Constraints on very high energy gamma-ray emission from gamma-ray bursts

R. Atkins, W. Benbow, D. Berley, E. Blaufuss, D. G. Coyne, T. DeYoung, B. L. Dingus, D. E. Dorfan, R. W. Ellsworth, L. Fleysher, R. Fleysher, M. M. Gonzalez, J. A. Goodman, E. Hays, C. M. Hoffman, L. A. Kelley, C. P. Lansdell, J. T. Linnemann, J. E. McEnery, A. I. MincerM. F. Morales, P. Nemethy, D. Noyes, J. M. Ryan, F. W. Samuelson, P. M. Saz Parkinson, A. Shoup, G. Sinnis, A. J. Smith, G. W. Sullivan, D. A. Williams, M. E. Wilson, X. W. Xu, G. B. Yodh

Research output: Contribution to journalArticle

53 Scopus citations

Abstract

The Milagro Gamma-Ray Observatory employs a water Cerenkov detector to observe extensive air showers produced by high-energy particles interacting in the Earth's atmosphere. Milagro has a wide field of view and high duty cycle, monitoring the northern sky almost continuously in the 100 GeV to 100 TeV energy range. Milagro is thus uniquely capable of searching for very high energy emission from gamma-ray bursts (GRBs) during the prompt emission phase. Detection of > 100 GeV counterparts would place powerful constraints on GRB mechanisms. Twenty-five satellite-triggered GRBs occurred within the field of view of Milagro between 2000 January and 2001 December. We have searched for counterparts to these GRBs and found no significant emission from any of the burst positions. Due to the absorption of high-energy gamma rays by the extragalactic background light, detections are only expected to be possible for redshifts less than ∼0.5. Three of the GRBs studied have measured redshifts. GRB 010921 has a redshift low enough (0.45) to allow an upper limit on the fluence to place an observational constraint on potential GRB models.

Original languageEnglish (US)
Pages (from-to)996-1002
Number of pages7
JournalAstrophysical Journal
Volume630
Issue number2 I
DOIs
StatePublished - Sep 10 2005
Externally publishedYes

Keywords

  • Gamma rays: bursts
  • Gamma rays: observations

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Constraints on very high energy gamma-ray emission from gamma-ray bursts'. Together they form a unique fingerprint.

  • Cite this

    Atkins, R., Benbow, W., Berley, D., Blaufuss, E., Coyne, D. G., DeYoung, T., Dingus, B. L., Dorfan, D. E., Ellsworth, R. W., Fleysher, L., Fleysher, R., Gonzalez, M. M., Goodman, J. A., Hays, E., Hoffman, C. M., Kelley, L. A., Lansdell, C. P., Linnemann, J. T., McEnery, J. E., ... Yodh, G. B. (2005). Constraints on very high energy gamma-ray emission from gamma-ray bursts. Astrophysical Journal, 630(2 I), 996-1002. https://doi.org/10.1086/432501