NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Detection of TeV photons from the active galaxy Markarian 421The detection of TeV energy photons from the giant elliptical galaxy Markarian 421 using the Whipple Observatory gamma-ray telescope is reported. The signal has a statistical significance of 6 sigma above background and the flux above 0.5 TeV is 0.3 of that from the Crab Nebula. The source location agrees with the position of Mk 421 within the angular uncertainty of the Whipple instrument.
Document ID
19920067731
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Punch, M.
(Whipple Observatory, Amado, AZ; University College, Dublin, Republic of Ireland, United States)
Akerlof, C. W.
(Michigan, University Ann Arbor, United States)
Cawley, M. F.
(St. Patrick's College Maynooth, Republic of Ireland, United States)
Chantell, M.
(Whipple Observatory Amado, AZ, United States)
Fegan, D. J.
(University College Dublin, Republic of Ireland, United States)
Fennell, S.
(Whipple Observatory, Amado, AZ; University College, Dublin, Republic of Ireland, United States)
Gaidos, J. A.
(Purdue University West Lafayette, IN, United States)
Hagan, J.
(University College Dublin, Republic of Ireland, United States)
Hillas, A. M.
(Leeds, University United Kingdom)
Jiang, Y.
(Whipple Observatory Amado, AZ, United States)
Date Acquired
August 15, 2013
Publication Date
August 6, 1992
Publication Information
Publication: Nature
Volume: 358
Issue: 6386,
ISSN: 0028-0836
Subject Category
Space Radiation
Accession Number
92A50355
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available