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SUMMARY:Dark Matter Heating vs. Rotochemical Heating in Old Neutron Stars
DTSTART;VALUE=DATE-TIME:20191112T082000Z
DTEND;VALUE=DATE-TIME:20191112T084000Z
DTSTAMP;VALUE=DATE-TIME:20250110T182832Z
UID:indico-contribution-1551@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Keisuke Yanagi (University of Tokyo)\nWIMP DMs in th
 e Universe accumulate in neutron stars (NSs) through their interactions wi
 th nucleons. It has been known that their annihilation inside the NS core 
 causes late-time heating\, with which the surface temperature becomes $T_s
  \\simeq (2-3) \\times 10^3$ K for the NS age $t > 10^{6-7}$ years. Thus t
 he measurement of NS surface temperature can be used as a new probe of WIM
 P DMs. Because of the strong gravity of NSs\, DM heating has several advan
 tages compared to the direct detection experiments on the earth.\n\nDespit
 e such advantages\, the background on the DM heating is rarely discussed i
 n the particle physics community. In particular\, the rotochemical heating
 \, internal heating caused by the out-of-equilibrium beta reactions in a N
 S\, should be considered because it does not assume any exotic physics. In
  fact\, if the rotochemical heating operates in a NS\, it may conceal the 
 DM heating effects.\n\nIn this work\, we reevaluate the significance of th
 e DM heating in NSs\, including the effect of the rotochemical heating. We
  show that the signature of DM heating can still be detected in old ordina
 ry pulsars\, and discuss what is necessary to confirm the evidence for the
  DM heating.\n\nhttps://indico.icrr.u-tokyo.ac.jp/event/259/contributions/
 1551/
LOCATION:The University of Tokyo\, Kashiwa Campus
URL:https://indico.icrr.u-tokyo.ac.jp/event/259/contributions/1551/
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