GRB 010921: Localization and observations by the high energy transient explorer satellite

G. Ricker; K. Hurley; D. Lamb; S. Woosley; J. L. Atteia; N. Kawai; R. Vanderspek; G. Crew; J. Doty; J. Villasenor; G. Prigozhin; G. Monnelly; N. Butler; M. Matsuoka; Y. Shirasaki; T. Tamagawa; K. Torii; T. Sakamoto; A. Yoshida; E. Fenimore; M. Galassi; T. Tavenner; T. Donaghy; C. Graziani; M. Boer; J. P. Dezalay; M. Niel; J. F. Olive; G. Vedrenne; T. Cline; J. G. Jernigan; A. Levine; F. Martel; E. Morgan; J. Braga; R. Manchanda; G. Pizzichini; K. Takagishi; M. Yamauchi

doi:10.1086/341337

GRB 010921: Localization and observations by the high energy transient explorer satellite

G. Ricker, K. Hurley, D. Lamb, S. Woosley, J. L. Atteia, N. Kawai, R. Vanderspek, G. Crew, J. Doty, J. Villasenor, G. Prigozhin, G. Monnelly, N. Butler, M. Matsuoka, Y. Shirasaki, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. FenimoreM. Galassi, T. Tavenner, T. Donaghy, C. Graziani, M. Boer, J. P. Dezalay, M. Niel, J. F. Olive, G. Vedrenne, T. Cline, J. G. Jernigan, A. Levine, F. Martel, E. Morgan, J. Braga, R. Manchanda, G. Pizzichini, K. Takagishi, M. Yamauchi

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Abstract

On 2001 September 21 at 05:15:50.56 UT, the French Gamma Telescope (FREGATE) on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst was also seen by the X-detector on the Wide-field X-ray Monitor (WXM) instrument and was therefore well localized in the X-direction; however, the burst was outside the fully coded field of view of the WXM Y-detector, and therefore information on the Y-direction of the burst was limited. Cross-correlation of the HETE and Ulysses time histories yielded an Interplanetary Network (IPN) annulus that crosses the HETE error strip at an ∼45° angle. The intersection of the HETE error strip and the IPN annulus produces a diamond-shaped error region for the location of the burst having an area of 310 arcmin². Based on the FREGATE and WXM light curves, the duration of the burst is characterized by t₉₀ = 34.2 s in the WXM 4-25 keV energy range, and 23.8 and 21.8 s in the FREGATE 6-40 and 32-400 keV energy ranges, respectively. The fluence of the burst in these same energy ranges is 4.8 × 10^-6, 5.5 × 10 ^-6, and 11.4 × 10^-6 ergs cm^-2, respectively. Subsequent optical and radio observations by ground-based observers have identified the afterglow of GRB 010921 and determined an apparent redshift of z = 0.450.

Original language	English (US)
Pages (from-to)	L127-L130
Journal	Astrophysical Journal
Volume	571
Issue number	2 II
DOIs	https://doi.org/10.1086/341337
State	Published - Jun 1 2002
Externally published	Yes

Keywords

Gamma rays: bursts

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/341337

Cite this

Ricker, G., Hurley, K., Lamb, D., Woosley, S., Atteia, J. L., Kawai, N., Vanderspek, R., Crew, G., Doty, J., Villasenor, J., Prigozhin, G., Monnelly, G., Butler, N., Matsuoka, M., Shirasaki, Y., Tamagawa, T., Torii, K., Sakamoto, T., Yoshida, A., ... Yamauchi, M. (2002). GRB 010921: Localization and observations by the high energy transient explorer satellite. Astrophysical Journal, 571(2 II), L127-L130. https://doi.org/10.1086/341337

