

|
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基本情報 |
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氏名 |
山内 大介 |
氏名(カナ) |
ヤマウチ ダイスケ |
氏名(英語) |
Yamauchi Daisuke |
所属 |
理学部 物理学科 |
職名 |
講師 |
researchmap研究者コード |
B000327615 |
researchmap機関 |
岡山理科大学 |
Femto-lensing due to a Cosmic String
Chul-Moon Yoo, Ryo Saito, Yuuti Sendouda, Ketaro Takahashi, Daisuke Yamauchi
We consider femto-lensing due to a cosmic string. If a cosmic string with the deficit angle Δ ∼ 100 [femto-arcsec] ∼ 10−18 [rad] exists around the line of sight of a gamma-ray burst, we may observe characteristic interference patterns caused by gravitational lensing in the energy spectrum of the gamma-ray burst. This “femto-lensing” event was first proposed as a tool to probe small mass primordial black holes. In this paper, we propose the use of femto-lensing to probe cosmic strings with extremely small tension. Observability conditions and the event rate are discussed. Differences between the cases of a point mass and a cosmic string are presented.
Progress of Theoretical and Experimental Physics
https://doi.org/10.1093/ptep/pts045
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