MAGIC observations of the microquasar V404 Cygni during the 2015 outburst

M. L. Ahnen; S. Ansoldi; L. A. Antonelli; C. Arcaro; A. Babić; B. Banerjee; P. Bangale; U. Barres de Almeida; J. A. Barrio; J. Becerra González; W. Bednarek; E. Bernardini; A. Berti; B. Biasuzzi; A. Biland; O. Blanch; S. Bonnefoy; G. Bonnoli; R. Carosi; A. Carosi; A. Chatterjee; P. Colin; E. Colombo; J. L. Contreras; J. Cortina; S. Covino; P. Cumani; P. Da Vela; F. Dazzi; A. De Angelis; B. De Lotto; E. de Oña Wilhelmi; F. Di Pierro; M. Doert; A. Domínguez; D. Dominis Prester; D. Dorner; M. Doro; S. Einecke; D. Eisenacher Glawion; D. Elsaesser; M. Engelkemeier; V. Fallah Ramazani; A. Fernández-Barral; D. Fidalgo; M. V. Fonseca; L. Font; C. Fruck; D. Galindo; R. J.García López; M. Garczarczyk; M. Gaug; P. Giammaria; N. Godinović; D. Gora; S. Griffiths; D. Guberman; D. Hadasch; A. Hahn; T. Hassan; M. Hayashida; J. Herrera; J. Hose; D. Hrupec; G. Hughes; K. Ishio; Y. Konno; H. Kubo; J. Kushida; D. Kuveždić; D. Lelas; E. Lindfors; S. Lombardi; F. Longo; M. López; C. Maggio; P. Majumdar; M. Makariev; G. Maneva; M. Manganaro; K. Mannheim; L. Maraschi; M. Mariotti; M. Martínez; D. Mazin; U. Menzel; M. Minev; R. Mirzoyan; A. Moralejo; V. Moreno; E. Moretti; V. Neustroev; A. Niedzwiecki; M. Nievas Rosillo; K. Nilsson; D. Ninci; K. Nishijima; K. Noda; L. Nogués; S. Paiano

doi:10.1093/mnras/stx1690

MAGIC observations of the microquasar V404 Cygni during the 2015 outburst

M. L. Ahnen, S. Ansoldi, L. A. Antonelli, C. Arcaro, A. Babić, B. Banerjee, P. Bangale, U. Barres de Almeida, J. A. Barrio, J. Becerra González, W. Bednarek, E. Bernardini, A. Berti, B. Biasuzzi, A. Biland, O. Blanch, S. Bonnefoy, G. Bonnoli, R. Carosi, A. CarosiA. Chatterjee, P. Colin, E. Colombo, J. L. Contreras, J. Cortina, S. Covino, P. Cumani, P. Da Vela, F. Dazzi, A. De Angelis, B. De Lotto, E. de Oña Wilhelmi, F. Di Pierro, M. Doert, A. Domínguez, D. Dominis Prester, D. Dorner, M. Doro, S. Einecke, D. Eisenacher Glawion, D. Elsaesser, M. Engelkemeier, V. Fallah Ramazani, A. Fernández-Barral, D. Fidalgo, M. V. Fonseca, L. Font, C. Fruck, D. Galindo, R. J.García López, M. Garczarczyk, M. Gaug, P. Giammaria, N. Godinović, D. Gora, S. Griffiths, D. Guberman, D. Hadasch, A. Hahn, T. Hassan, M. Hayashida, J. Herrera, J. Hose, D. Hrupec, G. Hughes, K. Ishio, Y. Konno, H. Kubo, J. Kushida, D. Kuveždić, D. Lelas, E. Lindfors, S. Lombardi, F. Longo, M. López, C. Maggio, P. Majumdar, M. Makariev, G. Maneva, M. Manganaro, K. Mannheim, L. Maraschi, M. Mariotti, M. Martínez, D. Mazin, U. Menzel, M. Minev, R. Mirzoyan, A. Moralejo, V. Moreno, E. Moretti, V. Neustroev, A. Niedzwiecki, M. Nievas Rosillo, K. Nilsson, D. Ninci, K. Nishijima, K. Noda, L. Nogués, S. Paiano

