Rapid TeV gamma-ray flaring of BL Lacertae

We report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flaring activity was observed during a 34.6 minute exposure, when the integral flux above 200 GeV reached (3.4 ± 0.6) × 10-6...

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Autores principales: Arlen, T., Aune, T., Beilicke, M., Benbow, W., Bouvier, A., Buckley, J.H., Bugaev, V., Cesarini, A., Ciupik, L., Connolly, M.P., Cui, W., Dickherber, R., Dumm, J., Errando, M., Falcone, A., Federici, S., Feng, Q., Finley, J.P., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., Griffin, S., Grube, J., Gyuk, G., Hanna, D., Holder, J., Humensky, T.B., Kaaret, P., Karlsson, N., Kertzman, M., Khassen, Y., Kieda, D., Krawczynski, H., Krennrich, F., Maier, G., Moriarty, P., Mukherjee, R., Nelson, T., O'Faoláin De Bhróithe, A., Ong, R.A., Orr, M., Park, N., Perkins, J.S., Pichel, A., Pohl, M., Prokoph, H., Quinn, J., Ragan, K., Reyes, L.C., Reynolds, P.T., Roache, E., Saxon, D.B., Schroedter, M., Sembroski, G.H., Staszak, D., Telezhinsky, I., Tešić, G., Theiling, M., Tsurusaki, K., Varlotta, A., Vincent, S., Wakely, S.P., Weekes, T.C., Weinstein, A., Welsing, R., Williams, D.A., Zitzer, B., Jorstad, S.G., MacDonald, N.R., Marscher, A.P., Smith, P.S., Walker, R.C., Hovatta, T., Richards, J., Max-Moerbeck, W., Readhead, A., Lister, M.L., Kovalev, Y.Y., Pushkarev, A.B., Gurwell, M.A., Lähteenmäki, A., Nieppola, E., Tornikoski, M., Järvelä, E.
Formato: JOUR
Materias:
galaxies: active
gamma rays: galaxies
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0004637X_v762_n2_p_Arlen
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_0004637X_v762_n2_p_Arlen2023-10-03T14:02:31Z Rapid TeV gamma-ray flaring of BL Lacertae Arlen, T. Aune, T. Beilicke, M. Benbow, W. Bouvier, A. Buckley, J.H. Bugaev, V. Cesarini, A. Ciupik, L. Connolly, M.P. Cui, W. Dickherber, R. Dumm, J. Errando, M. Falcone, A. Federici, S. Feng, Q. Finley, J.P. Finnegan, G. Fortson, L. Furniss, A. Galante, N. Gall, D. Griffin, S. Grube, J. Gyuk, G. Hanna, D. Holder, J. Humensky, T.B. Kaaret, P. Karlsson, N. Kertzman, M. Khassen, Y. Kieda, D. Krawczynski, H. Krennrich, F. Maier, G. Moriarty, P. Mukherjee, R. Nelson, T. O'Faoláin De Bhróithe, A. Ong, R.A. Orr, M. Park, N. Perkins, J.S. Pichel, A. Pohl, M. Prokoph, H. Quinn, J. Ragan, K. Reyes, L.C. Reynolds, P.T. Roache, E. Saxon, D.B. Schroedter, M. Sembroski, G.H. Staszak, D. Telezhinsky, I. Tešić, G. Theiling, M. Tsurusaki, K. Varlotta, A. Vincent, S. Wakely, S.P. Weekes, T.C. Weinstein, A. Welsing, R. Williams, D.A. Zitzer, B. Jorstad, S.G. MacDonald, N.R. Marscher, A.P. Smith, P.S. Walker, R.C. Hovatta, T. Richards, J. Max-Moerbeck, W. Readhead, A. Lister, M.L. Kovalev, Y.Y. Pushkarev, A.B. Gurwell, M.A. Lähteenmäki, A. Nieppola, E. Tornikoski, M. Järvelä, E. galaxies: active gamma rays: galaxies We report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flaring activity was observed during a 34.6 minute exposure, when the integral flux above 200 GeV reached (3.4 ± 0.6) × 10-6 photons m-2 s-1, roughly 125% of the Crab Nebula flux measured by VERITAS. The light curve indicates that the observations missed the rising phase of the flare but covered a significant portion of the decaying phase. The exponential decay time was determined to be 13 ± 4 minutes, making it one of the most rapid gamma-ray flares seen from a TeV blazar. The gamma-ray spectrum of BL Lacertae during the flare was soft, with a photon index of 3.6 ± 0.4, which is in agreement with the measurement made previously by MAGIC in a lower flaring state. Contemporaneous radio observations of the source with the Very Long Baseline Array revealed the emergence of a new, superluminal component from the core around the time of the TeV gamma-ray flare, accompanied by changes in the optical polarization angle. Changes in flux also appear to have occurred at optical, UV, and GeV gamma-ray wavelengths at the time of the flare, although they are difficult to quantify precisely due to sparse coverage. A strong flare was seen at radio wavelengths roughly four months later, which might be related to the gamma-ray flaring activities. We discuss the implications of these multiwavelength results. © 2013. The American Astronomical Society. All rights reserved.. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v762_n2_p_Arlen
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic galaxies: active
gamma rays: galaxies
spellingShingle galaxies: active
gamma rays: galaxies
Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Bouvier, A.
