Evidence for TeV emission from GRB 970417a

R. Atkins; W. Benbow; D. Berley; M. L. Chen; D. G. Coyne; B. L. Dingus; D. E. Dorfan; R. W. Ellsworth; D. Evans; A. Falcone; L. Fleysher; R. Fleysher; G. Gisler; J. A. Goodman; T. J. Haines; C. M. Hoffman; S. Hugenberger; L. A. Kelley; I. Leonor; M. Mcconnell; J. F. Mccullough; J. E. Mcenery; R. S. Miller; A. I. Mincer; M. F. Morales; P. Nemethy; J. M. Ryan; B. Shen; A. Shoup; C. Sinnis; A. J. Smith; G. W. Sullivan; T. Tumer; K. Wang; M. O. Wascko; S. Westerhoff; D. A. Williams; T. Yang; G. B. Yodh

doi:10.1086/312629

Evidence for TeV emission from GRB 970417a

R. Atkins, W. Benbow, D. Berley, M. L. Chen, D. G. Coyne, B. L. Dingus, D. E. Dorfan, R. W. Ellsworth, D. Evans, A. Falcone, L. Fleysher, R. Fleysher, G. Gisler, J. A. Goodman, T. J. Haines, C. M. Hoffman, S. Hugenberger, L. A. Kelley, I. Leonor, M. McconnellJ. F. Mccullough, J. E. Mcenery, R. S. Miller, A. I. Mincer, M. F. Morales, P. Nemethy, J. M. Ryan, B. Shen, A. Shoup, C. Sinnis, A. J. Smith, G. W. Sullivan, T. Tumer, K. Wang, M. O. Wascko, S. Westerhoff, D. A. Williams, T. Yang, G. B. Yodh

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Abstract

Milagrito, a detector sensitive to very high energy gamma rays, monitored the northern sky from 1997 February through 1998 May. With a large field of view and a high duty cycle, this instrument was well suited to perform a search for TeV gamma-ray bursts (GRBs). We report on a search made for TeV counterparts to GRBs observed by BATSE. BATSE detected 54 GRBs within the field of view of Milagrito during this period. An excess of events coincident in time and space with one of these bursts, GRB 970417a, was observed by Milagrito. The excess has a chance probability of 2.8 × 10^-5 of being a fluctuation of the background. The probability for observing an excess at least this large from any of the 54 bursts is 1.5 × 10^-3. No significant correlations were detected from the other bursts.

Original language	English (US)
Pages (from-to)	L119-L122
Journal	Astrophysical Journal
Volume	533
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/312629
State	Published - Apr 20 2000
Externally published	Yes

Keywords

Gamma rays: bursts
Gamma rays: observations

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/312629

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Atkins, R., Benbow, W., Berley, D., Chen, M. L., Coyne, D. G., Dingus, B. L., Dorfan, D. E., Ellsworth, R. W., Evans, D., Falcone, A., Fleysher, L., Fleysher, R., Gisler, G., Goodman, J. A., Haines, T. J., Hoffman, C. M., Hugenberger, S., Kelley, L. A., Leonor, I., ... Yodh, G. B. (2000). Evidence for TeV emission from GRB 970417a. Astrophysical Journal, 533(2 PART 2), L119-L122. https://doi.org/10.1086/312629

Atkins, R, Benbow, W, Berley, D, Chen, ML, Coyne, DG, Dingus, BL, Dorfan, DE, Ellsworth, RW, Evans, D, Falcone, A, Fleysher, L, Fleysher, R, Gisler, G, Goodman, JA, Haines, TJ, Hoffman, CM, Hugenberger, S, Kelley, LA, Leonor, I, Mcconnell, M, Mccullough, JF, Mcenery, JE, Miller, RS, Mincer, AI, Morales, MF, Nemethy, P, Ryan, JM, Shen, B, Shoup, A, Sinnis, C, Smith, AJ, Sullivan, GW, Tumer, T, Wang, K, Wascko, MO, Westerhoff, S, Williams, DA, Yang, T & Yodh, GB 2000, 'Evidence for TeV emission from GRB 970417a', Astrophysical Journal, vol. 533, no. 2 PART 2, pp. L119-L122. https://doi.org/10.1086/312629

@article{03487ec83a3b4b06b9cc188028ff392e,

title = "Evidence for TeV emission from GRB 970417a",

abstract = "Milagrito, a detector sensitive to very high energy gamma rays, monitored the northern sky from 1997 February through 1998 May. With a large field of view and a high duty cycle, this instrument was well suited to perform a search for TeV gamma-ray bursts (GRBs). We report on a search made for TeV counterparts to GRBs observed by BATSE. BATSE detected 54 GRBs within the field of view of Milagrito during this period. An excess of events coincident in time and space with one of these bursts, GRB 970417a, was observed by Milagrito. The excess has a chance probability of 2.8 × 10-5 of being a fluctuation of the background. The probability for observing an excess at least this large from any of the 54 bursts is 1.5 × 10-3. No significant correlations were detected from the other bursts.",

