Central compact object: Difference between revisions
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Revision as of 22:22, 12 December 2023
A central compact object (CCO) is a bright x-ray source found near the center of young, nearby supernova remnants. Given the observed x-ray flux and spectra observed from these objects, the almost certain conclusion is that CCOs are the remnant neutron stars which resulted from the recent supernova. Unlike most pulsars, the pulsed radio emission or variation in the observed x-rays is either nonexistent or difficult to detect, meaning that the inference that these objects are neutron stars comes from the assumption that the x-rays are due to the blackbody radiation of the neutron star.
The detection in 1980 of 1E 161348-5055 at the center of SNR RCW 103 using the Einstein Observatory[1] was once touted as the first CCO discovery, but is now classified as a slow-rotating magnetar[2]. Since then, some 13 CCOs have been positively identified with a further two as candidates.[3]
List of CCOs
The following list of confirmed CCOs and their associated supernova remnants is curated by Andrea De Luca, astronomer at the National Institute for Astrophysics.[2]
- RX J0822.0-4300 (center of Puppis A) (pulsations detected[4])
- CXOU J085201.4-461753 (center of RX J0852.0−4622)
- 1E 1207.4-5209 (center of PKS 1209−51/52) (pulsations detected[5])
- CXOU J160103.1-513353 (center of G330.2+1.0)
- 1WGA J1713.4-3949 (center of G347.3−0.5)
- XMMU J172054.5-372652 (center of G350.1−0.3)
- XMMU J173203.3-344518 (center of G353.6−0.7)
- CXOU J181852.0-150213 (center of G15.9+0.2)
- CXOU J185238.6+004020 (center of Kesteven 79) (pulsations detected[6])
- CXOU J232327.9+584842 (center of Cassiopeia A)
References
- ^ Tuohy, I.; Garmire, G. (1980-08-01). "Discovery of a compact X-ray source at the center of the SNR RCW 103". The Astrophysical Journal. 239: L107–L110. doi:10.1086/183303. ISSN 0004-637X.
- ^ a b De Luca, A (2017). "Central compact objects in supernova remnants". Journal of Physics: Conference Series. 932.
- ^ www.iasf-milano.inaf.it https://www.iasf-milano.inaf.it/~deluca/cco/main.htm. Retrieved 2023-12-12.
{{cite web}}: Missing or empty|title=(help) - ^ Gotthelf, E. V.; Halpern, J. P. (2009-04-01). "Discovery of a 112 ms X-Ray Pulsar in Puppis A: Further Evidence of Neutron Stars Weakly Magnetized at Birth". The Astrophysical Journal. 695: L35–L39. doi:10.1088/0004-637X/695/1/L35. ISSN 0004-637X.
- ^ Zavlin, V. E.; Pavlov, G. G.; Sanwal, D.; Trümper, J. (2000-09-01). "Discovery of 424 Millisecond Pulsations from the Radio-quiet Neutron Star in the Supernova Remnant PKS 1209-51/52". The Astrophysical Journal. 540: L25–L28. doi:10.1086/312866. ISSN 0004-637X.
- ^ Gotthelf, E. V.; Halpern, J. P.; Seward, F. D. (2005-07-01). "Discovery of a 105 ms X-Ray Pulsar in Kesteven 79: On the Nature of Compact Central Objects in Supernova Remnants". The Astrophysical Journal. 627: 390–396. doi:10.1086/430300. ISSN 0004-637X.