Suzaku observation of X-ray afterglow: Spectral and temporal behaviors

D. Yonetoku, T. Murakami, H. Kodaira, S. Okuno, S. Yoshinari, K. Abe, L. Angelini, S. Barthelmy, N. Gehrels, N. Ishikawa, L. J. Kaluzienski, N. Kawai, R. L. Kelley, K. Kinugasa, T. Kohmura, K. Kubota, Y. Maeda, S. Maeno, H. Murakami, Y. E. NakagawaK. Nakazawa, John Andrew Nousek, K. Onda, J. N. Reeves, G. Ricker, G. Sato, E. Sonoda, M. Suzuki, T. Takahashi, T. Tamagawa, M. S. Tashiro, K. Torii, Y. Ueda, Y. Urata, K. Yamaoka, M. Yamauchi, A. Yoshida

Research output: Contribution to journalArticle

Abstract

We report about early X-ray afterglow observations of GRB 060105 by Swift and Suzaku. The Suzaku team commenced a pre-planned target of opportunity observation at 5.3 h after the Swift trigger. Following the prompt emission and successive very steep decay, a shallow decay was observed from T0 + 187 s to T0 + 1287s by Swift. After that, an extremely early steep decay was observed in T0 + (4 30) ks. The light curve flattened again and another steep decay from T0 + 50 ks to the end of Suzaku observations was observed. Both steep decays exhibited almost same decay indices of 2.3-2.4. This break time, if it is caused by a jet break, is the earliest case among X-ray afterglow observations, suggesting a very narrow jet opening angle is about 0.7 degree. The unique Suzaku/XIS data allow us to set very tight upper limits on emission line in this GRB. Using the reported pseudo-redshift of z = 4.0 ± 1.3. we set the upper limit on the equivalent width of iron emission line at a few eV.

Original languageEnglish (US)
Pages (from-to)1253-1256
Number of pages4
JournalNuovo Cimento della Societa Italiana di Fisica B
Volume121
Issue number10-11
DOIs
StatePublished - Oct 1 2006

Fingerprint

afterglows
decay
x rays
light curve
actuators
iron

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Yonetoku, D., Murakami, T., Kodaira, H., Okuno, S., Yoshinari, S., Abe, K., ... Yoshida, A. (2006). Suzaku observation of X-ray afterglow: Spectral and temporal behaviors. Nuovo Cimento della Societa Italiana di Fisica B, 121(10-11), 1253-1256. https://doi.org/10.1393/ncb/i2007-10243-8
Yonetoku, D. ; Murakami, T. ; Kodaira, H. ; Okuno, S. ; Yoshinari, S. ; Abe, K. ; Angelini, L. ; Barthelmy, S. ; Gehrels, N. ; Ishikawa, N. ; Kaluzienski, L. J. ; Kawai, N. ; Kelley, R. L. ; Kinugasa, K. ; Kohmura, T. ; Kubota, K. ; Maeda, Y. ; Maeno, S. ; Murakami, H. ; Nakagawa, Y. E. ; Nakazawa, K. ; Nousek, John Andrew ; Onda, K. ; Reeves, J. N. ; Ricker, G. ; Sato, G. ; Sonoda, E. ; Suzuki, M. ; Takahashi, T. ; Tamagawa, T. ; Tashiro, M. S. ; Torii, K. ; Ueda, Y. ; Urata, Y. ; Yamaoka, K. ; Yamauchi, M. ; Yoshida, A. / Suzaku observation of X-ray afterglow : Spectral and temporal behaviors. In: Nuovo Cimento della Societa Italiana di Fisica B. 2006 ; Vol. 121, No. 10-11. pp. 1253-1256.
@article{df972946e26441e79b252a5811463455,
title = "Suzaku observation of X-ray afterglow: Spectral and temporal behaviors",
abstract = "We report about early X-ray afterglow observations of GRB 060105 by Swift and Suzaku. The Suzaku team commenced a pre-planned target of opportunity observation at 5.3 h after the Swift trigger. Following the prompt emission and successive very steep decay, a shallow decay was observed from T0 + 187 s to T0 + 1287s by Swift. After that, an extremely early steep decay was observed in T0 + (4 30) ks. The light curve flattened again and another steep decay from T0 + 50 ks to the end of Suzaku observations was observed. Both steep decays exhibited almost same decay indices of 2.3-2.4. This break time, if it is caused by a jet break, is the earliest case among X-ray afterglow observations, suggesting a very narrow jet opening angle is about 0.7 degree. The unique Suzaku/XIS data allow us to set very tight upper limits on emission line in this GRB. Using the reported pseudo-redshift of z = 4.0 ± 1.3. we set the upper limit on the equivalent width of iron emission line at a few eV.",
author = "D. Yonetoku and T. Murakami and H. Kodaira and S. Okuno and S. Yoshinari and K. Abe and L. Angelini and S. Barthelmy and N. Gehrels and N. Ishikawa and Kaluzienski, {L. J.} and N. Kawai and Kelley, {R. L.} and K. Kinugasa and T. Kohmura and K. Kubota and Y. Maeda and S. Maeno and H. Murakami and Nakagawa, {Y. E.} and K. Nakazawa and Nousek, {John Andrew} and K. Onda and Reeves, {J. N.} and G. Ricker and G. Sato and E. Sonoda and M. Suzuki and T. Takahashi and T. Tamagawa and Tashiro, {M. S.} and K. Torii and Y. Ueda and Y. Urata and K. Yamaoka and M. Yamauchi and A. Yoshida",
year = "2006",
month = "10",
day = "1",
doi = "10.1393/ncb/i2007-10243-8",
language = "English (US)",
volume = "121",
pages = "1253--1256",
journal = "Nuovo Cimento della Societa Italiana di Fisica B",
issn = "1594-9982",
publisher = "Editrice Compositori s.r.l.",
number = "10-11",

