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10 papers · 2 filters
Discovery of >350 GeV Gamma Rays from the BL Lacertae Object 1ES 2344+514
M. Catanese, C. W. Akerlof, H. M. Badran +31
We present the discovery of >350 GeV gamma-ray emission from the BL Lacertae object 1ES 2344+514 with the Whipple Observatory 10m gamma-ray telescope. This is the third BL Lac obje…
Radio and Optical Follow-up Observations and Improved IPN Position of GRB 970111
T. J. Galama, P. J. Groot, R. G. Strom +12
We report on Westerbork 840 MHz, 1.4 and 5 GHz radio observations of the improved IPN-WFC error box of the gamma-ray burst GRB 970111, between 26.4 hours and 120 days after the eve…
Multiwavelength Observations of a Flare from Markarian 501
M. Catanese, S. M. Bradbury, A. C. Breslin +23
We present multiwavelength observations of the BL Lacertae object Markarian 501 (Mrk 501) in 1997 between April 8 and April 19. Evidence of correlated variability is seen in very h…
Spectrum of TeV Gamma-Rays from the Crab Nebula
D. A. Carter-Lewis, S. Biller, P. J. Boyle +24
The Crab Nebula has become established as the standard candle for TeV gamma-ray astronomy using the atmospheric Cherenkov technique. No evidence for variability has been seen. The…
Very High Energy Observations of PSR B1951+32
R. Srinivasan, P. J. Boyle, J. H. Buckley +24
PSR B1951+32 is a gamma-ray pulsar detected by the Energetic Gamma Ray Experiment Telescope (EGRET) and identified with the 39.5 ms radio pulsar in the supernova remnant CTB 80. Th…
TeV Observations of the Variability and Spectrum of Markarian 501
J. Quinn, I. H. Bond, P. J. Boyle +27
Markarian 501 is only the second extragalactic source to be detected with high statistical certainty at TeV energies; it is similar in many ways to Markarian 421. The Whipple Obser…