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dc.contributor.author
Acciari, V. A.  
dc.contributor.author
Arlen, T.  
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Aune, T.  
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Benbow, W.  
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Bird, R.  
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Bouvier, A.  
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Bradbury, S. M.  
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Buckley, J. H.  
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Bugaev, V.  
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de la Calle Perez, I.  
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Carter Lewis, D. A.  
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Cesarini, A.  
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Ciupik, L.  
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Collins Hughes, E.  
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Connolly, M. P.  
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Cui, W.  
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Duke, C.  
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Dumm, J.  
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Falcone, A.  
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Federici, S.  
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Fegan, D. J.  
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Fegan, S. J.  
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Finley, J. P.  
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Finnegan, G.  
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Fortson, L.  
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Gaidos, J.  
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Galante, N.  
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Gall, D.  
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Pichel, Ana Carolina  
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Rovero, Adrian Carlos  
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The Veritas Collaboration  
dc.date.available
2017-08-01T18:19:35Z  
dc.date.issued
2014-02  
dc.identifier.citation
Acciari, V. A.; Arlen, T.; Aune, T.; Benbow, W.; Bird, R.; et al.; Observation of Markarian 421 in TeV gamma rays over a 14-year time span; Elsevier Science; Astroparticle Physics; 54; 2-2014; 1-10  
dc.identifier.issn
0927-6505  
dc.identifier.uri
http://hdl.handle.net/11336/21742  
dc.description.abstract
The variability of the blazar Markarian 421 in TeV gamma rays over a 14-year time period has been explored with the Whipple 10 m telescope. It is shown that the dynamic range of its flux variations is large and similar to that in X-rays. A correlation between the X-ray and TeV energy bands is observed during some bright flares and when the complete data sets are binned on long timescales. The main database consists of 878.4 hours of observation with the Whipple telescope, spread over 783 nights. The peak energy response of the telescope was 400 GeV with 20% uncertainty. This is the largest database of any TeV-emitting active galactic nucleus (AGN) and hence was used to explore the variability profile of Markarian 421. The time-averaged flux from Markarian 421 over this period was 0.446$pm$0.008 Crab flux units. The flux exceeded 10 Crab flux units on three separate occasions. For the 2000-2001 season the average flux reached 1.86 Crab units, while in the 1996-1997 season the average flux was only 0.23 Crab units.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Agn  
dc.subject
Tev Gamma Rays  
dc.subject
Markarian 421  
dc.subject.classification
Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Observation of Markarian 421 in TeV gamma rays over a 14-year time span  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-07-26T18:15:19Z  
dc.journal.volume
54  
dc.journal.pagination
1-10  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Acciari, V. A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos  
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Fil: Arlen, T.. University of California; Estados Unidos  
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Fil: Aune, T.. University of California; Estados Unidos  
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Fil: Benbow, W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos  
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Fil: Bird, R.. University College Dublin; Irlanda  
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Fil: Bouvier, A.. University of California; Estados Unidos  
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Fil: Bradbury, S. M.. University of Leeds; Reino Unido  
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Fil: Buckley, J. H.. University of Washington; Estados Unidos  
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Fil: Bugaev, V.. University of Washington; Estados Unidos  
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Fil: de la Calle Perez, I.. European Space Astronomy Center; España  
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Fil: Carter Lewis, D. A.. University of Iowa; Estados Unidos  
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Fil: Cesarini, A.. National University of Ireland Galway; Irlanda  
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Fil: Ciupik, L.. Adler Planetarium and Astronomy Museum; Estados Unidos  
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Fil: Collins Hughes, E.. University College Dublin; Irlanda  
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Fil: Connolly, M. P.. National University of Ireland Galway; Irlanda  
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Fil: Cui, W.. Purdue University; Estados Unidos  
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Fil: Duke, C.. Grinnell College; Estados Unidos  
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Fil: Dumm, J.. University Of Minnesota; Estados Unidos  
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Fil: Falcone, A.. State University Of Pennsylvania; Estados Unidos  
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Fil: Federici, S.. University of Potsdam; Alemania  
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Fil: Fegan, D. J.. University College Dublin; Irlanda  
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Fil: Fegan, S. J.. University College Dublin; Irlanda  
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Fil: Finley, J. P.. Purdue University; Estados Unidos  
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Fil: Finnegan, G.. University of Utah; Estados Unidos  
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Fil: Fortson, L.. University Of Minnesota; Estados Unidos  
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Fil: Gaidos, J.. Purdue University; Estados Unidos  
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Fil: Galante, N.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos  
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Fil: Gall, D.. University of Iowa; Estados Unidos  
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Fil: Pichel, Ana Carolina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina  
dc.description.fil
Fil: Rovero, Adrian Carlos. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina  
dc.description.fil
Fil: The Veritas Collaboration.  
dc.journal.title
Astroparticle Physics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0927650513001552  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.astropartphys.2013.10.004  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1310.8150