}

Yonetoku, D, Murakami, T, Kodaira, H, Okuno, S, Yoshinari, S, Abe, K, Angelini, L, Barthelmy, S, Gehrels, N, Ishikawa, N, Kaluzienski, LJ, Kawai, N, Kelley, RL, Kinugasa, K, Kohmura, T, Kubota, K, Maeda, Y, Maeno, S, Murakami, H, Nakagawa, YE, Nakazawa, K, Nousek, JA, Onda, K, Reeves, JN, Ricker, G, Sato, G, Sonoda, E, Suzuki, M, Takahashi, T, Tamagawa, T, Tashiro, MS, Torii, K, Ueda, Y, Urata, Y, Yamaoka, K, Yamauchi, M & Yoshida, A 2006, 'Suzaku observation of X-ray afterglow: Spectral and temporal behaviors', Nuovo Cimento della Societa Italiana di Fisica B, vol. 121, no. 10-11, pp. 1253-1256. https://doi.org/10.1393/ncb/i2007-10243-8

Suzaku observation of X-ray afterglow : Spectral and temporal behaviors. / Yonetoku, D.; Murakami, T.; Kodaira, H.; Okuno, S.; Yoshinari, S.; Abe, K.; Angelini, L.; Barthelmy, S.; Gehrels, N.; Ishikawa, N.; Kaluzienski, L. J.; Kawai, N.; Kelley, R. L.; Kinugasa, K.; Kohmura, T.; Kubota, K.; Maeda, Y.; Maeno, S.; Murakami, H.; Nakagawa, Y. E.; Nakazawa, K.; Nousek, John Andrew; Onda, K.; Reeves, J. N.; Ricker, G.; Sato, G.; Sonoda, E.; Suzuki, M.; Takahashi, T.; Tamagawa, T.; Tashiro, M. S.; Torii, K.; Ueda, Y.; Urata, Y.; Yamaoka, K.; Yamauchi, M.; Yoshida, A.

In: Nuovo Cimento della Societa Italiana di Fisica B, Vol. 121, No. 10-11, 01.10.2006, p. 1253-1256.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Suzaku observation of X-ray afterglow

T2 - Spectral and temporal behaviors

AU - Yonetoku, D.

