CHANDRA DISCOVERY OF LUMINOUS SUPERSOFT X-RAY SOURCES IN M81

@article{Swartz2002CHANDRADO,
  title={CHANDRA DISCOVERY OF LUMINOUS SUPERSOFT X-RAY SOURCES IN M81},
  author={Douglas A. Swartz and Kajal K. Ghosh and Valery F. Suleimanov and Allyn F. Tennant and Kinwah Wu},
  journal={The Astrophysical Journal},
  year={2002},
  volume={574},
  pages={382-397}
}
A Chandra ACIS-S imaging observation of the nearby galaxy M81 (NGC 3031) reveals nine luminous soft X-ray sources. The local environments, X-ray spectral properties, and X-ray light curves of the sources are presented and discussed in the context of prevailing physical models for supersoft sources. It is shown that the sample falls within expectations based on population synthesis models taken from the literature, although the high observed luminosities (Lobs � 2 � 10 36 –3 � 10 38 ergs s � 1… 
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References

SHOWING 1-10 OF 54 REFERENCES
Chandra X-ray Sources in M101
A deep (98.2 ks) Chandra Cycle 1 observation has revealed a wealth of discrete X-ray sources as well as diffuse emission in the nearby face-on spiral galaxy M101. From this rich data set we have
Formation and evolution of luminous supersoft X-ray sources
Luminous supersoft X-ray sources, with characteristic luminosities of approximately 10(exp 38) ergs/s and temperatures, kT, of approximately 35 eV, have been established as a new and distinct class
Resolving the Mystery of X-Ray Faint Elliptical Galaxies
Chandra observations of the X-ray-faint elliptical galaxy NGC 4697 resolve much of the X-ray emission (61% within one effective radius) into ~80 point sources, of which most are low-mass X-ray
ROSAT X-Ray Observations of the Spiral Galaxy M81
We present results from the analysis of deep ROSAT HRI and PSPC observations of the spiral galaxy M81. The inferred total (0.5-2 keV band) luminosity of M81 is ~3 × 1040 ergs s-1, excluding the
Ionization Nebulae Surrounding CAL 83 and Other Supersoft X-ray Sources
We present the results of an optical search for ionized gaseous nebulae surrounding luminous, "supersoft" X-ray sources in the Large and Small Magellanic Clouds. This relatively new and mysterious
CHANDRA X-RAY OBSERVATIONS OF THE X-RAY FAINT ELLIPTICAL GALAXY NGC 4697
A Chandra ACIS S3 observation of the X-ray faint elliptical galaxy NGC 4697 resolves much of the X-ray emission (61% of the counts from within one effective radius) into 90 point sources, of which
The derived population of luminous supersoft X-ray sources
The existence of a new class of astrophysical object, luminous supersoft X-ray sources, has been established through ROSAT satellite observations and analysis during the past approximately 3 yr.
The Nature of Ultraluminous Compact X-Ray Sources in Nearby Spiral Galaxies
Studies were made of ASCA spectra of seven ultraluminous compact X-ray sources in nearby spiral galaxies: M33 X-8, M81 X-6, IC 342 source 1, Dwingeloo 1 X-1, NGC 1313 source B, and two sources in NGC
Chandra High-Resolution Camera observations of the luminous X-ray source in the starburst galaxy M82
We have analyzed Chandra High Resolution Camera observations of the starburst galaxy M82, concentrating on the most luminous x-ray source. We find a position for the source of $\rm R.A. = 09^h 55^m
Properties of the Chandra Sources in M81
The Chandra X-Ray Observatory obtained a 50 ks observation of the central region of M81 using the ACIS-S in imaging mode. The global properties of the 97 X-ray sources detected in the inner 83 × 83
...
1
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3
4
5
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