Buckley, J.H.
Bugaev, V.
Cesarini, A.
Ciupik, L.
Connolly, M.P.
Cui, W.
Dickherber, R.
Dumm, J.
Errando, M.
Falcone, A.
Federici, S.
Feng, Q.
Finley, J.P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Griffin, S.
Grube, J.
Gyuk, G.
Hanna, D.
Holder, J.
Humensky, T.B.
Kaaret, P.
Karlsson, N.
Kertzman, M.
Khassen, Y.
Kieda, D.
Krawczynski, H.
Krennrich, F.
Maier, G.
Moriarty, P.
Mukherjee, R.
Nelson, T.
O'Faoláin De Bhróithe, A.
Ong, R.A.
Orr, M.
Park, N.
Perkins, J.S.
Pichel, A.
Pohl, M.
Prokoph, H.
Quinn, J.
Ragan, K.
Reyes, L.C.
Reynolds, P.T.
Roache, E.
Saxon, D.B.
Schroedter, M.
Sembroski, G.H.
Staszak, D.
Telezhinsky, I.
Tešić, G.
Theiling, M.
Tsurusaki, K.
Varlotta, A.
Vincent, S.
Wakely, S.P.
Weekes, T.C.
Weinstein, A.
Welsing, R.
Williams, D.A.
Zitzer, B.
Jorstad, S.G.
MacDonald, N.R.
Marscher, A.P.
Smith, P.S.
Walker, R.C.
Hovatta, T.
Richards, J.
Max-Moerbeck, W.
Readhead, A.
Lister, M.L.
Kovalev, Y.Y.
Pushkarev, A.B.
Gurwell, M.A.
Lähteenmäki, A.
Nieppola, E.
Tornikoski, M.
Järvelä, E.
Rapid TeV gamma-ray flaring of BL Lacertae
topic_facet galaxies: active
gamma rays: galaxies
description We report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flaring activity was observed during a 34.6 minute exposure, when the integral flux above 200 GeV reached (3.4 ± 0.6) × 10-6 photons m-2 s-1, roughly 125% of the Crab Nebula flux measured by VERITAS. The light curve indicates that the observations missed the rising phase of the flare but covered a significant portion of the decaying phase. The exponential decay time was determined to be 13 ± 4 minutes, making it one of the most rapid gamma-ray flares seen from a TeV blazar. The gamma-ray spectrum of BL Lacertae during the flare was soft, with a photon index of 3.6 ± 0.4, which is in agreement with the measurement made previously by MAGIC in a lower flaring state. Contemporaneous radio observations of the source with the Very Long Baseline Array revealed the emergence of a new, superluminal component from the core around the time of the TeV gamma-ray flare, accompanied by changes in the optical polarization angle. Changes in flux also appear to have occurred at optical, UV, and GeV gamma-ray wavelengths at the time of the flare, although they are difficult to quantify precisely due to sparse coverage. A strong flare was seen at radio wavelengths roughly four months later, which might be related to the gamma-ray flaring activities. We discuss the implications of these multiwavelength results. © 2013. The American Astronomical Society. All rights reserved..
format JOUR
author Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Bouvier, A.