AU - Murakami, T.

AU - Kodaira, H.

AU - Okuno, S.

AU - Yoshinari, S.

AU - Abe, K.

AU - Angelini, L.

AU - Barthelmy, S.

AU - Gehrels, N.

AU - Ishikawa, N.

AU - Kaluzienski, L. J.

AU - Kawai, N.

AU - Kelley, R. L.

AU - Kinugasa, K.

AU - Kohmura, T.

AU - Kubota, K.

AU - Maeda, Y.

AU - Maeno, S.

AU - Murakami, H.

AU - Nakagawa, Y. E.

AU - Nakazawa, K.

AU - Nousek, John Andrew

AU - Onda, K.

AU - Reeves, J. N.

AU - Ricker, G.

AU - Sato, G.

AU - Sonoda, E.

AU - Suzuki, M.

AU - Takahashi, T.

AU - Tamagawa, T.

AU - Tashiro, M. S.

AU - Torii, K.

AU - Ueda, Y.

AU - Urata, Y.

AU - Yamaoka, K.

AU - Yamauchi, M.

AU - Yoshida, A.

PY - 2006/10/1

Y1 - 2006/10/1

N2 - We report about early X-ray afterglow observations of GRB 060105 by Swift and Suzaku. The Suzaku team commenced a pre-planned target of opportunity observation at 5.3 h after the Swift trigger. Following the prompt emission and successive very steep decay, a shallow decay was observed from T0 + 187 s to T0 + 1287s by Swift. After that, an extremely early steep decay was observed in T0 + (4 30) ks. The light curve flattened again and another steep decay from T0 + 50 ks to the end of Suzaku observations was observed. Both steep decays exhibited almost same decay indices of 2.3-2.4. This break time, if it is caused by a jet break, is the earliest case among X-ray afterglow observations, suggesting a very narrow jet opening angle is about 0.7 degree. The unique Suzaku/XIS data allow us to set very tight upper limits on emission line in this GRB. Using the reported pseudo-redshift of z = 4.0 ± 1.3. we set the upper limit on the equivalent width of iron emission line at a few eV.

AB - We report about early X-ray afterglow observations of GRB 060105 by Swift and Suzaku. The Suzaku team commenced a pre-planned target of opportunity observation at 5.3 h after the Swift trigger. Following the prompt emission and successive very steep decay, a shallow decay was observed from T0 + 187 s to T0 + 1287s by Swift. After that, an extremely early steep decay was observed in T0 + (4 30) ks. The light curve flattened again and another steep decay from T0 + 50 ks to the end of Suzaku observations was observed. Both steep decays exhibited almost same decay indices of 2.3-2.4. This break time, if it is caused by a jet break, is the earliest case among X-ray afterglow observations, suggesting a very narrow jet opening angle is about 0.7 degree. The unique Suzaku/XIS data allow us to set very tight upper limits on emission line in this GRB. Using the reported pseudo-redshift of z = 4.0 ± 1.3. we set the upper limit on the equivalent width of iron emission line at a few eV.

UR - http://www.scopus.com/inward/record.url?scp=34548241298&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548241298&partnerID=8YFLogxK

U2 - 10.1393/ncb/i2007-10243-8

DO - 10.1393/ncb/i2007-10243-8

M3 - Article

AN - SCOPUS:34548241298

VL - 121

SP - 1253

EP - 1256

JO - Nuovo Cimento della Societa Italiana di Fisica B

JF - Nuovo Cimento della Societa Italiana di Fisica B

SN - 1594-9982

IS - 10-11

ER -

Yonetoku D, Murakami T, Kodaira H, Okuno S, Yoshinari S, Abe K et al. Suzaku observation of X-ray afterglow: Spectral and temporal behaviors. Nuovo Cimento della Societa Italiana di Fisica B. 2006 Oct 1;121(10-11):1253-1256. https://doi.org/10.1393/ncb/i2007-10243-8