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 languageEnglish (US)
Pages (from-to)L119-L122
JournalAstrophysical Journal
Volume533
Issue number2 PART 2
StatePublished - Apr 20 2000

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field of view
gamma ray bursts
bursts
northern sky
energy
gamma rays
cycles
detectors
detector

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Atkins, R., Benbow, W., Berley, D., Chen, M. L., Coyne, D. G., Dingus, B. L., ... Yodh, G. B. (2000). Evidence for TeV emission from GRB 970417a. Astrophysical Journal, 533(2 PART 2), L119-L122.
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. ; Mcconnell, M. ; Mccullough, J. F. ; Mcenery, J. E. ; Miller, R. S. ; Mincer, A. I. ; Morales, M. F. ; Nemethy, P. ; Ryan, J. M. ; Shen, B. ; Shoup, A. ; Sinnis, C. ; Smith, A. J. ; Sullivan, G. W. ; Tumer, T. ; Wang, K. ; Wascko, M. O. ; Westerhoff, S. ; Williams, D. A. ; Yang, T. ; Yodh, G. B. / Evidence for TeV emission from GRB 970417a. In: Astrophysical Journal. 2000 ; Vol. 533, No. 2 PART 2. pp. L119-L122.
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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.",
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.}",
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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.

Evidence for TeV emission from GRB 970417a. / 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.; Mcconnell, M.; Mccullough, J. F.; Mcenery, J. E.; Miller, R. S.; Mincer, A. I.; Morales, M. F.; Nemethy, P.; Ryan, J. M.; Shen, B.; Shoup, A.; Sinnis, C.; Smith, A. J.; Sullivan, G. W.; Tumer, T.; Wang, K.; Wascko, M. O.; Westerhoff, S.; Williams, D. A.; Yang, T.; Yodh, G. B.

In: Astrophysical Journal, Vol. 533, No. 2 PART 2, 20.04.2000, p. L119-L122.

Research output: Contribution to journalArticle

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.

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.

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Atkins R, Benbow W, Berley D, Chen ML, Coyne DG, Dingus BL et al. Evidence for TeV emission from GRB 970417a. Astrophysical Journal. 2000 Apr 20;533(2 PART 2):L119-L122.