Observations of the magnetars 4U 0142+61 and 1E 2259+586 with the MAGIC   telescopes

The MAGIC Collaboration: J. Aleksi\'c (1); L. A. Antonelli (2); P.; Antoranz (3); M. Asensio (4); U. Barres de Almeida (5); J. A. Barrio (4); W.; Bednarek (6); K. Berger (7,8); E. Bernardini (9); A. Biland (10); O. Blanch; (1); R. K. Bock (5); A. Boller (10); S. Bonnefoy (4); G. Bonnoli (2); D.; Borla Tridon (5); T. Bretz (11,28); E. Carmona (12); A. Carosi (2); D.; Carreto Fidalgo (11,4); P. Colin (5); E. Colombo (7); J. L. Contreras (4); J.; Cortina (1); L. Cossio (13); S. Covino (2); P. Da Vela (3); F. Dazzi (13,29),; A. De Angelis (13); G. De Caneva (9); B. De Lotto (13); C. Delgado Mendez; (12); M. Doert (14); A. Dom\'inguez (15); D. Dominis Prester (16); D. Dorner; (11); M. Doro (17); D. Eisenacher (11); D. Elsaesser (11); D. Ferenc (16); M.; V. Fonseca (4); L. Font (17); C. Fruck (5); R. J. Garc\'ia L\'opez (7,8); M.; Garczarczyk (7); D. Garrido Terrats (17); M. Gaug (17); G. Giavitto (1); N.; Godinovi\'c (16); A. Gonz\'alez Mu\~noz (1); S. R. Gozzini (9); A. Hadamek; (14); D. Hadasch (18); A. Herrero (7,8); J. Hose (5); D. Hrupec (16); F.; Jankowski (9); V. Kadenius (19); S. Klepser (1,30); M. L. Knoetig (5); T.; Kr\"ahenb\"uhl (10); J. Krause (5); J. Kushida (20); A. La Barbera (2); D.; Lelas (16); E. Leonardo (3); N. Lewandowska (11); E. Lindfors (19,31); S.; Lombardi (2); M. L\'opez (4); R. L\'opez-Coto (1); A. L\'opez-Oramas (1); E.; Lorenz (5,10); I. Lozano (4); M. Makariev (21); K. Mallot (9); G. Maneva; (21); N. Mankuzhiyil (13); K. Mannheim (11); L. Maraschi (2); B. Marcote; (22); M. Mariotti (23); M. Mart\'inez (1); J. Masbou (23); D. Mazin (5,5); M.; Meucci (3); J. M. Miranda (3); R. Mirzoyan (5); J. Mold\'on (22); A. Moralejo; (1); P. Munar-Adrover (22); D. Nakajima (5); A. Niedzwiecki (6); D. Nieto; (4); K. Nilsson (19,31); N. Nowak (5); R. Orito (20); S. Paiano (23); M.; Palatiello (13); D. Paneque (5); R. Paoletti (3); J. M. Paredes (22); S.; Partini (3); M. Persic (13,24); M. Pilia (25); F. Prada (15,32); P. G. Prada; Moroni (26); E. Prandini (23); I. Puljak (16); I. Reichardt (1); R. Reinthal; (19); W. Rhode (14); M. Rib\'o (22); J. Rico (27,1); S. R\"ugamer (11); A.; Saggion (23); K. Saito (20); T. Y. Saito (5); M. Salvati (2); K. Satalecka; (4); V. Scalzotto (23); V. Scapin (4); C. Schultz (23); T. Schweizer (5); S.; N. Shore (26); A. Sillanp\"a\"a (19); J. Sitarek (1); I. Snidaric (16); D.; Sobczynska (6); F. Spanier (11); S. Spiro (2); V. Stamatescu (1); A. Stamerra; (3); B. Steinke (5); J. Storz (11); S. Sun (5); T. Suri\'c (16); L. Takalo; (19); H. Takami (20); F. Tavecchio (2); P. Temnikov (21); T. Terzi\'c (16),; D. Tescaro (7); M. Teshima (5); O. Tibolla (11); D. F. Torres (27,18); T.; Toyama (5); A. Treves (25); M. Uellenbeck (14); P. Vogler (10); R. M. Wagner; (5); Q. Weitzel (10); F. Zandanel (15); R. Zanin (22); N. Rea (18) ((1); IFAE; Edifici Cn.; Campus UAB; E-08193 Bellaterra; Spain; (2) INAF National; Institute for Astrophysics; I-00136 Rome; Italy; (3) Universit\`a di Siena,; and INFN Pisa; I-53100 Siena; Italy; (4) Universidad Complutense; E-28040; Madrid; Spain; (5) Max-Planck-Institut f\"ur Physik; D-80805 M\"unchen,; Germany; (6) University of \L\'od\'z; PL-90236 Lodz; Poland; (7) Inst. de; Astrof\'isica de Canarias; E-38200 La Laguna; Tenerife; Spain; (8) Depto. de; Astrof\'isica; Universidad de La Laguna; E-38206 La Laguna; Spain; (9); Deutsches Elektronen-Synchrotron (DESY); D-15738 Zeuthen; Germany; (10) ETH; Zurich; CH-8093 Zurich; Switzerland; (11) Universit\"at W\"urzburg; D-97074; W\"urzburg; Germany; (12) Centro de Investigaciones Energ\'eticas,; Medioambientales y Tecnol\'ogicas; E-28040 Madrid; Spain; (13) Universit\`a; di Udine; and INFN Trieste; I-33100 Udine; Italy; (14) Technische; Universit\"at Dortmund; D-44221 Dortmund; Germany; (15) Inst. de; Astrof\'isica de Andaluc\'ia (CSIC); E-18080 Granada; Spain; (16) Croatian; MAGIC Consortium; Rudjer Boskovic Institute; University of Rijeka and; University of Split; HR-10000 Zagreb; Croatia; (17) Universitat Aut\`onoma de; Barcelona; E-08193 Bellaterra; Spain; (18) Institut de Ci\`encies de l'Espai; (IEEC-CSIC); E-08193 Bellaterra; Spain; (19) Tuorla Observatory; University; of Turku; FI-21500 Piikki\"o; Finland; (20) Japanese MAGIC Consortium,; Division of Physics; Astronomy; Kyoto University; Japan; (21) Inst. for; Nucl. Research; Nucl. Energy; BG-1784 Sofia; Bulgaria; (22) Universitat de; Barcelona (ICC/IEEC); E-08028 Barcelona; Spain; (23) Universit\`a di Padova; and INFN; I-35131 Padova; Italy; (24) INAF/Osservatorio Astronomico; INFN,; I-34143 Trieste; Italy; (25) Universit\`a dell'Insubria; Como; I-22100 Como,; Italy; (26) Universit\`a di Pisa; and INFN Pisa; I-56126 Pisa; Italy; (27); ICREA; E-08010 Barcelona; Spain; (28) now at: Ecole polytechnique; f\'ed\'erale de Lausanne (EPFL); Lausanne; Switzerland; (29) supported by; INFN Padova; (30) now at: DESY; Zeuthen; Germany; (31) now at: Finnish Centre; for Astronomy with ESO (FINCA); University of Turku; Finland; (32) also at; Instituto de Fisica Teorica; UAM/CSIC; E-28049 Madrid; Spain)

