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Very old isolated compact objects as dark matter probes
Fan, Yi-Zhong1; Yang, Rui-Zhi; Chang, Jin
Source PublicationPHYSICAL REVIEW D
AbstractVery old isolated neutron stars and white dwarfs have been suggested to be probes of dark matter. To play such a role, two requests should be fulfilled, i.e., the annihilation luminosity of the captured dark matter particles is above the thermal emission of the cooling compact objects (request-I) and also dominate over the energy output due to the accretion of normal matter onto the compact objects (request-II). Request-I calls for very dense dark matter medium and the critical density sensitively depends on the residual surface temperature of the very old compact objects. The accretion of interstellar/intracluster medium onto the compact objects is governed by the physical properties of the medium and by the magnetization and rotation of the stars and may outshine the signal of dark matter annihilation. Only in a few specific scenarios both requests are satisfied and the compact objects are dark matter burners. The observational challenges are discussed and a possible way to identify the dark matter burners is outlined.
KeywordInteracting Massive Particles Isolated Neutron-stars Globular-clusters Emission Sun Candidates Energies Capture Dwarfs
Subject AreaAstronomy & Astrophysics ; Physics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000296914900002
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Fan, Yi-Zhong,Yang, Rui-Zhi,Chang, Jin. Very old isolated compact objects as dark matter probes[J]. PHYSICAL REVIEW D,2011,84(10):1-9.
APA Fan, Yi-Zhong,Yang, Rui-Zhi,&Chang, Jin.(2011).Very old isolated compact objects as dark matter probes.PHYSICAL REVIEW D,84(10),1-9.
MLA Fan, Yi-Zhong,et al."Very old isolated compact objects as dark matter probes".PHYSICAL REVIEW D 84.10(2011):1-9.
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