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Detection of Gamma Rays with E greater than 300 GeV From Markarian 501 |
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by: |
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Quinn, J. |
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Finley, J. P., et al |
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Connaughton, V. |
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Akerlof, C. W. |
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Biller, S. |
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Buckley, J. |
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Carter-Lewis, D. A. |
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Catanese, M. |
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Cawley, M. F. |
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Fegan, D. J. |
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The detection of gamma rays of energy greater than 300 |
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GeV from the BL Lacertae object Mrk 501 demonstrates that |
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extragalactic TeV emission is not unique to Mrk 421. |
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During 66 hr of observations between 1995 March and July |
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we measured an average flux of 8.1 /- 1.4 x 10(exp -12) |
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cm(exp -2)/s above 300 GeV, a flux that is only 20 |
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percent of the average Mrk 421 flux. The new gamma-ray |
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source has not been reported by the Compton Gamma Ray |
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Observatory as an emitter of gamma rays at lower |
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energies. There is evidence for variability on timescales |
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of days. |
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Date Published: 2011-05-23 00:21:17 |
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Identifier: nasa_techdoc_19960020410 |
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Item Size: 2048688 |
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Language: eng |
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Media Type: texts |
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# Topics |
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STELLAR CORONAS |
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STELLAR LUMINOSITY |
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EMISSION SPECTRA |
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O STARS |
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B STARS |
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STELLAR ACTIVITY |
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X RAY SOURCES |
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OPEN CLUSTERS |
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MAIN SEQUENCE STARS |
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STELLAR EVOLUTION |
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STELLAR MASS |
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ROSAT MISSION |
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SKY SURVEYS (ASTRONOMY) |
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X RAYS |
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# Collections |
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nasa_techdocs |
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# Uploaded by |
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@greg_williamson |
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