Spectral-lag relations in GRB pulses detected with HETE-2

Makoto Arimoto, Nobuyuki Kawai, Katsuaki Asano, Kevin Hurley, Motoko Suzuki, Yujin E. Nakagawa, Takashi Shimokawabe, Nicolas Vasquez Pazmino, Rie Sato, Masaru Matsuoka, Atsumasa Yoshida, Toru Tamagawa, Yuji Shirasaki, Satoshi Sugita, Ichiro Takahashi, Jean Luc Atteia, Alexandre Pelangeon, Roland Vanderspek, Carlo Graziani, Gregory PrigozhinJoel Villasenor, J. Garrett Jernigan, Geoffrey B. Crew, Takanori Sakamoto, George R. Ricker, Stanford E. Woosley, Nat Butler, Alan Levine, John P. Doty, Timothy Q. Donaghy, Donald Q. Lamb, Edward Fenimore, Mark Galassi, Michel Boer, Jean Pascal Dezalay, Jean François Olive, João Braga, Ravi Manchanda, Graziella Pizzichini

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Using a pulse-fit method, we investigated the spectral lags between the traditional gamma-ray band (50-400 keV) and the X-ray band (6-25keV) for 8 GRBs with known redshifts (GRB 010921, GRB 020124, GRB 020127, GRB 021211, GRB 030528, GRB 040924, GRB 041006, and GRB 050408), detected with the WXM and FREGATE instruments aboard the HETE-2 satellite. We found several relations for individual GRB pulses between the spectral lag and other observables, such as the luminosity, pulse duration, and peak energy, Epeak. The obtained results are consistent with those for BATSE, indicating that the BATSE correlations are still valid at lower energies (6-25 keV). Furthermore, we found that me photon energy dependence for the spectral lags can be reconciled with the simple curvature effect model. We discuss the implications of these results from various points of view.

Original languageEnglish
Pages (from-to)487-499
Number of pages13
JournalPublications of the Astronomical Society of Japan
Volume62
Issue number2
Publication statusPublished - 2010 Apr 25
Externally publishedYes

Fingerprint

time lag
pulses
energy
curvature
pulse duration
luminosity
gamma rays
photons
x rays
effect
method

Keywords

  • Gamma rays: Bursts
  • Gamma rays: observations
  • Radiation mechanisms: non-thermal

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Arimoto, M., Kawai, N., Asano, K., Hurley, K., Suzuki, M., Nakagawa, Y. E., ... Pizzichini, G. (2010). Spectral-lag relations in GRB pulses detected with HETE-2. Publications of the Astronomical Society of Japan, 62(2), 487-499.

Spectral-lag relations in GRB pulses detected with HETE-2. / Arimoto, Makoto; Kawai, Nobuyuki; Asano, Katsuaki; Hurley, Kevin; Suzuki, Motoko; Nakagawa, Yujin E.; Shimokawabe, Takashi; Pazmino, Nicolas Vasquez; Sato, Rie; Matsuoka, Masaru; Yoshida, Atsumasa; Tamagawa, Toru; Shirasaki, Yuji; Sugita, Satoshi; Takahashi, Ichiro; Atteia, Jean Luc; Pelangeon, Alexandre; Vanderspek, Roland; Graziani, Carlo; Prigozhin, Gregory; Villasenor, Joel; Jernigan, J. Garrett; Crew, Geoffrey B.; Sakamoto, Takanori; Ricker, George R.; Woosley, Stanford E.; Butler, Nat; Levine, Alan; Doty, John P.; Donaghy, Timothy Q.; Lamb, Donald Q.; Fenimore, Edward; Galassi, Mark; Boer, Michel; Dezalay, Jean Pascal; Olive, Jean François; Braga, João; Manchanda, Ravi; Pizzichini, Graziella.

In: Publications of the Astronomical Society of Japan, Vol. 62, No. 2, 25.04.2010, p. 487-499.

