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Archer, A.; Benbow, W.; Bird, R.; Bourbeau, E.; Buchovecky, M.; Buckley, J.H.; Bugaev, V.; Byrum, K.; Cerruti, M.; Connolly, M.P.; Cui, W.; Errando, M.; Falcone, A.; Feng, Q.; Fernandez-Alonso, M.; Finley, J.P.; Fleischhack, H.; Flinders, A. (...) Williams, D.A. "VERY HIGH ENERGY OBSERVATIONS of the BINARIES v 404 CYG and 4U 0115+634 during GIANT X-RAY OUTBURSTS" (2016) Astrophysical Journal. 831(1)
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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 10 7 . 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 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 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%. © 2016. The American Astronomical Society. All rights reserved..

Registro:

Documento: Artículo
Título:VERY HIGH ENERGY OBSERVATIONS of the BINARIES v 404 CYG and 4U 0115+634 during GIANT X-RAY OUTBURSTS
Autor:Archer, A.; Benbow, W.; Bird, R.; Bourbeau, E.; Buchovecky, M.; Buckley, J.H.; Bugaev, V.; Byrum, K.; Cerruti, M.; Connolly, M.P.; Cui, W.; Errando, M.; Falcone, A.; Feng, Q.; Fernandez-Alonso, M.; Finley, J.P.; Fleischhack, H.; Flinders, A.; Fortson, L.; Furniss, A.; Griffin, S.; Grube, J.; Hütten, M.; Hanna, D.; Hervet, O.; Holder, J.; Humensky, T.B.; Johnson, C.A.; Kaaret, P.; Kar, P.; Kelley-Hoskins, N.; Kertzman, M.; Kieda, D.; Krause, M.; Kumar, S.; Lang, M.J.; Lin, T.T.Y.; Maier, G.; Moriarty, P.; Mukherjee, R.; Nieto, D.; O'Brien, S.; Ong, R.A.; Park, N.; Pohl, M.; Popkow, A.; Pueschel, E.; Quinn, J.; Ragan, K.; Reynolds, P.T.; Richards, G.T.; Roache, E.; Rousselle, J.; Rovero, A.C.; Sadeh, I.; Schlenstedt, S.; Sembroski, G.H.; Shahinyan, K.; Staszak, D.; Telezhinsky, I.; Tyler, J.; Wakely, S.P.; Wilcox, P.; Wilhelm, A.; Williams, D.A.
Filiación: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
School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
Physics Department, McGill University, Montreal, QC H3A 2T8, Canada
Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, United States
Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, United States
School of Physics, National University of Ireland Galway, University Road, Galway, Ireland
Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, United States
Department of Physics and Center for Astrophysics, Tsinghua University, Beijing, 100084, China
Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802, United States
Instituto de Astronomia y Fisica Del Espacio, Casilla de Correo 67 - Sucursal 28, Ciudad Autnoma de Buenos Aires, C1428ZAA, Argentina
DESY, Platanenallee 6, Zeuthen, D-15738, Germany
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, California State University - East Bay, Hayward, CA 94542, United States
Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605, United States
Santa Cruz Institute for Particle Physics, Department of Physics, University of California, Santa Cruz, CA 95064, United States
Department of Physics and Astronomy, Bartol Research Institute, University of Delaware, Newark, DE 19716, United States
Physics Department, Columbia University, New York, NY 10027, United States
Department of Physics and Astronomy, University of Iowa, Van Allen Hall, Iowa City, IA 52242, United States
Department of Physics and Astronomy, DePauw University, Greencastle, IN 46135-0037, United States
Department of Physics and Astronomy, Barnard College, Columbia UniversityNY 10027, United States
Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, United States
Institute of Physics and Astronomy, University of Potsdam, Potsdam-Golm, D-14476, Germany
Department of Physical Sciences, Cork Institute of Technology, Bishopstown, Cork, Ireland
School of Physics, Center for Relativistic Astrophysics, Georgia Institute of Technology, 837 State Street NW, Atlanta, GA 30332-0430, United States
Palabras clave:acceleration of particles; binaries: general; gamma rays: general; stars: individual (V 404 Cyg, 4U 0115+634)
Año:2016
Volumen:831
Número:1
DOI: http://dx.doi.org/10.3847/0004-637X/831/1/113
Título revista:Astrophysical Journal
Título revista abreviado:Astrophys. J.
ISSN:0004637X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v831_n1_p_Archer

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Citas:

---------- APA ----------
Archer, A., Benbow, W., Bird, R., Bourbeau, E., Buchovecky, M., Buckley, J.H., Bugaev, V.,..., Williams, D.A. (2016) . VERY HIGH ENERGY OBSERVATIONS of the BINARIES v 404 CYG and 4U 0115+634 during GIANT X-RAY OUTBURSTS. Astrophysical Journal, 831(1).
http://dx.doi.org/10.3847/0004-637X/831/1/113
---------- CHICAGO ----------
Archer, A., Benbow, W., Bird, R., Bourbeau, E., Buchovecky, M., Buckley, J.H., et al. "VERY HIGH ENERGY OBSERVATIONS of the BINARIES v 404 CYG and 4U 0115+634 during GIANT X-RAY OUTBURSTS" . Astrophysical Journal 831, no. 1 (2016).
http://dx.doi.org/10.3847/0004-637X/831/1/113
---------- MLA ----------
Archer, A., Benbow, W., Bird, R., Bourbeau, E., Buchovecky, M., Buckley, J.H., et al. "VERY HIGH ENERGY OBSERVATIONS of the BINARIES v 404 CYG and 4U 0115+634 during GIANT X-RAY OUTBURSTS" . Astrophysical Journal, vol. 831, no. 1, 2016.
http://dx.doi.org/10.3847/0004-637X/831/1/113
---------- VANCOUVER ----------
Archer, A., Benbow, W., Bird, R., Bourbeau, E., Buchovecky, M., Buckley, J.H., et al. VERY HIGH ENERGY OBSERVATIONS of the BINARIES v 404 CYG and 4U 0115+634 during GIANT X-RAY OUTBURSTS. Astrophys. J. 2016;831(1).
http://dx.doi.org/10.3847/0004-637X/831/1/113