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    Observation of a sudden cessation of a very-high-energy gamma-ray flare in PKS 1510-089 with H.E.S.S. and MAGIC in May 2016

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    This post-print version is made available under a Creative Commons Attribution 4.0 License.
    Author(s)
    Collaboration, H.E.S.S.
    Abdalla, H.
    Adam, R.
    Aharonian, F.
    Benkhali, F. Ait
    Angüner, E.O.
    Arcaro, C.
    Arm, C.
    Armstrong, T.
    Ashkar, H.
    Backes, M.
    Baghmanyan, V.
    Martins, V. Barbosa
    Barnacka, A.
    Barnard, M.
    Becherini, Y.
    Berge, D.
    Bernlöhr, K.
    Bi, B.
    Böttcher, M.
    Boisson, C.
    Bolmont, J.
    Bonnefoy, S.
    Lavergne, M. de Bony de
    Bregeon, J.
    Breuhaus, M.
    Brun, F.
    Brun, P.
    Bryan, M.
    Büchele, M.
    Bulik, T.
    Bylund, T.
    Caroff, S.
    Carosi, A.
    Casanova, S.
    Ch, T.
    Ch, S.
    Chen, A.
    Cotter, G.
    Curyło, M.
    Mbarubucyeye, J. Damascene
    Davids, I.D.
    Davies, J.
    Deil, C.
    Devin, J.
    deWilt, P.
    Dirson, L.
    Djannati-Ataï, A.
    Dmytriiev, A.
    Donath, A.
    Doroshenko, V.
    Dyks, J.
    Egberts, K.
    Eichhorn, F.
    Einecke, S.
    Emery, G.
    Ernenwein, J.-P.
    Feijen, K.
    Fegan, S.
    Fiasson, A.
    Clairfontaine, G. Fichet de
    Filipovic, M.
    Fontaine, G.
    Funk, S.
    Füßling, M.
    Gabici, S.
    Gallant, Y.A.
    Giavitto, G.
    Giunti, L.
    Glawion, D.
    Glicenstein, J.F.
    Gottschall, D.
    Grondin, M.-H.
    Hahn, J.
    Haupt, M.
    Hermann, G.
    Hinton, J.A.
    Hofmann, W.
    Hoischen, C.
    Holch, T.L.
    Holler, M.
    Hörbe, M.
    Horns, D.
    Huber, D.
    Jamrozy, M.
    Jankowsky, D.
    Jankowsky, F.
    Jardin-Blicq, A.
    Joshi, V.
    Jung-Richardt, I.
    Kastendieck, M.A.
    Katarzyński, K.
    Katz, U.
    Khangulyan, D.
    Khélifi, B.
    Klepser, S.
    Kluźniak, W.
    Komin, Nu
    Konno, R.
    Kosack, K.
    Kostunin, D.
    Kreter, M.
    Lamanna, G.
    Lemière, A.
    Lemoine-Goumard, M.
    Lenain, J.-P.
    Levy, C.
    Lohse, T.
    Lypova, I.
    Mackey, J.
    Majumdar, J.
    Malyshev, D.
    Malyshev, D.
    Mar, V.
    Marchegiani, P.
    Marcowith, A.
    Mares, A.
    Martí-Devesa, G.
    Marx, R.
    Maurin, G.
    Meintjes, P.J.
    Meyer, M.
    Mitchell, A.M.W.
    Moderski, R.
    Mohamed, M.
    Mohrmann, L.
    Montanari, A.
    Moore, C.
    Morris, P.
    Moulin, E.
    Muller, J.
    Murach, T.
    Nakashima, K.
    Nayerhoda, A.
    Naurois, M. de
    Ndiyavala, H.
    Niederwanger, F.
    Niemiec, J.
    Oakes, L.
    O'Brien, P.
    Odaka, H.
    Ohm, S.
    Olivera-Nieto, L.
    Wilhelmi, E. de Ona
    Ostrowski, M.
    Panter, M.
    Panny, S.
    Parsons, R.D.
    Peron, G.
    Peyaud, B.
    Piel, Q.
    Pita, S.
    Poireau, V.
    Noel, A Priyana
    Prokhorov, D.A.
    Prokoph, H.
    Pühlhofer, G.
    Punch, M.
    Quirrenbach, A.
    Raab, S.
    Rauth, R.
    Reichherzer, P.
    Reimer, A.
    Reimer, O.
    Remy, Q.
    Renaud, M.
