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2000AIPC..510..543M
First results of a study of TeV emission from GRBs in Milagrito
Miller, R. S. ( Los Alamos National Laboratory, Los Alamos, New Mexico 87545; University of New Hampshire, Durham, New Hampshire 03824 ); Atkins, R. ( University of Utah, Salt Lake City, Utah 84112 ); Benbow, W. ( University of California, Santa Cruz, California 95064 ); Berley, D. ( University of Maryland, College Park, Maryland 20742 ); Chen, M. L. ( University of Maryland, College Park, Maryland 20742 ); Coyne, D. G. ( University of California, Santa Cruz, California 95064 ); Dingus, B. L. ( University of Utah, Salt Lake City, Utah 84112 ); Dorfan, D. E. ( University of California, Santa Cruz, California 95064 ); Ellsworth, R. W. ( George Mason University, Fairfax, Virginia 22030 ); Evans, D. ( University of Maryland, College Park, Maryland 20742 ); Falcone, A. ( University of New Hampshire, Durham, New Hampshire 03824 ); Fleysher, L. ( New York University, New York, New York 10003 ); Fleysher, R. ( New York University, New York, New York 10003 ); Gisler, G. ( Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ); Goodman, J. A. ( University of Maryland, College Park, Maryland 20742 ); Haines, T. J. ( Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ); Hoffman, C. M. ( Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ); Hugenberger, S. ( University of California, Irvine, California 92697 ); Kelley, L. A. ( University of California, Santa Cruz, California 95064 ); Leonor, I. ( University of California, Irvine, California 92697 ); McConnell, M. ( University of New Hampshire, Durham, New Hampshire 03824 ); McCullough, J. F. ( University of California, Santa Cruz, California 95064 ); McEnery, J. E. ( University of Utah, Salt Lake City, Utah 84112 ); Mincer, A. I. ( New York University, New York, New York 10003 ); Morales, M. F. ( University of California, Santa Cruz, California 95064 ); Nemethy, P. ( New York University, New York, New York 10003 ); Ryan, J. M. ( University of New Hampshire, Durham, New Hampshire 03824 ); Shen, B. ( University of California, Riverside, California 92521 ); Shoup, A. ( University of California, Irvine, California 92697 ); Sinnis, C. ( Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ); Smith, A. J. ( University of California, Riverside, California 92521 ); Sullivan, G. W. ( University of Maryland, College Park, Maryland 20742 ); Tumer, T. ( University of California, Riverside, California 92521 ); Wang, K. ( University of California, Riverside, California 92521 ); Wascko, M. O. ( University of California, Riverside, California 92521 ); Westerhoff, S. ( University of California, Santa Cruz, California 95064 ); Williams, D. A. ( University of California, Santa Cruz, California 95064 ); Yang, T. ( University of California, Santa Cruz, California 95064 ); Yodh, G. B. ( University of California, Irvine, California 92697 ) and 29 coauthors show affiliations
THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 543-547 (2000).
Published in Apr 2000
Milagrito, a detector sensitive to γ-rays at TeV energies, monitored the northern sky during the period February 1997 through May 1998. With a large field of view and high duty cycle, this instrument was used to perform a search for TeV counterparts to γ-rays bursts. Within the Milagrito field of view 54 γ-ray bursts at keV energies were observed by the Burst And Transient Satellite Experiment (BATSE) aboard the Compton Gamma-Ray Observatory. This paper describes the results of a preliminary analysis to search for TeV emission correlated with BATSE detected bursts. Milagrito detected an excess of events coincident both spatially and temporally with GRB 970417a, with chance probability 2.8×10-5 within the BATSE error radius. No other significant correlations were detected. Since 54 bursts were examined the chance probability of observing an excess with this significance in any of these bursts is 1.5×10-3. The statistical aspects and physical implications of this result are discussed. .
Keywords:
Free Keywords: 95.55.Ka; 95.85.Pw; 98.70.Rz; X- and gamma-ray telescopes and instrumentation; gamma-ray; gamma-ray bursts; gamma-ray sources
PACS Codes: 95.55.Ka; 95.85.Pw; 98.70.Rz
PACS: X- and gamma-ray telescopes and instrumentation; gamma-ray; gamma-ray bursts; gamma-ray sources
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