Multiwavelength observations of the previously unidentified blazar RX J0648.7+1516

Aliu, E.; Aune, T.; Beilicke, M.; Benbow, W.; Böttcher, M.; Bouvier, A.; Bradbury, S.M.; Buckley, J.H.; Bugaev, V.; Cannon, A.; Cesarini, A.; Ciupik, L.; Connolly, M.P.; Cui, W.; Decerprit, G.; Dickherber, R.; Duke, C.; Errando, M.; Falcone, A.; Feng, Q.; Finnegan, G.; Fortson, L.; Furniss, A.; Galante, N.; Gall, D.; Gillanders, G.H.; Godambe, S.; Griffin, S.; Grube, J.; Gyuk, G.; Hanna, D.; Hivick, B.; Holder, J.; Huan, H.; Hughes, G.; Hui, C.M.; Humensky, T.B.; Kaaret, P.; Karlsson, N.; Kertzman, M.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Maier, G.; Majumdar, P.; McArthur, S.; McCann, A.; Moriarty, P.; Mukherjee, R.; Nelson, T.; Ong, R.A.; Orr, M.; Otte, A.N.; Park, N.; Perkins, J.S.; Pichel, A.; Pohl, M.; Prokoph, H.; Quinn, J.; Ragan, K.; Reyes, L.C.; Reynolds, P.T.; Roache, E.; Rose, H.J.; Ruppel, J.; Saxon, D.B.; Sembroski, G.H.; Skole, C.; Smith, A.W.; Staszak, D.; Teišić, G.; Theiling, M.; Thibadeau, S.; Tsurusaki, K.; Tyler, J.; Varlotta, A.; Vassiliev, V.V.; Wakely, S.P.; Weekes, T.C.; Weinstein, A.; Williams, D.A.; Zitzer, B.; Ciprini, S.; Fumagalli, M.; Kaplan, K.; Paneque, D.; Prochaska, J.X.

doi:10.1088/0004-637X/742/2/127

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Aliu, E.; Aune, T.; Beilicke, M.; Benbow, W.; Böttcher, M.; Bouvier, A.; Bradbury, S.M.; Buckley, J.H.; Bugaev, V.; Cannon, A.; Cesarini, A.; Ciupik, L.; Connolly, M.P.; Cui, W.; Decerprit, G.; Dickherber, R.; Duke, C.; Errando, M. (...) Prochaska, J.X. "Multiwavelength observations of the previously unidentified blazar RX J0648.7+1516" (2011) Astrophysical Journal. 742(2)

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Abstract:

We report on the VERITAS discovery of very high energy (VHE) gamma-ray emission above 200GeV from the high-frequency-peaked BL Lac (HBL) object RXJ0648.7+1516 (GBJ0648+1516), associated with 1FGLJ0648.8+1516. The photon spectrum above 200GeV is fitted by a power law dN/dE = F 0(E/E 0)-Γ with a photon index Γ of 4.4 ± 0.8stat± 0.3syst and a flux normalization F 0 of (2.3± 0.5stat± 1.2sys) × 10-11TeV-1cm-2 s-1 with E 0 = 300GeV. 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 subclassify the blazar as an HBL object, including data from the MDM observatory, Swift-UVOT, and X-Ray Telescope, and continuous monitoring at photon energies above 1GeV 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 (SSC) model overproduces the high-energy gamma-ray emission measured by the Fermi-LAT over 2.3 years. The spectral energy distribution 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. © 2011. The American Astronomical Society. All rights reserved.

Registro:

