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Showing papers by "Peter Nemethy published in 2001"

Journal Article•DOI•
A Survey of the Northern Sky for TeV Point Sources

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Kelin Wang1, R. Atkins2, Wystan Benbow3, D. Berley4, M. L. Chen4, M. L. Chen5, D. G. Coyne3, Brenda Dingus2, D. E. Dorfan3, R. W. Ellsworth6, A. Falcone7, L. Fleysher8, R. Fleysher8, Galen Gisler9, J. A. Goodman4, Todd Haines9, C. M. Hoffman9, S. Hugenberger10, L. A. Kelley3, I. Leonor10, Mark L. McConnell7, J. F. McCullough3, J. E. McEnery2, Richard Miller11, Richard Miller9, Allen Mincer8, Miguel F. Morales3, Peter Nemethy8, James M. Ryan7, Frank W. Samuelson9, B. C. Shen1, A. Shoup10, G. Sinnis9, A. J. Smith4, G. W. Sullivan4, O. T. Tumer1, M. O. Wascko11, M. O. Wascko1, S. Westerhoff3, S. Westerhoff12, David A. Williams3, T. Yang3, G. B. Yodh10 •
University of California, Riverside1, University of Wisconsin-Madison2, University of California, Santa Cruz3, University of Maryland, College Park4, Brookhaven National Laboratory5, George Mason University6, University of New Hampshire7, New York University8, Los Alamos National Laboratory9, University of California, Irvine10, Louisiana State University11, Columbia University12
10 Sep 2001-The Astrophysical Journal
TL;DR: In this paper, the Milagrito air-shower particle detector was used to search for steady TeV point sources in the northern sky with data from 3 × 109 events collected from 1997 February to 1998 May.
Abstract: A search for steady TeV point sources anywhere in the northern sky has been made with data from the Milagrito air-shower particle detector. Over 3 × 109 events, collected from 1997 February to 1998 May, have been used in this study. No statistically significant excess above the background from the isotropic flux of cosmic rays was found for any direction of the sky with declination between -5° and 717. Upper limits are derived for the photon flux above 1 TeV from any steady point source in the northern sky.

15 citations

Proceedings Article•DOI•
Evidence for TeV emission from GRB 970417a

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Julie McEnery, R. W. Atkins, Wystan Benbow, D. Berley, M. L. Chen, D. G. Coyne, Brenda Dingus, D. E. Dorfan, R. W. Ellsworth, D. Evans, A. D. Falcone, L. Fleysher, R. Fleysher, Galen Gisler, J. A. Goodman, Todd Haines, C. M. Hoffman, S. Hugenberger, L. A. Kelley, I. Leonor, Mark L. McConnell, J. F. McCullough, Richard Miller, Allen Mincer, Miguel F. Morales, Peter Nemethy, James M. Ryan, B. C. Shen, A. L. Shoup, C. Sinnis, A. J. S. Smith, G. W. Sullivan, Tumay O. Tumer, Kelin Wang, M. O. Wascko, S. Westerhoff, David A. Williams, T. Yang, G. B. Yodh 
19 Apr 2001
TL;DR: A search made for TeV counterparts to GRBs observed by BATSE detected 54 GRBs within the field of view of Milagrito, and an excess of events coincident in time and space with one of these bursts, GRB 970417a, was observed by Milaghetti.
Abstract: 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-ray bursts. BATSE detected 54 GRBs within the field of view of Milagrito during this period. This paper describes the results of an 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 at least this significance in any of these bursts is 1.5×10−3.

3 citations