Buckley, J.H.
Bugaev, V.
Cesarini, A.
Ciupik, L.
Connolly, M.P.
Cui, W.
Dickherber, R.
Dumm, J.
Errando, M.
Falcone, A.
Federici, S.
Feng, Q.
Finley, J.P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Griffin, S.
Grube, J.
Gyuk, G.
Hanna, D.
Holder, J.
Humensky, T.B.
Kaaret, P.
Karlsson, N.
Kertzman, M.
Khassen, Y.
Kieda, D.
Krawczynski, H.
Krennrich, F.
Maier, G.
Moriarty, P.
Mukherjee, R.
Nelson, T.
O'Faoláin De Bhróithe, A.
Ong, R.A.
Orr, M.
Park, N.
Perkins, J.S.
Pichel, A.
Pohl, M.
Prokoph, H.
Quinn, J.
Ragan, K.
Reyes, L.C.
Reynolds, P.T.
Roache, E.
Saxon, D.B.
Schroedter, M.
Sembroski, G.H.
Staszak, D.
Telezhinsky, I.
Tešić, G.
Theiling, M.
Tsurusaki, K.
Varlotta, A.
Vincent, S.
Wakely, S.P.
Weekes, T.C.
Weinstein, A.
Welsing, R.
Williams, D.A.
Zitzer, B.
Jorstad, S.G.
MacDonald, N.R.
Marscher, A.P.
Smith, P.S.
Walker, R.C.
Hovatta, T.
Richards, J.
Max-Moerbeck, W.
Readhead, A.
Lister, M.L.
Kovalev, Y.Y.
Pushkarev, A.B.
Gurwell, M.A.
Lähteenmäki, A.
Nieppola, E.
Tornikoski, M.
Järvelä, E.
author_facet Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Bouvier, A.
Buckley, J.H.
Bugaev, V.
Cesarini, A.
Ciupik, L.
Connolly, M.P.
Cui, W.
Dickherber, R.
Dumm, J.
Errando, M.
Falcone, A.
Federici, S.
Feng, Q.
Finley, J.P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Griffin, S.
Grube, J.
Gyuk, G.
Hanna, D.
Holder, J.
Humensky, T.B.
Kaaret, P.
Karlsson, N.
Kertzman, M.
Khassen, Y.
Kieda, D.
Krawczynski, H.
Krennrich, F.
Maier, G.
Moriarty, P.
Mukherjee, R.
Nelson, T.
O'Faoláin De Bhróithe, A.
Ong, R.A.
Orr, M.
Park, N.
Perkins, J.S.
Pichel, A.
Pohl, M.
Prokoph, H.
Quinn, J.
Ragan, K.
Reyes, L.C.
Reynolds, P.T.
Roache, E.
Saxon, D.B.
Schroedter, M.
Sembroski, G.H.
Staszak, D.
Telezhinsky, I.
Tešić, G.
Theiling, M.
Tsurusaki, K.
Varlotta, A.
Vincent, S.
Wakely, S.P.
Weekes, T.C.
Weinstein, A.
Welsing, R.
Williams, D.A.
Zitzer, B.
Jorstad, S.G.
MacDonald, N.R.
Marscher, A.P.
Smith, P.S.
Walker, R.C.
Hovatta, T.
Richards, J.
Max-Moerbeck, W.
Readhead, A.
Lister, M.L.
Kovalev, Y.Y.
Pushkarev, A.B.
Gurwell, M.A.
Lähteenmäki, A.
Nieppola, E.
Tornikoski, M.
Järvelä, E.
author_sort Arlen, T.
title Rapid TeV gamma-ray flaring of BL Lacertae
title_short Rapid TeV gamma-ray flaring of BL Lacertae
title_full Rapid TeV gamma-ray flaring of BL Lacertae
title_fullStr Rapid TeV gamma-ray flaring of BL Lacertae
title_full_unstemmed Rapid TeV gamma-ray flaring of BL Lacertae
title_sort rapid tev gamma-ray flaring of bl lacertae
url http://hdl.handle.net/20.500.12110/paper_0004637X_v762_n2_p_Arlen
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