Chandra Images : Band Images Left : raw image, binned by 1x1 pixel Right : gaussian smoothed version of above ( σ = 2 pixel) 3.1 Wide Band Images Total : ev acis_e _FLUXED.fits_0 acis_e _FLUXED_G2.fits_0 Soft Band : ev acis_e _FLUXED.fits_0 acis_e _FLUXED_G2.fits_0 3 CHANDRA IMAGES : BAND IMAGES 6 Hard Band : ev acis_e _FLUXED.fits_0 acis_e _FLUXED_G2.fits_0 0 1e 07 2e 07 3e e 08 4e 08 6e 08 8e Band images used in true color image. Red : ev acis_e _FLUXED.fits_0 acis_e _FLUXED_G2.fits_0 5e e 06 2e 06 3e 06
4 3 CHANDRA IMAGES : BAND IMAGES 7 Green : ev acis_e _FLUXED.fits_0 acis_e _FLUXED_G2.fits_0 0 2e 07 4e 07 6e 07 8e 07 1e e 07 4e 07 6e 07 8e 07 Blue : ev acis_e _FLUXED.fits_0 acis_e _FLUXED_G2.fits_0 0 1e 07 2e 07 3e 07 4e 07 5e e 08 1e e 07 3 CHANDRA IMAGES : BAND IMAGES Misc. : ev acis_e _FLUXED.fits_0 acis_e _FLUXED_G2.fits_0 0 1e 07 2e 07 3e 07 4e e 08 1e e 07
5 4 CHANDRA IMAGES : TRUE COLOR 9 4 Chandra Images : True Color Individual images are adaptively smoothed. Warning : the adaptive smoothing process sometimes produces artifacts. convolution method : fft kernel type : gauss significance ( min, max ) : ( 3, 5 ) RED : GREEN : BLUE : ev ev ev acis_e _S_FLUXED.fits_0 acis_e _S_FLUXED.fits_0 acis_e _S_FLUXED.fits_0 0 1e 06 2e 06 3e 06 2e 07 4e 07 6e 07 5e 08 1e 07 5 CHANDRA SPECTRUM 10 5 Chandra Spectrum Images show Regions used to extract spectra Regions with red strikes are excluded 5.1 ObsID 747 Background was subtracted from the region around the SNR. total shell
6 5 CHANDRA SPECTRUM 11 central object 5 CHANDRA SPECTRUM 12
7 6 RADIO IMAGE 13 6 Radio Image left : radio image right : chandra x-ray image with radio contour lines 13-cm cm flux density: 0.96 Jy -. Image from Dickel and Milne(1998) -. Chandra image has transformed to the same scale of the radio one _13cm.fits_0 acis_e _FLUXED_G2.fits_0 DEC DEC 66:04:30 66:04:30 66:05:30 66:05:30 5h26m05s 5h26m00s 5h25m55s 5h26m05s 5h26m00s 5h25m55s RA RA (mjy/beam) (photons/cm^2/sec/pixel) Summary of Observation Telescope..... Australia Telescope Compact Array Date March 22, April 2 Frequency GHz Beam size x3.0 1 sigma noise mjy / beam 7 IMAGES FROM SURVEY MISSIONS 14 7 Images from Survey Missions Left : Chandra Image ( kev) Center : Images from SkyView with the same scale right : Images from SkyView with a reduced scale ROSAT PSPC (2.0 deg): X-ray ( kev) 4850 MHz: Radio (4850 MHz continuum) Digitized Sky Survey: Optical (J or E band images with a few exceptions)
8 7 IMAGES FROM SURVEY MISSIONS 15 The Two Micron All Sky Survey (H-band): IR (1.65 microns) The Two Micron All Sky Survey (K-band): IR (2.17 microns) The Two Micron All Sky Survey (J-band): IR (1.25 microns)
e e-03. which is distributed with standard chandra processing. visual inspection are included.
1 SUMMARY 1 SNR 0505-67.9 1 Summary Common Name: DEM L71 Distance: 50 kpc (distance to LMC, Westerlund(1990) ) Center of X-ray emission (J2000): ( 05 05 42.0, -67 52 39.8 ) X-ray size: 86 x 74 Description:
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1 SUMMARY 1 G21.5-0.9 1 Summary Distance: 5 kpc ( Safi-Harb et al., 2001 ) Position of Central Source (J2000): ( 18 33 34.0, -10 34 15.3 ) X-ray size: 4.7 x4.6 Description: 1.1 Summary of Chandra Observations
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