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| 0538-69.1
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 | 
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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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 | 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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 Netscape users, "Shift + left mouse button" will download file | |
Obs. ID | Event 2 FITS File
(un-filtered) | Event 2 FITS File
(filtered) | AUX file
(asol, badpix etc.) | | 2783 | 7.6 MB | 7.6 MB | 13.4 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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| 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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Nearby Sources | |
Obs. ID | Position (J2000) | Size | Net Count | Count rate | Note | | 2783 | |
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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.The size given above is the size of the region used in detecting that source.For each source, background was subtracted from an annular region around the source.
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References | |
| Westerlund 1990, A&ARv, 2, 29 : Distance to LMC