    Rieger, F.
    Rinchiuso, L.
    Romoli, C.
    Rowell, G.
    Rudak, B.
    Ruiz-Velasco, E.
    Sahakian, V.
    Sailer, S.
    Sanchez, D.A.
    Santangelo, A.
    Sasaki, M.
    Scalici, M.
    Schüssler, F.
    Schutte, H.M.
    Schwanke, U.
    Schwemmer, S.
    Seglar-Arroyo, M.
    Senniappan, M.
    Seyffert, A.S.
    Shafi, N.
    Shiningayamwe, K.
    Simoni, R.
    Sinha, A.
    Sol, H.
    Specovius, A.
    Spencer, S.
    Spir-Jacob, M.
    Stawarz, Ł.
    Sun, L.
    Steenkamp, R.
    Stegmann, C.
    Steinmassl, S.
    Steppa, C.
    Takahashi, T.
    Tavernier, T.
    Taylor, A.M.
    Terrier, R.
    Tiziani, D.
    Tluczykont, M.
    Tomankova, L.
    Trichard, C.
    Tsirou, M.
    Tuffs, R.
    Uchiyama, Y.
    Walt, D.J. van der
    Eldik, C. van
    Rensburg, C. van
    Soelen, B. van
    Vasileiadis, G.
    Veh, J.
    Venter, C.
    Vincent, P.
    Vink, J.
    Völk, H.J.
    Vuillaume, T.
    Wadiasingh, Z.
    Wagner, S.J.
    Watson, J.
    Werner, F.
    White, R.
    Wierzcholska, A.
    Wong, Yu Wun
    Yusafzai, A.
    Zacharias, M.
    Zanin, R.
    Zargaryan, D.
    Zdziarski, A.A.
    Zech, A.
    Zhu, S.J.
    Zorn, J.
    Zouari, S.
    Żywucka, N.
    Collaboration, MAGIC
    Acciari, V.A.
    Ansoldi, S.
    Antonelli, L.A.
    Engels, A. Arbet
    Asano, K.
    Baack, D.
    Babić, A.
    Baquero, A.
    Almeida, U. Barres de
    Barrio, J.A.
    González, J. Becerra
    Bednarek, W.
    Bellizzi, L.
    Bernardini, E.
    Berti, A.
    Besenrieder, J.
    Bhattacharyya, W.
    Bigongiari, C.
    Bil, A.
    Blanch, O.
    Bonnoli, G.
    Bošnjak, Ž.
    Busetto, G.
    Carosi, R.
    Ceribella, G.
    Cerruti, M.
    Chai, Y.
    Chilingarian, A.
    Cikota, S.
    Colak, S.M.
    Colin, U.
    Colombo, E.
    Contreras, J.L.
    Cortina, J.
    Covino, S.
    D'Amico, G.
    D'Elia, V.
    Vela, P. Da
    Dazzi, F.
    Angelis, A. De
    Lotto, B. De
    Delfino, M.
    Delgado, J.
    Depaoli, D.
    Pierro, F. Di
    Venere, L. Di
    Neira, E. Do Souto Espi
    Prester, D. Dominis
    Donini, A.
    Dorner, D.
    Doro, M.
    Elsaesser, D.
    Ramazani, V. Fallah
    Fattorini, A.
    Ferrara, G.
    Foffano, L.
    Fonseca, M.V.
    Font, L.
    Fruck, C.
    Fukami, S.
    López, R.J. García
    Garczarczyk, M.
    Gasparyan, S.
    Gaug, M.
    Giglietto, N.
    Giordano, F.
    Gliwny, P.
    Godinović, N.
    Green, D.
    Hadasch, D.
    Hahn, A.
    Heckmann, L.
    Herrera, J.
    Hoang, J.
    Hrupec, D.
    Hütten, M.
    Inada, T.
    Inoue, S.
    Ishio, K.
    Iwamura, Y.
    Jouvin, L.
    Kajiwara, Y.
    Karjalainen, M.
    Kerszberg, D.
    Kobayashi, Y.
    Kubo, H.
    Kushida, J.
    Lamastra, A.
    Lelas, D.
    Leone, F.
    Lindfors, E.
    Lombardi, S.
    Longo, F.
    López, M.
    López-Coto, R.
    López-Oramas, A.
    Loporchio, S..
    Fraga, B Machado de Oliveira
    Maggio, C.
    Majumdar, P.
    Makariev, M.