keywords = "Gamma rays: bursts, Gamma rays: observations",

author = "R. Atkins and W. Benbow and D. Berley and Chen, {M. L.} and Coyne, {D. G.} and Dingus, {B. L.} and Dorfan, {D. E.} and Ellsworth, {R. W.} and D. Evans and A. Falcone and L. Fleysher and R. Fleysher and G. Gisler and Goodman, {J. A.} and Haines, {T. J.} and Hoffman, {C. M.} and S. Hugenberger and Kelley, {L. A.} and I. Leonor and M. Mcconnell and Mccullough, {J. F.} and Mcenery, {J. E.} and Miller, {R. S.} and Mincer, {A. I.} and Morales, {M. F.} and P. Nemethy and Ryan, {J. M.} and B. Shen and A. Shoup and C. Sinnis and Smith, {A. J.} and Sullivan, {G. W.} and T. Tumer and K. Wang and Wascko, {M. O.} and S. Westerhoff and Williams, {D. A.} and T. Yang and Yodh, {G. B.}",

note = "Funding Information: Many people helped bring Milagrito to fruition. In particular, we acknowledge the efforts of Scott DeLay, Neil Thompson, and Michael Schneider. This work was supported in part by the National Science Foundation, the US Department of Energy (Offices of High-Energy Physics and Nuclear Physics), Los Alamos National Laboratory, the University of California, and the Institute of Geophysics and Planetary Physics.",

year = "2000",

month = apr,

day = "20",

doi = "10.1086/312629",

language = "English (US)",

volume = "533",

pages = "L119--L122",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 PART 2",

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TY - JOUR

T1 - Evidence for TeV emission from GRB 970417a

AU - Atkins, R.

AU - Benbow, W.

AU - Berley, D.

AU - Chen, M. L.

AU - Coyne, D. G.

AU - Dingus, B. L.

AU - Dorfan, D. E.

AU - Ellsworth, R. W.

AU - Evans, D.

AU - Falcone, A.

AU - Fleysher, L.

AU - Fleysher, R.

AU - Gisler, G.

AU - Goodman, J. A.

AU - Haines, T. J.

AU - Hoffman, C. M.

AU - Hugenberger, S.

AU - Kelley, L. A.

AU - Leonor, I.

AU - Mcconnell, M.

AU - Mccullough, J. F.

AU - Mcenery, J. E.

AU - Miller, R. S.

AU - Mincer, A. I.

AU - Morales, M. F.

AU - Nemethy, P.

AU - Ryan, J. M.

AU - Shen, B.

AU - Shoup, A.

AU - Sinnis, C.

AU - Smith, A. J.

AU - Sullivan, G. W.

AU - Tumer, T.

AU - Wang, K.

AU - Wascko, M. O.

AU - Westerhoff, S.

AU - Williams, D. A.

AU - Yang, T.

AU - Yodh, G. B.

N1 - Funding Information: Many people helped bring Milagrito to fruition. In particular, we acknowledge the efforts of Scott DeLay, Neil Thompson, and Michael Schneider. This work was supported in part by the National Science Foundation, the US Department of Energy (Offices of High-Energy Physics and Nuclear Physics), Los Alamos National Laboratory, the University of California, and the Institute of Geophysics and Planetary Physics.

PY - 2000/4/20

Y1 - 2000/4/20

N2 - Milagrito, a detector sensitive to very high energy gamma rays, monitored the northern sky from 1997 February through 1998 May. With a large field of view and a high duty cycle, this instrument was well suited to perform a search for TeV gamma-ray bursts (GRBs). We report on a search made for TeV counterparts to GRBs observed by BATSE. BATSE detected 54 GRBs within the field of view of Milagrito during this period. An excess of events coincident in time and space with one of these bursts, GRB 970417a, was observed by Milagrito. The excess has a chance probability of 2.8 × 10-5 of being a fluctuation of the background. The probability for observing an excess at least this large from any of the 54 bursts is 1.5 × 10-3. No significant correlations were detected from the other bursts.

AB - Milagrito, a detector sensitive to very high energy gamma rays, monitored the northern sky from 1997 February through 1998 May. With a large field of view and a high duty cycle, this instrument was well suited to perform a search for TeV gamma-ray bursts (GRBs). We report on a search made for TeV counterparts to GRBs observed by BATSE. BATSE detected 54 GRBs within the field of view of Milagrito during this period. An excess of events coincident in time and space with one of these bursts, GRB 970417a, was observed by Milagrito. The excess has a chance probability of 2.8 × 10-5 of being a fluctuation of the background. The probability for observing an excess at least this large from any of the 54 bursts is 1.5 × 10-3. No significant correlations were detected from the other bursts.

KW - Gamma rays: bursts

KW - Gamma rays: observations

UR - http://www.scopus.com/inward/record.url?scp=0034689802&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034689802&partnerID=8YFLogxK

U2 - 10.1086/312629

DO - 10.1086/312629

M3 - Article

AN - SCOPUS:0034689802

SN - 0004-637X

VL - 533

SP - L119-L122

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

Evidence for TeV emission from GRB 970417a

Abstract

Keywords

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