Soft X-ray observation of the prompt emission of GRB 100418A

Ritsuko Imatani; Hiroshi Tomida; Satoshi Nakahira; Masashi Kimura; Takanori Sakamoto; Makoto Arimoto; Yoshitaka Morooka; Daisuke Yonetoku; Nobuyuki Kawai; Hiroshi Tsunemi

doi:10.1093/pasj/psv075

Soft X-ray observation of the prompt emission of GRB 100418A

Ritsuko Imatani^*, Hiroshi Tomida, Satoshi Nakahira, Masashi Kimura, Takanori Sakamoto, Makoto Arimoto, Yoshitaka Morooka, Daisuke Yonetoku, Nobuyuki Kawai, Hiroshi Tsunemi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We have observed the prompt emission of GRB 100418A from its beginning captured by the MAXI SSC (0.7-7 keV) on board the International Space Station followed by the Swift XRT (0.3-10 keV) observation. The light curve can be fitted by a combination of a power-law component and an exponential component (the decay constant is 31.6 ± 1.6 s). The X-ray spectrum is well expressed by the Band function with E_p ≤ 8.3 keV. This is the brightest gamma-ray burst showing a very low value of E_p. It satisfies the Yonetoku relation (E_p-L_p). It is also consistent with the Amati relation (E_p-E_iso) within a 2.5σ level.

Original language	English
Pages (from-to)	S291-S297
Journal	Publications of the Astronomical Society of Japan
Volume	68
DOIs	https://doi.org/10.1093/pasj/psv075
Publication status	Published - 2016 Jun 1
Externally published	Yes

Keywords

gamma-ray burst: general
gamma-ray burst: individual(GRB 100418A)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/pasj/psv075

Cite this

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title = "Soft X-ray observation of the prompt emission of GRB 100418A",

abstract = "We have observed the prompt emission of GRB 100418A from its beginning captured by the MAXI SSC (0.7-7 keV) on board the International Space Station followed by the Swift XRT (0.3-10 keV) observation. The light curve can be fitted by a combination of a power-law component and an exponential component (the decay constant is 31.6 ± 1.6 s). The X-ray spectrum is well expressed by the Band function with Ep ≤ 8.3 keV. This is the brightest gamma-ray burst showing a very low value of Ep. It satisfies the Yonetoku relation (Ep-Lp). It is also consistent with the Amati relation (Ep-Eiso) within a 2.5σ level.",

keywords = "gamma-ray burst: general, gamma-ray burst: individual(GRB 100418A)",

author = "Ritsuko Imatani and Hiroshi Tomida and Satoshi Nakahira and Masashi Kimura and Takanori Sakamoto and Makoto Arimoto and Yoshitaka Morooka and Daisuke Yonetoku and Nobuyuki Kawai and Hiroshi Tsunemi",

year = "2016",

month = jun,

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doi = "10.1093/pasj/psv075",

language = "English",

volume = "68",

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journal = "Publications of the Astronomical Society of Japan",

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publisher = "Astronomical Society of Japan",

}

TY - JOUR

T1 - Soft X-ray observation of the prompt emission of GRB 100418A

AU - Imatani, Ritsuko

AU - Tomida, Hiroshi

AU - Nakahira, Satoshi

AU - Kimura, Masashi

AU - Sakamoto, Takanori

AU - Arimoto, Makoto

AU - Morooka, Yoshitaka

AU - Yonetoku, Daisuke

AU - Kawai, Nobuyuki

AU - Tsunemi, Hiroshi

PY - 2016/6/1

Y1 - 2016/6/1

N2 - We have observed the prompt emission of GRB 100418A from its beginning captured by the MAXI SSC (0.7-7 keV) on board the International Space Station followed by the Swift XRT (0.3-10 keV) observation. The light curve can be fitted by a combination of a power-law component and an exponential component (the decay constant is 31.6 ± 1.6 s). The X-ray spectrum is well expressed by the Band function with Ep ≤ 8.3 keV. This is the brightest gamma-ray burst showing a very low value of Ep. It satisfies the Yonetoku relation (Ep-Lp). It is also consistent with the Amati relation (Ep-Eiso) within a 2.5σ level.

AB - We have observed the prompt emission of GRB 100418A from its beginning captured by the MAXI SSC (0.7-7 keV) on board the International Space Station followed by the Swift XRT (0.3-10 keV) observation. The light curve can be fitted by a combination of a power-law component and an exponential component (the decay constant is 31.6 ± 1.6 s). The X-ray spectrum is well expressed by the Band function with Ep ≤ 8.3 keV. This is the brightest gamma-ray burst showing a very low value of Ep. It satisfies the Yonetoku relation (Ep-Lp). It is also consistent with the Amati relation (Ep-Eiso) within a 2.5σ level.

KW - gamma-ray burst: general

KW - gamma-ray burst: individual(GRB 100418A)

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DO - 10.1093/pasj/psv075

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SP - S291-S297

JO - Publications of the Astronomical Society of Japan

JF - Publications of the Astronomical Society of Japan

ER -

Soft X-ray observation of the prompt emission of GRB 100418A

Abstract

Keywords

ASJC Scopus subject areas

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