    Mallamaci, M.
    Maneva, G.
    Manganaro, M.
    Mannheim, K.
    Maraschi, L.
    Mariotti, M.
    Martínez, M.
    Mazin, D.
    Mender, S.
    Mićanović, S.
    Miceli, D.
    Miener, T.
    Minev, M.
    Mir, J.M.
    Mirzoyan, R.
    Molina, E.
    Moralejo, A.
    Morcuende, D.
    Moreno, V.
    Moretti, E.
    Munar-Adrover, P.
    Neustroev, V.
    Nigro, C.
    Nilsson, K.
    Ninci, D.
    Nishijima, K.
    Noda, K.
    Nozaki, S.
    Ohtani, Y.
    Oka, T.
    Otero-Santos, J.
    Palatiello, M.
    Paneque, D.
    Paoletti, R.
    Paredes, J.M.
    Pavletić, L.
    Nil, P. Pe
    Perennes, C.
    Persic, M.
    Moroni, P.G. Prada
    Pr, E.
    Priyadarshi, C.
    Puljak, I.
    Rhode, W.
    Ribó, M.
    Rico, J.
    Righi, C.
    Rugliancich, A.
    Saha, L.
    Sahakyan, N.
    Saito, T.
    Sakurai, S.
    Satalecka, K.
    Schleicher, B.
    Schmidt, K.
    Schweizer, T.
    Sitarek, J.
    Šnidarić, I.
    Sobczynska, D.
    Spolon, A.
    Stamerra, A.
    Strom, D.
    Strzys, M.
    Suda, Y.
    Surić, T.
    Takahashi, M.
    Tavecchio, F.
    Temnikov, P.
    Terzić, T.
    Teshima, M
    Torres-Albà, N.
    Tosti, L.
    Truzzi, S.
    Scherpenberg, J. van
    Vanzo, G.
    Acosta, M. Vazquez
    Ventura, S.
    Verguilov, V.
    Vigorito, C.F.
    Vitale, V.
    Vovk, I.
    Will, M.
    Zarić, D.
    Jorstad, S.G.
    Marscher, Alan P.
    Boccardi, B.
    Casadio, C.
    Hodgson, J.
    Kim, J.-Y.
    Krichbaum, T.P.
    Lähteenmäki, A.
    Tornikoski, M.
    Traianou, E.
    Weaver, Z.R.
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    https://hdl.handle.net/2144/42770
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    Accepted manuscript
    Citation (published version)
    H.E.S.S. Collaboration, H. Abdalla, R. Adam, F. Aharonian, F Ait Benkhali, E.O. Angüner, C. Arcaro, C. Arm, T. Armstrong, H. Ashkar, M. Backes, V. Baghmanyan, V Barbosa Martins, A. Barnacka, M. Barnard, Y. Becherini, D. Berge, K. Bernlöhr, B. Bi, M. Böttcher, C. Boisson, J. Bolmont, S. Bonnefoy, M de Bony de Lavergne, J. Bregeon, M. Breuhaus, F. Brun, P. Brun, M. Bryan, M. Büchele, T. Bulik, T. Bylund, S. Caroff, A. Carosi, S. Casanova, T. Ch, S. Ch, A. Chen, G. Cotter, M. Curyło, J Damascene Mbarubucyeye, I.D. Davids, J. Davies, C. Deil, J. Devin, P. deWilt, L. Dirson, A. Djannati-Ataï, A. Dmytriiev, A. Donath, V. Doroshenko, J. Dyks, K. Egberts, F. Eichhorn, S. Einecke, G. Emery, J.-.P. Ernenwein, K. Feijen, S. Fegan, A. Fiasson, G Fichet de Clairfontaine, M. Filipovic, G. Fontaine, S. Funk, M. Füßling, S. Gabici, Y.A. Gallant, G. Giavitto, L. Giunti, D. Glawion, J.F. Glicenstein, D. Gottschall, M.-.H. Grondin, J. Hahn, M. Haupt, G. Hermann, J.A. Hinton, W. Hofmann, C. Hoischen, T.L. Holch, M. Holler, M. Hörbe, D. Horns, D. Huber, M. Jamrozy, D. Jankowsky, F. Jankowsky, A. Jardin-Blicq, V. Joshi, I. Jung-Richardt, M.A. Kastendieck, K. Katarzyński, U. Katz, D. Khangulyan, B. Khélifi, S. Klepser, W. Kluźniak, Nu Komin, R. Konno, K. Kosack, D. Kostunin, M. Kreter, G. Lamanna, A. Lemière, M. Lemoine-Goumard, J.