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dc.contributor.author
Archer, A.
dc.contributor.author
Benbow, W.
dc.contributor.author
Bird, R.
dc.contributor.author
Bourbeau, E.
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Buchovecky, M.
dc.contributor.author
Buckley, J. H.
dc.contributor.author
Bugaev, V.
dc.contributor.author
Byrum, K.
dc.contributor.author
Cerruti, M.
dc.contributor.author
Connolly, M. P.
dc.contributor.author
Cui, W.
dc.contributor.author
Errando, M.
dc.contributor.author
Falcone, A.
dc.contributor.author
Feng, Q.
dc.contributor.author
Fernandez Alonso, Mateo
dc.contributor.author
Finley, J. P.
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Fleischhack, H.
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Flinders, A.
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Fortson, L.
dc.contributor.author
Furniss, A.
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Griffin, S.
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Grube, J.
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Hütten, M.
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Hanna, D.
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Hervet, O.
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Holder, J.
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Humensky, T. B.
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Johnson, C. A.
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Kaaret, P.
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Rovero, Adrian Carlos
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The Veritas Collaboration
dc.date.available
2017-06-26T17:53:33Z
dc.date.issued
2016-11-01
dc.identifier.citation
Archer, A.; Benbow, W.; Bird, R.; Bourbeau, E.; Buchovecky, M.; et al.; Very high energy observations of the binaries V 404 CYG AND 4U 0115+634 during giant X-Ray outbursts; Iop Publishing; Astrophysical Journal; 831; 1; 1-11-2016; 113,1-5
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/18880
dc.description.abstract
Transient X-ray binaries produce major outbursts in which the X-ray flux can increase over the quiescent level by factors as large as 107. The low-mass X-ray binary V 404 Cyg and the high-mass system 4U 0115+634 underwent such major outbursts in 2015 June and October, respectively. We present here observations at energies above hundreds of GeV with the VERITAS observatory taken during some of the brightest X-ray activity ever observed from these systems. No gamma-ray emission has been detected by VERITAS in 2.5 hr of observations of the microquasar V 404 Cyg from 2015, June 20–21. The upper flux limits derived from these observations on the gamma-ray flux above 200 GeV of F $\lt \,4.4\times {10}^{-12}$ cm−2 s−1 correspond to a tiny fraction (about 10−6) of the Eddington luminosity of the system, in stark contrast to that seen in the X-ray band. No gamma-rays have been detected during observations of 4U 0115+634 in the period of major X-ray activity in 2015 October. The flux upper limit derived from our observations is F $\lt \,2.1\times {10}^{-12}$ cm−2 s−1 for gamma-rays above 300 GeV, setting an upper limit on the ratio of gamma-ray to X-ray luminosity of less than 4%.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Iop Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Very High Energy Gamma Rays
dc.subject
Binary Stars
dc.subject
X-Ray Transients
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Very high energy observations of the binaries V 404 CYG AND 4U 0115+634 during giant X-Ray outbursts
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-13T14:14:38Z
dc.journal.volume
831
dc.journal.number
1
dc.journal.pagination
113,1-5
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Archer, A.. University of Washington; Estados Unidos
dc.description.fil
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: Bourbeau, E.. McGill University; Canadá
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Fil: Buchovecky, M.. University of California; Estados Unidos
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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: Byrum, K.. Argonne National Laboratory; Estados Unidos
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Fil: Cerruti, M.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
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Fil: Connolly, M. P.. National University of Ireland Galway,; Irlanda
dc.description.fil
Fil: Cui, W.. Purdue University; Estados Unidos
dc.description.fil
Fil: Errando, M.. University of Washington; Estados Unidos
dc.description.fil
Fil: Falcone, A.. Pennsylvania State University; Estados Unidos
dc.description.fil
Fil: Feng, Q.. Purdue University; Estados Unidos
dc.description.fil
Fil: Fernandez Alonso, Mateo. 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
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Fil: Finley, J. P.. Purdue University; Estados Unidos
dc.description.fil
Fil: Fleischhack, H.. Desy; Alemania
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Fil: Flinders, A.. State University Of Utah; Estados Unidos
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Fil: Fortson, L.. University of Minnesota; Estados Unidos
dc.description.fil
Fil: Furniss, A.. University of California; Estados Unidos
dc.description.fil
Fil: Griffin, S.. McGill University; Canadá
dc.description.fil
Fil: Grube, J.. Adler Planetarium and Astronomy Museum; Estados Unidos
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Fil: Hütten, M.. Purdue University; Estados Unidos
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Fil: Hanna, D.. McGill University; Canadá
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Fil: Hervet, O.. University of California; Estados Unidos
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Fil: Holder, J.. University of Delaware; Estados Unidos
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Fil: Humensky, T. B.. Columbia University; Estados Unidos
dc.description.fil
Fil: Johnson, C. A.. University of California; Estados Unidos
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Fil: Kaaret, P.. University of Iowa; Estados Unidos
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
Astrophysical Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/0004-637X/831/1/113
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1608.06464
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/0004-637X/831/1/113/meta
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