Ricker, G, Hurley, K, Lamb, D, Woosley, S, Atteia, JL, Kawai, N, Vanderspek, R, Crew, G, Doty, J, Villasenor, J, Prigozhin, G, Monnelly, G, Butler, N, Matsuoka, M, Shirasaki, Y, Tamagawa, T, Torii, K, Sakamoto, T, Yoshida, A, Fenimore, E, Galassi, M, Tavenner, T, Donaghy, T, Graziani, C, Boer, M, Dezalay, JP, Niel, M, Olive, JF, Vedrenne, G, Cline, T, Jernigan, JG, Levine, A, Martel, F, Morgan, E, Braga, J, Manchanda, R, Pizzichini, G, Takagishi, K & Yamauchi, M 2002, 'GRB 010921: Localization and observations by the high energy transient explorer satellite', Astrophysical Journal, vol. 571, no. 2 II, pp. L127-L130. https://doi.org/10.1086/341337

@article{76f3aedb34ff4cb28b312aa3c03704bc,

title = "GRB 010921: Localization and observations by the high energy transient explorer satellite",

abstract = "On 2001 September 21 at 05:15:50.56 UT, the French Gamma Telescope (FREGATE) on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst was also seen by the X-detector on the Wide-field X-ray Monitor (WXM) instrument and was therefore well localized in the X-direction; however, the burst was outside the fully coded field of view of the WXM Y-detector, and therefore information on the Y-direction of the burst was limited. Cross-correlation of the HETE and Ulysses time histories yielded an Interplanetary Network (IPN) annulus that crosses the HETE error strip at an ∼45° angle. The intersection of the HETE error strip and the IPN annulus produces a diamond-shaped error region for the location of the burst having an area of 310 arcmin2. Based on the FREGATE and WXM light curves, the duration of the burst is characterized by t90 = 34.2 s in the WXM 4-25 keV energy range, and 23.8 and 21.8 s in the FREGATE 6-40 and 32-400 keV energy ranges, respectively. The fluence of the burst in these same energy ranges is 4.8 × 10-6, 5.5 × 10 -6, and 11.4 × 10-6 ergs cm-2, respectively. Subsequent optical and radio observations by ground-based observers have identified the afterglow of GRB 010921 and determined an apparent redshift of z = 0.450.",

keywords = "Gamma rays: bursts",

author = "G. Ricker and K. Hurley and D. Lamb and S. Woosley and Atteia, {J. L.} and N. Kawai and R. Vanderspek and G. Crew and J. Doty and J. Villasenor and G. Prigozhin and G. Monnelly and N. Butler and M. Matsuoka and Y. Shirasaki and T. Tamagawa and K. Torii and T. Sakamoto and A. Yoshida and E. Fenimore and M. Galassi and T. Tavenner and T. Donaghy and C. Graziani and M. Boer and Dezalay, {J. P.} and M. Niel and Olive, {J. F.} and G. Vedrenne and T. Cline and Jernigan, {J. G.} and A. Levine and F. Martel and E. Morgan and J. Braga and R. Manchanda and G. Pizzichini and K. Takagishi and M. Yamauchi",

note = "Funding Information: The HETE mission is supported in the US by NASA contract NASW-4690; in Japan, in part by the Ministry of Education, Culture, Sports, Science, and Technology Grant-in-Aid 13440063; and in France, by CNES contract 793-01-8479. K. Hurley is grateful for Ulysses support under contract JPL 958059 and for HETE support under contract MIT-SC-R-293291. G. Pizzichini acknowledges support by the Italian Space Agency.",

year = "2002",

month = jun,

day = "1",

doi = "10.1086/341337",

language = "English (US)",

volume = "571",

pages = "L127--L130",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 II",

}

TY - JOUR

T1 - GRB 010921

T2 - Localization and observations by the high energy transient explorer satellite

AU - Ricker, G.

AU - Hurley, K.

AU - Lamb, D.

AU - Woosley, S.

AU - Atteia, J. L.

AU - Kawai, N.

AU - Vanderspek, R.

AU - Crew, G.

AU - Doty, J.

AU - Villasenor, J.

AU - Prigozhin, G.

AU - Monnelly, G.

AU - Butler, N.

AU - Matsuoka, M.

AU - Shirasaki, Y.

