The Compact Central Object in Cassiopeia A: A Neutron Star with Hot Polar Caps or a Black Hole?

@article{Pavlov2000TheCC,
  title={The Compact Central Object in Cassiopeia A: A Neutron Star with Hot Polar Caps or a Black Hole?},
  author={Pavlov and Zavlin and Aschenbach and Tr{\"u}mper and Sanwal},
  journal={The Astrophysical journal},
  year={2000},
  volume={531 1},
  pages={
          L53-L56
        }
}
  • Pavlov, Zavlin, +2 authors Sanwal
  • Published 1 December 1999
  • Physics, Medicine
  • The Astrophysical journal
The central pointlike X-ray source of the Cassiopeia A supernova remnant was discovered in the Chandra first light observation and found later in the archival ROSAT and Einstein images. The analysis of these data does not show statistically significant variability of the source. Because of the small number of photons detected, different spectral models can fit the observed spectrum. The power-law fit yields the photon index gamma=2.6-4.1, and luminosity L(0.1-5.0 keV&parr0;=&parl0;2-60&parr0… Expand
A DEDICATED CHANDRA ACIS OBSERVATION OF THE CENTRAL COMPACT OBJECT IN THE CASSIOPEIA A SUPERNOVA REMNANT
We present results of a recent Chandra X-ray Observatory observation of the central compact object (CCO) in the supernova remnant (SNR) Cassiopeia A. This observation was carried out in anExpand
Discovery of a candidate central compact object in the galactic nonthermal SNR G330.2+1.0
We report on the discovery of a pointlike source (CXOU J160103.1-513353) at the center of the Galactic supernova remnant (SNR) G330.2+1.0 with Chandra X-Ray Observatory. The X-ray spectrum fits aExpand
THE CENTRAL X-RAY POINT SOURCE IN CASSIOPEIA A
The spectacular ii —rst light ˇˇ observation by the Chandra X-Ray Observatory revealed an X-ray point source near the center of the 300 yr old Cas A supernova remnant. We present an analysis of theExpand
NEW OPTICAL CONSTRAINTS ON THE PRESENCE OF A COMPACT CENTRAL OBJECT IN CASSIOPEIA A
Deep optical imaging at the location of the pointlike X-ray source at the center of the 300 yr old Cassiopeia A supernova remnant discovered in the Chandra first-light observation is presented.Expand
A Bow Shock Nebula around a Compact X-Ray Source in the Supernova Remnant IC 443
We present spectra and high resolution images of the hard X-ray feature along the southern edge of the supernova remnant IC 443. Data from the Chandra X-ray Observatory reveal a comet-shaped nebulaExpand
A pulsar wind nebula in the oxygen-rich supernova remnant g292.0+1.8
Using the Chandra X-Ray Observatory, we have discovered a diffuse, center-filled region of hard X-ray emission within the young, oxygen-rich supernova remnant (SNR) G292.0+1.8. Near the peak of thisExpand
The Compact Central Object in the RX J0852.0–4622 Supernova Remnant
The central region of the recently discovered supernova remnant (SNR) RX J0852.0-4622 was observed with the Advanced CCD Imaging Spectrometer detector aboard the Chandra X-Ray Observatory. We foundExpand
The X-Ray Source at the Center of the Cassiopeia A Supernova Remnant
We present the first results of an XMM-Newton observation of the central X-ray source in the Cas A supernova remnant. The spectrum can be fitted equally well with an absorbed steep power law (αph ~Expand
AN X-RAY SEARCH FOR COMPACT CENTRAL SOURCES IN SUPERNOVA REMNANTS. I. SNRs G093.3+6.9, G315.4-2.3, G084.2+0.8, AND G127.1+0.5
Most astronomers now accept that stars more massive than about 9?M? explode as supernovae and leave stellar remnants, either neutron stars or black holes, with neutron stars being more prevalent.Expand
The Chandra view of the supernova remnant 0506-68.0 in the large magellanic cloud
A new Chandra observation of SNR 0506-68.0 (also called N23) reveals a complex, highly structured morphology in the low-energy X-ray band and an isolated compact central object in the high-energyExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 25 REFERENCES
X-ray Pulsations from the Central Source in Puppis A
There are several supernova remnants which contain unresolved X-ray sources close to their centers, presumably radio-quiet neutron stars. To prove that these objects are indeed neutron stars, toExpand
A Comparison of X-Ray and Radio Emission from the Supernova Remnant Cassiopeia A
We compare the radio and soft X-ray brightness as a function of position within the young supernova remnant Cassiopeia A. A moderately strong correlation (r = 0.7) was found between the X-rayExpand
A Method for Distinguishing between Transiently Accreting Neutron Stars and Black Holes, in Quiescence
Neutron stars and black holes often reside in binaries where the accretion rate onto the compact object varies by orders of magnitude. These "X-ray transients" are observed both in outburst (when theExpand
High-resolution X-ray observations of the Cassiopeia A supernova remnant with the Einstein Observatory
Cas A was observed with the imaging detectors on the Einstein X-ray Observatory. We determine the mass of the expanding shell due to the interaction of the blast wave and the ambient medium. ThisExpand
EXOSAT observations of the Cassiopeia A supernova remnant
The young supernova remnant Cas A has been observed with the European X-ray observatory satellite Exosat. The remnant was observed with all instruments covering the range from 0.5 to 25 KeV. It isExpand
Nucleosynthesis and Mixing in Cassiopeia A.
TLDR
The first unequivocal identification of iron-rich ejecta produced by explosive silicon burning in a young Galactic SNR is made, indicating that bulk motions were extensive and energetic enough in Cas A to cause a spatial inversion of a significant portion of the supernova core. Expand
Thermal properties and detectability of neutron stars. II. Thermal evolution of rotation-powered neutron stars
Abstract After a brief introduction we present a progress report on the recent works carried out during the last ten years or so, on the thermal evolution of neutron stars and related problems. TheExpand
Cooling Neutron Stars with Accreted Envelopes
The relationships between the effective surface temperature Teff and the internal temperature Tb of nonmagnetized neutron stars with and without accreted envelopes are calculated for Teff > 5 × 104Expand
WSRT HI synthesis absorption study towards Cassiopeia A
We present high resolution images of the entire galactic HI spectrum of Cas A and display the whole data cube in various ways; the spatial resolution is 30 arcsec and the velocity resolution is 0.62Expand
A deep search for pulsed emission from Cassiopeia A
The deepest search yet for pulsed emission from the supernova remnant Cassiopeia A shows there to be no clear pulsar candidate at 408 MHz with a mean flux density over 80 mJy and period between 0.02Expand
...
1
2
3
...