-.P. Lenain, C. Levy, T. Lohse, I. Lypova, J. Mackey, J. Majumdar, D. Malyshev, D. Malyshev, V. Mar, P. Marchegiani, A. Marcowith, A. Mares, G. Martí-Devesa, R. Marx, G. Maurin, P.J. Meintjes, M. Meyer, A.M.W. Mitchell, R. Moderski, M. Mohamed, L. Mohrmann, A. Montanari, C. Moore, P. Morris, E. Moulin, J. Muller, T. Murach, K. Nakashima, A. Nayerhoda, M de Naurois, H. Ndiyavala, F. Niederwanger, J. Niemiec, L. Oakes, P. O'Brien, H. Odaka, S. Ohm, L. Olivera-Nieto, E de Ona Wilhelmi, M. Ostrowski, M. Panter, S. Panny, R.D. Parsons, G. Peron, B. Peyaud, Q. Piel, S. Pita, V. Poireau, A Priyana Noel, D.A. Prokhorov, H. Prokoph, G. Pühlhofer, M. Punch, A. Quirrenbach, S. Raab, R. Rauth, P. Reichherzer, A. Reimer, O. Reimer, Q. Remy, M. Renaud, F. Rieger, L. Rinchiuso, C. Romoli, G. Rowell, B. Rudak, E. Ruiz-Velasco, V. Sahakian, S. Sailer, D.A. Sanchez, A. Santangelo, M. Sasaki, M. Scalici, F. Schüssler, H.M. Schutte, U. Schwanke, S. Schwemmer, M. Seglar-Arroyo, M. Senniappan, A.S. Seyffert, N. Shafi, K. Shiningayamwe, R. Simoni, A. Sinha, H. Sol, A. Specovius, S. Spencer, M. Spir-Jacob, Ł. Stawarz, L. Sun, R. Steenkamp, C. Stegmann, S. Steinmassl, C. Steppa, T. Takahashi, T. Tavernier, A.M. Taylor, R. Terrier, D. Tiziani, M. Tluczykont, L. Tomankova, C. Trichard, M. Tsirou, R. Tuffs, Y. Uchiyama, DJ van der Walt, C van Eldik, C van Rensburg, B van Soelen, G. Vasileiadis, J. Veh, C. Venter, P. Vincent, J. Vink, H.J. Völk, T. Vuillaume, Z. Wadiasingh, S.J. Wagner, J. Watson, F. Werner, R. White, A. Wierzcholska, Yu Wun Wong, A. Yusafzai, M. Zacharias, R. Zanin, D. Zargaryan, A.A. Zdziarski, A. Zech, S.J. Zhu, J. Zorn, S. Zouari, N. Żywucka, M.A.G.I.C. Collaboration, V.A. Acciari, S. Ansoldi, L.A. Antonelli, A Arbet Engels, K. Asano, D. Baack, A. Babić, A. Baquero, U Barres de Almeida, J.A. Barrio, J Becerra González, W. Bednarek, L. Bellizzi, E. Bernardini, A. Berti, J. Besenrieder, W. Bhattacharyya, C. Bigongiari, A. Bil, O. Blanch, G. Bonnoli, Ž. Bošnjak, G. Busetto, R. Carosi, G. Ceribella, M. Cerruti, Y. Chai, A. Chilingarian, S. Cikota, S.M. Colak, U. Colin, E. Colombo, J.L. Contreras, J. Cortina, S. Covino, G. D'Amico, V. D'Elia, P Da Vela, F. Dazzi, A De Angelis, B De Lotto, M. Delfino, J. Delgado, D. Depaoli, F Di Pierro, L Di Venere, E Do Souto Espi neira, D Dominis Prester, A. Donini, D. Dorner, M. Doro, D. Elsaesser, V Fallah Ramazani, A. Fattorini, G. Ferrara, L. Foffano, M.V. Fonseca, L. Font, C. Fruck, S. Fukami, RJ García López, M. Garczarczyk, S. Gasparyan, M. Gaug, N. Giglietto, F. Giordano, P. Gliwny, N. Godinović, D. Green, D. Hadasch, A. Hahn, L. Heckmann, J. Herrera, J. Hoang, D. Hrupec, M. Hütten, T. Inada, S. Inoue, K. Ishio, Y. Iwamura, L. Jouvin, Y. Kajiwara, M. Karjalainen, D. Kerszberg, Y. Kobayashi, H. Kubo, J. Kushida, A. Lamastra, D. Lelas, F. Leone, E. Lindfors, S. Lombardi, F. Longo, M. López, R. López-Coto, A. López-Oramas, S. Loporchio, B Machado de Oliveira Fraga, C. Maggio, P. Majumdar, M. Makariev, M. Mallamaci, G. Maneva, M. Manganaro, K. Mannheim, L. Maraschi, M. Mariotti, M. Martínez, D. Mazin, S. Mender, S. Mićanović, D. Miceli, T. Miener, M. Minev, J.M. Mir, R. Mirzoyan, E. Molina, A. Moralejo, D. Morcuende, V. Moreno, E. Moretti, P. Munar-Adrover, V. Neustroev, C. Nigro, K. Nilsson, D. Ninci, K. Nishijima, K. Noda, S. Nozaki, Y. Ohtani, T. Oka, J. Otero-Santos, M. Palatiello, D. Paneque, R. Paoletti, J.M. Paredes, L. Pavletić, P