Documento:	Artículo
Título:	Multiwavelength observations of the previously unidentified blazar RX J0648.7+1516
Autor:	Aliu, E.; Aune, T.; Beilicke, M.; Benbow, W.; Böttcher, M.; Bouvier, A.; Bradbury, S.M.; Buckley, J.H.; Bugaev, V.; Cannon, A.; Cesarini, A.; Ciupik, L.; Connolly, M.P.; Cui, W.; Decerprit, G.; Dickherber, R.; Duke, C.; Errando, M.; Falcone, A.; Feng, Q.; Finnegan, G.; Fortson, L.; Furniss, A.; Galante, N.; Gall, D.; Gillanders, G.H.; Godambe, S.; Griffin, S.; Grube, J.; Gyuk, G.; Hanna, D.; Hivick, B.; Holder, J.; Huan, H.; Hughes, G.; Hui, C.M.; Humensky, T.B.; Kaaret, P.; Karlsson, N.; Kertzman, M.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Maier, G.; Majumdar, P.; McArthur, S.; McCann, A.; Moriarty, P.; Mukherjee, R.; Nelson, T.; Ong, R.A.; Orr, M.; Otte, A.N.; Park, N.; Perkins, J.S.; Pichel, A.; Pohl, M.; Prokoph, H.; Quinn, J.; Ragan, K.; Reyes, L.C.; Reynolds, P.T.; Roache, E.; Rose, H.J.; Ruppel, J.; Saxon, D.B.; Sembroski, G.H.; Skole, C.; Smith, A.W.; Staszak, D.; Teišić, G.; Theiling, M.; Thibadeau, S.; Tsurusaki, K.; Tyler, J.; Varlotta, A.; Vassiliev, V.V.; Wakely, S.P.; Weekes, T.C.; Weinstein, A.; Williams, D.A.; Zitzer, B.; Ciprini, S.; Fumagalli, M.; Kaplan, K.; Paneque, D.; Prochaska, J.X.
Filiación:	Department of Physics and Astronomy, Barnard College, Columbia University, NY 10027, United States Santa Cruz Institute for Particle Physics, Department of Physics, University of California, Santa Cruz, CA 95064, United States Department of Physics, Washington University, St. Louis, MO 63130, United States Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645, United States Astrophysical Institute, Department of Physics and Astronomy, Ohio University, Athens, OH 45701, United States School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom School of Physics, University College Dublin, Belfield, Dublin 4, Ireland School of Physics, National University of Ireland Galway, University Road, Galway, Ireland Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605, United States Department of Physics, Purdue University, West Lafayette, IN 47907, United States DESY, Platanenallee 6, D-15738 Zeuthen, Germany Department of Physics, Grinnell College, Grinnell, IA 50112-1690, United States Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802, United States Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, United States School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, United States Department of Physics and Astronomy, University of Iowa, Van Allen Hall, Iowa City, IA 52242, United States Physics Department, McGill University, Montreal, QC H3A 2T8, Canada Department of Physics and Astronomy, Bartol Research Institute, University of Delaware, Newark, DE 19716, United States Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, United States Department of Physics and Astronomy, DePauw University, Greencastle, IN 46135-0037, United States Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, United States Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, United States Department of Life and Physical Sciences, Galway-Mayo Institute of Technology, Dublin Road, Galway, Ireland School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455, United States CRESST, Astroparticle Physics Laboratory NASA/GSFC, Greenbelt, MD 20771, United States Department of Physics, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, United States Instituto de Astronomia y Fisica Del Espacio, (C1428ZAA) Ciudad Autnoma de Buenos Aires, Casilla de Correo 67-Sucursal 28, Argentina Institut für Physik und Astronomie, Universität Potsdam, D-14476 Potsdam-Golm, Germany Department of Applied Physics and Instrumentation, Cork Institute of Technology, Bishopstown, Cork, Ireland Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, United States Dipartimento di Fisica, Università Degli Studi di Perugia, I-06123 Perugia, Italy Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, United States Max-Planck-Institut für Physik, D-80805 München, Germany Department of Astronomy and Astrophysics, UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064, United States
Palabras clave:	gamma rays: galaxies
Año:	2011
Volumen:	742
Número:	2
DOI:	http://dx.doi.org/10.1088/0004-637X/742/2/127
Título revista:	Astrophysical Journal
Título revista abreviado:	Astrophys. J.
ISSN:	0004637X
Registro:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v742_n2_p_Aliu

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Citas:

---------- APA ----------

Aliu, E., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., Bradbury, S.M.,..., Prochaska, J.X. (2011) . Multiwavelength observations of the previously unidentified blazar RX J0648.7+1516. Astrophysical Journal, 742(2).
http://dx.doi.org/10.1088/0004-637X/742/2/127

---------- CHICAGO ----------

Aliu, E., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., et al. "Multiwavelength observations of the previously unidentified blazar RX J0648.7+1516" . Astrophysical Journal 742, no. 2 (2011).
http://dx.doi.org/10.1088/0004-637X/742/2/127

---------- MLA ----------

Aliu, E., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., et al. "Multiwavelength observations of the previously unidentified blazar RX J0648.7+1516" . Astrophysical Journal, vol. 742, no. 2, 2011.
http://dx.doi.org/10.1088/0004-637X/742/2/127

---------- VANCOUVER ----------

Aliu, E., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., et al. Multiwavelength observations of the previously unidentified blazar RX J0648.7+1516. Astrophys. J. 2011;742(2).
http://dx.doi.org/10.1088/0004-637X/742/2/127