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: http://hea-www.harvard.edu/ChandraSNR/SNRJ0537.8-6910/
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Дата индексирования: Fri Feb 28 01:02:58 2014
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| SNR J0537.8-6910
Common Name: N157B Distance: 50kpc( distance to LMC, Westerlund(1990) )Position of Central Source (J2000): ( 05 37 47.4, -69 10 19.9 )X-ray size: 2.0x2.0 Description: irregular with bright central PWN and 16 ms psr | |
| Not available | ![2783/work/tr2.jpg](2783/work/tr2.jpg)
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Radio | X-Ray |
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| Summary of Chandra Observations
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Sequence | Obs. ID | Detectors Used | Exposure uf (ks) | Exposure f (ks) | Date Observed | Aimpoint (J2000) (RA, Dec) | 500233
| 2783
| "ACIS-7"
| 29.3 | 29.3 | 2002-08-23 | ( 05 37 47.6, -69 10 20.0 ) |
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![](/ChandraSNR/graphics/note_small.gif) | Exposureuf => Exposure time of unfiltered event file Exposuref => Exposure time of filtered event file | |
| The whole remnant is covered by chip ACIS-S3(CCD_ID=7)Data from 2 summed subarrrays
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| Chandra Event File
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Click left mouse button on hyperlink below to download file | |
Obs. ID | Event 2 FITS File (un-filtered) | Event 2 FITS File (filtered) | AUX file (asol, badpix etc.) | 2783 | 4.6 MB | 4.6 MB | 13.2 MB |
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| Chandra Counts and Fluxes
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Region | Energy Range (keV) | Signal (counts) | Rate (counts s-1) | FabsX (ergs cm-2s-1) | FX (ergs cm-2s-1) | LX (ergs s-1) | | 0.3 - 10.0 | 5.739e+04 | 1.957e+00 | 9.47e-12 | 1.80e-11 | 5.36e+36 |
0.3 - 2.1 | 4.295e+04 | 1.465e+00 | 3.36e-12 | 1.17e-11 | 3.47e+36 |
2.1 - 10.0 | 1.472e+04 | 5.020e-01 | 6.13e-12 | 6.37e-12 | 1.90e+36 |
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![](/ChandraSNR/graphics/note_small.gif) | NH = 0.4(1022 cm-2) Assumed distance: 50kpc ( distance to LMC, Westerlund(1990) ) | - Spectrum of total remnant fit with power law + mekal model
- Background taken from 2 regions S of SNR
- see fit detail page for more about the fit.
- see chandra spectrum page for region used.
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| Chandra Images
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| Images in Several Energy BandsTrue Color Imageequivalent width map
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Chandra Spectra | |
| Spectra of Several Regions
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Other Wavelengths | |
| Radio ImagesSurvey Missions
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Compact Sources | |
Obs. ID | Position (J2000) | Size | Net Count | Count rate | Note | 2783 | |
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![](/ChandraSNR/graphics/note_small.gif) | |
This list is not complete. Sources are obvious and usually within or close to the remnant. The size refers to the appearance of the source and can be larger for off-axis sources.
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References | |
| Westerlund 1990, A&ARv, 2, 29 : Distance to LMC