arXiv:1211.1173·astro-ph.HE·June 12, 2015

Observations of the magnetars 4U 0142+61 and 1E 2259+586 with the MAGIC telescopes

The MAGIC Collaboration: J. Aleksi\'c (1), L. A. Antonelli (2), P., Antoranz (3), M. Asensio (4), U. Barres de Almeida (5), J. A. Barrio (4), W., Bednarek (6), K. Berger (7,8), E. Bernardini (9), A. Biland (10), O. Blanch, (1), R. K. Bock (5), A. Boller (10), S. Bonnefoy (4)

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TL;DR

This study used MAGIC telescopes to search for very high energy gamma-ray emission from magnetars 4U 0142+61 and 1E 2259+586, setting upper limits as no detection was made, thus constraining their gamma-ray flux.

Contribution

First observational attempt to detect >100 GeV gamma-ray emission from magnetars, providing upper limits and constraining theoretical models.

Findings

01

No gamma-ray detection from either magnetar.

02

Established upper limits on gamma-ray flux above 200 GeV.

03

Data constrains models of magnetar high-energy emission.

Abstract

Magnetars are an extreme, highly magnetized class of isolated neutron stars whose large X-ray luminosity is believed to be driven by their high magnetic field. In this work we study for the first time the possible very high energy gamma-ray emission above 100 GeV from magnetars, observing the sources 4U 0142+61 and 1E 2259+586. We observed the two sources with atmospheric Cherenkov telescopes in the very high energy range (E > 100 GeV). 4U 0142+61 was observed with the MAGIC I telescope in 2008 for ~25 h and 1E 2259+586 was observed with the MAGIC stereoscopic system in 2010 for ~14 h. The data were analyzed with the standard MAGIC analysis software. Neither magnetar was detected. Upper limits to the differential and integral flux above 200 GeV were computed using the Rolke algorithm. We obtain integral upper limits to the flux of 1.52*10^-12cm^-2 s^-1 and 2.7*10^-12cm^-2 s^-1 with a…

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