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SUMMARY:Constraint on the nature of annihilating dark matter with Low Surf
 ace Brightness Galaxies
DTSTART;VALUE=DATE-TIME:20191112T030600Z
DTEND;VALUE=DATE-TIME:20191112T030700Z
DTSTAMP;VALUE=DATE-TIME:20250110T182826Z
UID:indico-contribution-1541@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Daiki Hashimoto (Nagoya University)\nIn the context 
 of the high energy astrophysics\, the nature of dark matter annihilation e
 xpected to emit gamma rays have been probed utilizing observed gamma-ray f
 lux in a direction of a high matter-density region. Recently\, some studie
 s have been performed with nearby dwarf galaxies or the Galactic center an
 d then the cross section for dark matter annihilation have been constraine
 d.\nIn our study\, we focus on Low Surface Brightness Galaxies (LSBGs) cat
 aloged by the observation data of Hyper Suprime-Cam (HSC). LSBGs can be us
 ed as novel tracers of dark matter annihilation signals because of being m
 ore massive than dwarf spheroids and having less astronomical contaminatio
 ns due to relatively quiescent states of those\, which can perform robuste
 r research for dark matter annihilation signals. \nWe model the gamma-ray 
 flux from LSBGs using the 8 HSC-LSBGs measured each redshift\, and comperi
 ng with observed gamma-ray flux by Fermi Large Area Telescope\, provide th
 e upper limit of the cross section for dark matter annihilation. \nMoreove
 r\, we prospect the future constraint with soon-to-be-detected LSBGs by fu
 ture observation. In our poster presentation\, we report our method and re
 sults\, and also discuss the prospects for the future constraint.\n\nhttps
 ://indico.icrr.u-tokyo.ac.jp/event/259/contributions/1541/
LOCATION:The University of Tokyo\, Kashiwa Campus
URL:https://indico.icrr.u-tokyo.ac.jp/event/259/contributions/1541/
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