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dc.contributor.author
Aliu, E.
dc.contributor.author
Aune, T.
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Beilicke, M.
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Benbow, W.
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Bottcher, M.
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Bouvier, A.
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Bradbury, S. M.
dc.contributor.author
Buckley, J. H.
dc.contributor.author
Bugaev, V.
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Cannon, A.
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Cesarini, A.
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Ciupik, L.
dc.contributor.author
Connolly, M. P.
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Cui, W.
dc.contributor.author
Decerprit, D.
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Dickherber, R.
dc.contributor.author
Duke, C.
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Errando, M.
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Falcone, A.
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Feng, Q.
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Finnegan, G.
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Fortson, L.
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Furniss, A.
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Galante, N.
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Gall, D.
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Gillanders, G. H.
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Godambe, S.
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Griffin, S.
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Grube, J.
dc.contributor.author
Pichel, Ana Carolina
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dc.contributor.author
The Veritas Collaboration
dc.date.available
2017-07-11T19:38:19Z
dc.date.issued
2011-12-01
dc.identifier.citation
Aliu, E.; Aune, T.; Beilicke, M.; Benbow, W.; Bottcher, M.; et al.; Multiwavelength Observations of the Previously Unidentified Blazar RX J0648.7+1516; IOP Publishing; Astrophysical Journal; 742; 2; 1-12-2011; 127,1-7
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/20154
dc.description.abstract
We report on the VERITAS discovery of very-high-energy (VHE) gamma-ray emission above 200 GeV from the high-frequency-peaked BL Lac object RXJ0648.7+1516 (GBJ0648+1516), associated with 1FGL J0648.8+1516. The photon spectrum above 200 GeV is fit by a power law dN/dE = F0(E/E0)-Gamma with a photon index of 4.4 ± 0.8stat ± 0.3syst and a flux normalization F0 of (2.3± 0.5stat ±1.2sys)×10^-11 TeV^-1cm^-2s^-1 with E0 = 300 GeV. No VHE variability is detected during VERITAS observations of RXJ0648.7+1516 between 2010 March 4 and April 15. Following the VHE discovery, the optical identification and spectroscopic redshift were obtained using the Shane 3–m Telescope at the Lick Observatory, showing the unidentified object to be a BL Lac type with a redshift of z = 0.179. Broadband multiwavelength observations contemporaneous with the VERITAS exposure period can be used to sub-classify the blazar as a high-frequency-peaked BL Lac (HBL) object, including data from the MDM observatory, Swift -UVOT and XRT, and continuous monitoring at photon energies above 1 GeV from the Fermi Large Area Telescope (LAT). We find that in the absence of undetected, high-energy rapid variability, the one-zone synchrotron self-Compton model (SSC) overproduces the high-energy gamma-ray emission measured by the Fermi -LAT over 2.3 years. The SED can be parameterized satisfactorily with an external-Compton or lepto-hadronic model, which have two and six additional free parameters, respectively, compared to the one-zone SSC model.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Gamma Rays: Galaxies
dc.subject
Bl Lacertae 20 Objects: Individual 21 (Rxj0648.7+1516, 1fgl J0648.8+1516, Verj0648+152)
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Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Multiwavelength Observations of the Previously Unidentified Blazar RX J0648.7+1516
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-10T13:26:12Z
dc.journal.volume
742
dc.journal.number
2
dc.journal.pagination
127,1-7
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Aliu, E.. Columbia University; Estados Unidos
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Fil: Aune, T.. University of California; Estados Unidos
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Fil: Beilicke, M.. University of Washington; Estados Unidos
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Fil: Benbow, W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
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Fil: Bottcher, M.. Ohio University; Estados Unidos
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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.. Washington University; Estados Unidos
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Fil: Bugaev, V.. Washington University; Estados Unidos
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Fil: Cannon, A.. University College Dublin,; Irlanda
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Fil: Cesarini, A.. National University of Ireland Galway; Irlanda
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Fil: Ciupik, L.. Adler Planetarium and Astronomy; Estados Unidos
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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: Decerprit, D.. Desy; Alemania
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Fil: Dickherber, R.. Washington University; Estados Unidos
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Fil: Duke, C.. Grinnell College; Estados Unidos
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Fil: Errando, M.. Columbia University; Estados Unidos
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Fil: Falcone, A.. Pennsylvania State University; Estados Unidos
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Fil: Feng, Q.. 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: Furniss, A.. University of California; 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: Gillanders, G. H.. National University of Ireland Galway; Irlanda
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Fil: Godambe, S.. University of Utah; Estados Unidos
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Fil: Griffin, S.. McGill University; Canadá
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Fil: Grube, J.. Adler Planetarium and Astronomy Museum; 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: The Veritas Collaboration.
dc.journal.title
Astrophysical Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/0004-637X/742/2/127
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1110.5949
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/742/2/127/meta
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