Pe nil, C. Perennes, M. Persic, PG Prada Moroni, E. Pr, C. Priyadarshi, I. Puljak, W. Rhode, M. Ribó, J. Rico, C. Righi, A. Rugliancich, L. Saha, N. Sahakyan, T. Saito, S. Sakurai, K. Satalecka, B. Schleicher, K. Schmidt, T. Schweizer, J. Sitarek, I. Šnidarić, D. Sobczynska, A. Spolon, A. Stamerra, D. Strom, M. Strzys, Y. Suda, T. Surić, M. Takahashi, F. Tavecchio, P. Temnikov, T. Terzić, M. Teshima, N. Torres-Albà, L. Tosti, S. Truzzi, J van Scherpenberg, G. Vanzo, M Vazquez Acosta, S. Ventura, V. Verguilov, C.F. Vigorito, V. Vitale, I. Vovk, M. Will, D. Zarić, S.G. Jorstad, A.P. Marscher, B. Boccardi, C. Casadio, J. Hodgson, J.-.Y. Kim, T.P. Krichbaum, A. Lähteenmäki, M. Tornikoski, E. Traianou, Z.R. Weaver. "Observation of a sudden cessation of a very-high-energy gamma-ray flare in PKS 1510-089 with H.E.S.S. and MAGIC in May 2016." https://arxiv.org/abs/2012.10254. Add dc.date.issued: 2020-12-18.
    Abstract
    The flat spectrum radio quasar (FSRQ) PKS 1510-089 is known for its complex multiwavelength behavior, and is one of only a few FSRQs detected at very high energy (VHE, E >100 GeV) 𝛾-rays. VHE 𝛾-ray observations with H.E.S.S. and MAGIC during late May and early June 2016 resulted in the detection of an unprecedented flare, which reveals for the first time VHE 𝛾-ray intranight variability in this source. While a common variability timescale of 1.5 hr is found, there is a significant deviation near the end of the flare with a timescale of ∼ 20 min marking the cessation of the event. The peak flux is nearly two orders of magnitude above the low-level emission. For the first time, curvature is detected in the VHE 𝛾-ray spectrum of PKS 1510-089, which is fully explained through absorption by the extragalactic background light. Optical R-band observations with ATOM reveal a counterpart of the 𝛾-ray flare, even though the detailed flux evolution differs from the VHE lightcurve. Interestingly, a steep flux decrease is observed at the same time as the cessation of the VHE flare. In the high energy (HE, E >100 MeV) 𝛾-ray band only a moderate flux increase is observed with Fermi-LAT, while the HE 𝛾-ray spectrum significantly hardens up to a photon index of 1.6. A search for broad-line region (BLR) absorption features in the 𝛾-ray spectrum indicates that the emission region is located outside of the BLR. Radio VLBI observations reveal a fast moving knot interacting with a standing jet feature around the time of the flare. As the standing feature is located ∼ 50 pc from the black hole, the emission region of the flare may have been located at a significant distance from the black hole. If this correlation is indeed true, VHE 𝛾 rays have been produced far down the jet where turbulent plasma crosses a standing shock.
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    This post-print version is made available under a Creative Commons Attribution 4.0 License.
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    • CAS: Astronomy: Scholarly Papers [244]
    • BU Open Access Articles [4757]


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