Research output: Contribution to journalArticle

Arimoto, M, Kawai, N, Asano, K, Hurley, K, Suzuki, M, Nakagawa, YE, Shimokawabe, T, Pazmino, NV, Sato, R, Matsuoka, M, Yoshida, A, Tamagawa, T, Shirasaki, Y, Sugita, S, Takahashi, I, Atteia, JL, Pelangeon, A, Vanderspek, R, Graziani, C, Prigozhin, G, Villasenor, J, Jernigan, JG, Crew, GB, Sakamoto, T, Ricker, GR, Woosley, SE, Butler, N, Levine, A, Doty, JP, Donaghy, TQ, Lamb, DQ, Fenimore, E, Galassi, M, Boer, M, Dezalay, JP, Olive, JF, Braga, J, Manchanda, R & Pizzichini, G 2010, 'Spectral-lag relations in GRB pulses detected with HETE-2', Publications of the Astronomical Society of Japan, vol. 62, no. 2, pp. 487-499.
Arimoto M, Kawai N, Asano K, Hurley K, Suzuki M, Nakagawa YE et al. Spectral-lag relations in GRB pulses detected with HETE-2. Publications of the Astronomical Society of Japan. 2010 Apr 25;62(2):487-499.
Arimoto, Makoto ; Kawai, Nobuyuki ; Asano, Katsuaki ; Hurley, Kevin ; Suzuki, Motoko ; Nakagawa, Yujin E. ; Shimokawabe, Takashi ; Pazmino, Nicolas Vasquez ; Sato, Rie ; Matsuoka, Masaru ; Yoshida, Atsumasa ; Tamagawa, Toru ; Shirasaki, Yuji ; Sugita, Satoshi ; Takahashi, Ichiro ; Atteia, Jean Luc ; Pelangeon, Alexandre ; Vanderspek, Roland ; Graziani, Carlo ; Prigozhin, Gregory ; Villasenor, Joel ; Jernigan, J. Garrett ; Crew, Geoffrey B. ; Sakamoto, Takanori ; Ricker, George R. ; Woosley, Stanford E. ; Butler, Nat ; Levine, Alan ; Doty, John P. ; Donaghy, Timothy Q. ; Lamb, Donald Q. ; Fenimore, Edward ; Galassi, Mark ; Boer, Michel ; Dezalay, Jean Pascal ; Olive, Jean François ; Braga, João ; Manchanda, Ravi ; Pizzichini, Graziella. / Spectral-lag relations in GRB pulses detected with HETE-2. In: Publications of the Astronomical Society of Japan. 2010 ; Vol. 62, No. 2. pp. 487-499.
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abstract = "Using a pulse-fit method, we investigated the spectral lags between the traditional gamma-ray band (50-400 keV) and the X-ray band (6-25keV) for 8 GRBs with known redshifts (GRB 010921, GRB 020124, GRB 020127, GRB 021211, GRB 030528, GRB 040924, GRB 041006, and GRB 050408), detected with the WXM and FREGATE instruments aboard the HETE-2 satellite. We found several relations for individual GRB pulses between the spectral lag and other observables, such as the luminosity, pulse duration, and peak energy, Epeak. The obtained results are consistent with those for BATSE, indicating that the BATSE correlations are still valid at lower energies (6-25 keV). Furthermore, we found that me photon energy dependence for the spectral lags can be reconciled with the simple curvature effect model. We discuss the implications of these results from various points of view.",
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T1 - Spectral-lag relations in GRB pulses detected with HETE-2

AU - Arimoto, Makoto

AU - Kawai, Nobuyuki

AU - Asano, Katsuaki

AU - Hurley, Kevin

AU - Suzuki, Motoko

AU - Nakagawa, Yujin E.

AU - Shimokawabe, Takashi

AU - Pazmino, Nicolas Vasquez

AU - Sato, Rie

AU - Matsuoka, Masaru

AU - Yoshida, Atsumasa

AU - Tamagawa, Toru

AU - Shirasaki, Yuji

AU - Sugita, Satoshi

AU - Takahashi, Ichiro

AU - Atteia, Jean Luc

AU - Pelangeon, Alexandre

AU - Vanderspek, Roland

AU - Graziani, Carlo

AU - Prigozhin, Gregory

AU - Villasenor, Joel

AU - Jernigan, J. Garrett

AU - Crew, Geoffrey B.

AU - Sakamoto, Takanori

AU - Ricker, George R.

AU - Woosley, Stanford E.

AU - Butler, Nat

AU - Levine, Alan

AU - Doty, John P.

AU - Donaghy, Timothy Q.

AU - Lamb, Donald Q.

AU - Fenimore, Edward

AU - Galassi, Mark

AU - Boer, Michel

AU - Dezalay, Jean Pascal

AU - Olive, Jean François

AU - Braga, João

AU - Manchanda, Ravi

AU - Pizzichini, Graziella

PY - 2010/4/25

Y1 - 2010/4/25

N2 - Using a pulse-fit method, we investigated the spectral lags between the traditional gamma-ray band (50-400 keV) and the X-ray band (6-25keV) for 8 GRBs with known redshifts (GRB 010921, GRB 020124, GRB 020127, GRB 021211, GRB 030528, GRB 040924, GRB 041006, and GRB 050408), detected with the WXM and FREGATE instruments aboard the HETE-2 satellite. We found several relations for individual GRB pulses between the spectral lag and other observables, such as the luminosity, pulse duration, and peak energy, Epeak. The obtained results are consistent with those for BATSE, indicating that the BATSE correlations are still valid at lower energies (6-25 keV). Furthermore, we found that me photon energy dependence for the spectral lags can be reconciled with the simple curvature effect model. We discuss the implications of these results from various points of view.

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KW - Gamma rays: Bursts

KW - Gamma rays: observations

KW - Radiation mechanisms: non-thermal

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