Speaker
Dr
Shunichi Horigome
(Kavli IPMU)
Description
Dwarf spheroidal galaxies (dSphs) are known as promising candidates of the indirect detection of the WIMP dark matter. However, the sensitivity of the detection depends on an astrophysical factor, so-called $J$-factor, which has various statistical uncertainties. These uncertainties affect the sensitivity of the detection by a factor of O(10), thus we should consider these uncertainties to achieve proper constraints on theories of the dark matter. In this talk, we will focus on one of the uncertainty sources, the foreground contamination problem, and present our new method. In contrast with that the conventional method cannot estimate the amount of the uncertainty caused by the contamination effect, our method can properly estimate the amount of uncertainty as a statistical error thanks to mixture model approach.
| Please choose the session this abstract belongs to | Dark matter |
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Primary author
Dr
Shunichi Horigome
(Kavli IPMU)
Co-authors
Prof.
Kohei Hayashi
(National Institute of Technology, Ichinoseki College)
Prof.
Masahiro Ibe
(ICRR)
Prof.
Miho Ishigaki
(National Astronomical Observatory of Japan)
Prof.
Shigeki Matsumoto
(Kavli IPMU)
