Multiwavelength observations of a VHE gamma-ray flare from PKS 1510-089   in 2015

MAGIC Collaboration: M. L. Ahnen (1); S. Ansoldi (2,25); L. A.; Antonelli (3); C. Arcaro (4); A. Babi\'c (5); B. Banerjee (6); P. Bangale; (7); U. Barres de Almeida (7,26); J. A. Barrio (8); J. Becerra Gonz\'alez; (9,10,27); W. Bednarek (11); E. Bernardini (12,28); A. Berti (2,29); B.; Biasuzzi (2); A. Biland (1); O. Blanch (13); S. Bonnefoy (8); G. Bonnoli; (14); F. Borracci (7); T. Bretz (15,30); R. Carosi (14); A. Carosi (3); A.; Chatterjee (6); P. Colin (7); E. Colombo (9,10); J. L. Contreras (8); J.; Cortina (13); S. Covino (3); P. Cumani (13); P. Da Vela (14); F. Dazzi (7),; A. De Angelis (4); B. De Lotto (2); E. de O\~na Wilhelmi (16); F. Di Pierro; (3); M. Doert (17); A. Dom\'inguez (8); D. Dominis Prester (5); D. Dorner; (15); M. Doro (4); S. Einecke (17); D. Eisenacher Glawion (15); D. Elsaesser; (17); M. Engelkemeier (17); V. Fallah Ramazani (18); A. Fern\'andez-Barral; (13); D. Fidalgo (8); M. V. Fonseca (8); L. Font (19); C. Fruck (7); D.; Galindo (20); R. J. Garc\'ia L\'opez (9,10); M. Garczarczyk (12); M. Gaug; (19); P. Giammaria (3); N. Godinovi\'c (5); D. Gora (12); D. Guberman (13),; D. Hadasch (21); A. Hahn (7); T. Hassan (13); M. Hayashida (21); J. Herrera; (9,10); J. Hose (7); D. Hrupec (5); G. Hughes (1); K. Ishio (7); Y. Konno; (21); H. Kubo (21); J. Kushida (21); D. Kuve\v{z}di\'c (5); D. Lelas (5); E.; Lindfors (18); S. Lombardi (3); F. Longo (2,29); M. L\'opez (8); P. Majumdar; (6); M. Makariev (22); G. Maneva (22); M. Manganaro (9,10); K. Mannheim (15),; L. Maraschi (3); M. Mariotti (4); M. Mart\'inez (13); D. Mazin (7,31); U.; Menzel (7); R. Mirzoyan (7); A. Moralejo (13); E. Moretti (7); D. Nakajima; (21); V. Neustroev (18); A. Niedzwiecki (11); M. Nievas Rosillo (8); K.; Nilsson (18,32); K. Nishijima (21); K. Noda (7); L. Nogu\'es (13); S. Paiano; (4); J. Palacio (13); M. Palatiello (2); D. Paneque (7); R. Paoletti (14); J.; M. Paredes (20); X. Paredes-Fortuny (20); G. Pedaletti (12); M. Peresano (2),; L. Perri (3); M. Persic (2,33); J. Poutanen (18); P. G. Prada Moroni (23); E.; Prandini (4); I. Puljak (5); J. R. Garcia (7); I. Reichardt (4); W. Rhode; (17); M. Rib\'o (20); J. Rico (13); T. Saito (21); K. Satalecka (12); S.; Schroeder (17); T. Schweizer (7); S. N. Shore (23); A. Sillanp\"a\"a (18); J.; Sitarek (11); I. \v{S}nidari\'c (5); D. Sobczynska (11); A. Stamerra (3); M.; Strzys (7); T. Suri\'c (5); L. Takalo (18); F. Tavecchio (3); P. Temnikov; (22); T. Terzi\'c (5); D. Tescaro (4); M. Teshima (7,31); D. F. Torres (24),; N. Torres-Alb\`a (20); T. Toyama (7); A. Treves (2); G. Vanzo (9,10); M.; Vazquez Acosta (9,10); I. Vovk (7); J. E. Ward (13); M. Will (9,10); M. H. Wu; (16); D. Zari\'c (5); R. Desiante (2); J. Becerra Gonz\'alez (9,10,27); F.; D'Ammando (34,35); S. Larsson (36,37); C. M. Raiteri (38); R. Reinthal (39),; A. L\"ahteenm\"aki (40; 41); E. J\"arvel\"a (40,41); M. Tornikoski (40); V.; Ramakrishnan (40); S. G. Jorstad (42,43); A. P. Marscher (42); V. Bala (42),; N. R. MacDonald (42); N. Kaur (44,45); Sameer (44,46); K. Baliyan (44); J. A.; Acosta-Pulido (9,10); C. Lazaro (9,10); C. Mart\'inez-Lombilla (9,10); A. B.; Grinon-Marin (9,10); A. Pastor Yabar (9,10); C. Protasio (9,10); M. I.; Carnerero (9,10,38); H. Jermak (47,48); I. A. Steele (48); V. M. Larionov; (43,49); G. A. Borman (50); T. S. Grishina (43) ((1) ETH Zurich; Switzerland,; (2) Universit\`a di Udine; and INFN Trieste; Udine; Italy; (3) INAF National; Institute for Astrophysics; Rome; Italy; (4) Universit\`a di Padova; INFN,; Padova; Italy; (5) Croatian MAGIC Consortium; Rudjer Boskovic Institute,; University of Rijeka; University of Split - FESB; University of Zagreb - FER,; University of Osijek; Croatia; (6) Saha Institute of Nuclear Physics,; Kolkata; India; (7) Max-Planck-Institut f\"ur Physik; M\"unchen; Germany; (8); Universidad Complutense; Madrid; Spain; (9) Inst. de Astrof\'isica de; Canarias; La Laguna; Tenerife; Spain; (10) Universidad de La Laguna; Dpto.; Astrof\'isica; La Laguna; Tenerife; Spain; (11) University of \L\'od\'z,; Lodz; Poland; (12) Deutsches Elektronen-Synchrotron (DESY); Zeuthen; Germany,; (13) Institut de Fisica d'Altes Energies (IFAE); The Barcelona Institute of; Science; Technology; Bellaterra (Barcelona); Spain; (14) Universit\`a di; Siena; and INFN Pisa; Siena; Italy; (15) Universit\"at W\"urzburg,; W\"urzburg; Germany; (16) Institute for Space Sciences (CSIC/IEEC),; Barcelona; Spain; (17) Technische Universit\"at Dortmund; Dortmund; Germany,; (18) Finnish MAGIC Consortium; Tuorla Observatory; University of Turku and; Astronomy Division; University of Oulu; Finland; (19) Unitat de F\'isica de; les Radiacions; Departament de F\'isica; and CERES-IEEC; Universitat; Aut\`onoma de Barcelona; Bellaterra; Spain; (20) Universitat de Barcelona,; ICC; IEEC-UB; Barcelona; Spain; (21) Japanese MAGIC Consortium; ICRR; The; University of Tokyo; Department of Physics; Hakubi Center; Kyoto; University; Tokai University; The University of Tokushima; Japan; (22) Inst.; for Nucl. Research; Nucl. Energy; Sofia; Bulgaria; (23) Universit\`a di; Pisa; and INFN Pisa; Pisa; Italy; (24) ICREA; Institute for Space Sciences; (CSIC/IEEC); Barcelona; Spain; (25) also at the Department of Physics of; Kyoto University; Japan; (26) now at Centro Brasileiro de Pesquisas F\'isicas; (CBPF/MCTI); Rio de Janeiro; Brazil; (27) now at NASA Goddard Space Flight; Center; Greenbelt; USA; Department of Physics; Department of Astronomy,; University of Maryland; USA; (28) Humboldt University of Berlin; Institut; f\"ur Physik; Berlin; Germany; (29) also at University of Trieste; (30) now; at Ecole polytechnique f\'ed\'erale de Lausanne (EPFL); Lausanne,; Switzerland; (31) also at Japanese MAGIC Consortium; (32) now at Finnish; Centre for Astronomy with ESO (FINCA); Turku; Finland; (33) also at; INAF-Trieste; Dept. of Physics Astronomy; University of Bologna; (34) Dip.; di Fisica e Astronomia; Universit\`a di Bologna; Italy; (35) INAF - Istituto; di Radioastronomia; Bologna; Italy; (36) KTH Royal Institute of Technology,; Department of Physics; Stockholm; Sweden; (37) Oskar Klein Centre for; Cosmoparticle Physics; Stockholm; Sweden; (38) INAF; Osservatorio Astrofisico; di Torino; Pino Torinese; Italy; (39) Tuorla Observatory; Department of; Physics; Astronomy; University of Turku; Finland; (40) Aalto University; Mets\"ahovi Radio Observatory; Kylm\"al\"a; Finland; (41) Aalto University; Department of Radio Science; Engineering; Finland; (42) IAR; Boston; University; USA; (43) St.Petersburg State University; Russia; (44) Physical; Research Laboratory; Gujrat; India; (45) Indian Institute of Technology,; Gujrat; India; (46) Department of Astronomy; Astrophysics; The; Pennsylvania State University; Davey Laboratory; USA; (47) Department of; Physics; Lancaster University; UK; (48) Astrophysics Research Institute,; Liverpool John Moores University; UK; (49) Pulkovo Observatory; St.; Petersburg; Russia; (50) Crimean Astrophysical Observatory; Crimea)