AU - Tamagawa, T.

AU - Torii, K.

AU - Sakamoto, T.

AU - Yoshida, A.

AU - Fenimore, E.

AU - Galassi, M.

AU - Tavenner, T.

AU - Donaghy, T.

AU - Graziani, C.

AU - Boer, M.

AU - Dezalay, J. P.

AU - Niel, M.

AU - Olive, J. F.

AU - Vedrenne, G.

AU - Cline, T.

AU - Jernigan, J. G.

AU - Levine, A.

AU - Martel, F.

AU - Morgan, E.

AU - Braga, J.

AU - Manchanda, R.

AU - Pizzichini, G.

AU - Takagishi, K.

AU - Yamauchi, M.

N1 - Funding Information: The HETE mission is supported in the US by NASA contract NASW-4690; in Japan, in part by the Ministry of Education, Culture, Sports, Science, and Technology Grant-in-Aid 13440063; and in France, by CNES contract 793-01-8479. K. Hurley is grateful for Ulysses support under contract JPL 958059 and for HETE support under contract MIT-SC-R-293291. G. Pizzichini acknowledges support by the Italian Space Agency.

PY - 2002/6/1

Y1 - 2002/6/1

N2 - On 2001 September 21 at 05:15:50.56 UT, the French Gamma Telescope (FREGATE) on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst was also seen by the X-detector on the Wide-field X-ray Monitor (WXM) instrument and was therefore well localized in the X-direction; however, the burst was outside the fully coded field of view of the WXM Y-detector, and therefore information on the Y-direction of the burst was limited. Cross-correlation of the HETE and Ulysses time histories yielded an Interplanetary Network (IPN) annulus that crosses the HETE error strip at an ∼45° angle. The intersection of the HETE error strip and the IPN annulus produces a diamond-shaped error region for the location of the burst having an area of 310 arcmin2. Based on the FREGATE and WXM light curves, the duration of the burst is characterized by t90 = 34.2 s in the WXM 4-25 keV energy range, and 23.8 and 21.8 s in the FREGATE 6-40 and 32-400 keV energy ranges, respectively. The fluence of the burst in these same energy ranges is 4.8 × 10-6, 5.5 × 10 -6, and 11.4 × 10-6 ergs cm-2, respectively. Subsequent optical and radio observations by ground-based observers have identified the afterglow of GRB 010921 and determined an apparent redshift of z = 0.450.

AB - On 2001 September 21 at 05:15:50.56 UT, the French Gamma Telescope (FREGATE) on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst was also seen by the X-detector on the Wide-field X-ray Monitor (WXM) instrument and was therefore well localized in the X-direction; however, the burst was outside the fully coded field of view of the WXM Y-detector, and therefore information on the Y-direction of the burst was limited. Cross-correlation of the HETE and Ulysses time histories yielded an Interplanetary Network (IPN) annulus that crosses the HETE error strip at an ∼45° angle. The intersection of the HETE error strip and the IPN annulus produces a diamond-shaped error region for the location of the burst having an area of 310 arcmin2. Based on the FREGATE and WXM light curves, the duration of the burst is characterized by t90 = 34.2 s in the WXM 4-25 keV energy range, and 23.8 and 21.8 s in the FREGATE 6-40 and 32-400 keV energy ranges, respectively. The fluence of the burst in these same energy ranges is 4.8 × 10-6, 5.5 × 10 -6, and 11.4 × 10-6 ergs cm-2, respectively. Subsequent optical and radio observations by ground-based observers have identified the afterglow of GRB 010921 and determined an apparent redshift of z = 0.450.

KW - Gamma rays: bursts

UR - http://www.scopus.com/inward/record.url?scp=0242708666&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0242708666&partnerID=8YFLogxK

U2 - 10.1086/341337

DO - 10.1086/341337

M3 - Article

AN - SCOPUS:0242708666

SN - 0004-637X

VL - 571

SP - L127-L130

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

GRB 010921: Localization and observations by the high energy transient explorer satellite

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