arXiv:1610.09416·astro-ph.HE·January 9, 2020

Multiwavelength observations of a VHE gamma-ray flare from PKS 1510-089 in 2015

MAGIC Collaboration: M. L. Ahnen (1), S. Ansoldi (2,25), L. A., Antonelli (3), C. Arcaro (4), A. Babi\'c (5), B. Banerjee (6), P. Bangale, (7), U. Barres de Almeida (7,26), J. A. Barrio (8), J. Becerra Gonz\'alez, (9,10,27), W. Bednarek (11), E. Bernardini (12,28), A. Berti (2

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TL;DR

This study reports the first detection of VHE gamma-ray variability from PKS 1510-089 during a high gamma-ray state, combining multiwavelength data to model the emission region and explore its physical properties.

Contribution

It presents the first observation of VHE gamma-ray variability in PKS 1510-089 and constrains the emission region size through broadband spectral modeling during a high state.

Findings

01

Detected significant VHE gamma-ray variability during a high state.

02

Correlated optical polarization rotation and radio jet activity.

03

Constrained the emission region size using flux variability.

Abstract

Context. PKS 1510-089 is one of only a few flat spectrum radio quasars detected in the VHE (very-high-energy, > 100 GeV) gamma-ray band. Aims. We study the broadband spectral and temporal properties of the PKS 1510-089 emission during a high gamma-ray state. Methods. We performed VHE gamma-ray observations of PKS 1510-089 with the MAGIC telescopes during a long high gamma-ray state in May 2015. In order to perform broadband modelling of the source, we have also gathered contemporaneous multiwavelength data in radio, IR, optical photometry and polarization, UV, X-ray and GeV gamma-ray ranges. We construct a broadband spectral energy distribution (SED) in two periods, selected according to VHE gamma-ray state. Results. PKS 1510-089 has been detected by MAGIC during a few day-long observations performed in the middle of a long, high optical and gamma-ray state, showing for the first time a…

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