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Abstract

© 2017 The Authors. The microquasar V404 Cygni underwent a series of outbursts in 2015, June 15-31, during which its flux in hard X-rays (20-40 keV) reached about 40 times the Crab nebula flux. Because of the exceptional interest of the flaring activity from this source, observations at several wavelengths were conducted. The MAGIC telescopes, triggered by the INTEGRAL alerts, followed-up the flaring source for several nights during the period June 18-27, for more than 10 h. One hour of observation was simultaneously conducted on a giant 22 GHz radio flare and a hint of signal at GeV energies seen by Fermi-LAT. The MAGIC observations did not show significant emission in any of the analysed time intervals. The derived flux upper limit, in the energy range 200-1250 GeV, is 4.8 × 10-12 photons cm-2 s-1. We estimate the gamma-ray opacity during the flaring period, which along with our non-detection points to an inefficient acceleration in the V404 Cyg jets if a very high energy emitter is located further than 1 × 1010 cm from the compact object.

Original language	English
Pages (from-to)	1688-1693
Journal	Monthly Notices of the Royal Astronomical Society
Volume	471
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stx1690
Publication status	Published - 1 Jan 2017

Keywords

Gamma-rays: general
Stars: individual: V404 Cygni (V404 Cyg)
X-rays: binaries

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10.1093/mnras/stx1690

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Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Arcaro, C., Babić, A., Banerjee, B., Bangale, P., Barres de Almeida, U., Barrio, J. A., González, J. B., Bednarek, W., Bernardini, E., Berti, A., Biasuzzi, B., Biland, A., Blanch, O., Bonnefoy, S., Bonnoli, G., Carosi, R., ... Paiano, S. (2017). MAGIC observations of the microquasar V404 Cygni during the 2015 outburst. Monthly Notices of the Royal Astronomical Society, 471(2), 1688-1693. https://doi.org/10.1093/mnras/stx1690

@article{859cf19247a247c4a63a0d82afb57b67,

title = "MAGIC observations of the microquasar V404 Cygni during the 2015 outburst",

abstract = "{\textcopyright} 2017 The Authors. The microquasar V404 Cygni underwent a series of outbursts in 2015, June 15-31, during which its flux in hard X-rays (20-40 keV) reached about 40 times the Crab nebula flux. Because of the exceptional interest of the flaring activity from this source, observations at several wavelengths were conducted. The MAGIC telescopes, triggered by the INTEGRAL alerts, followed-up the flaring source for several nights during the period June 18-27, for more than 10 h. One hour of observation was simultaneously conducted on a giant 22 GHz radio flare and a hint of signal at GeV energies seen by Fermi-LAT. The MAGIC observations did not show significant emission in any of the analysed time intervals. The derived flux upper limit, in the energy range 200-1250 GeV, is 4.8 × 10-12 photons cm-2 s-1. We estimate the gamma-ray opacity during the flaring period, which along with our non-detection points to an inefficient acceleration in the V404 Cyg jets if a very high energy emitter is located further than 1 × 1010 cm from the compact object.",

keywords = "Gamma-rays: general, Stars: individual: V404 Cygni (V404 Cyg), X-rays: binaries",

author = "Ahnen, {M. L.} and S. Ansoldi and Antonelli, {L. A.} and C. Arcaro and A. Babi{\'c} and B. Banerjee and P. Bangale and {Barres de Almeida}, U. and Barrio, {J. A.} and Gonz{\'a}lez, {J. Becerra} and W. Bednarek and E. Bernardini and A. Berti and B. Biasuzzi and A. Biland and O. Blanch and S. Bonnefoy and G. Bonnoli and R. Carosi and A. Carosi and A. Chatterjee and P. Colin and E. Colombo and Contreras, {J. L.} and J. Cortina and S. Covino and P. Cumani and {Da Vela}, P. and F. Dazzi and {De Angelis}, A. and {De Lotto}, B. and Wilhelmi, {E. de O{\~n}a} and {Di Pierro}, F. and M. Doert and A. Dom{\'i}nguez and Prester, {D. Dominis} and D. Dorner and M. Doro and S. Einecke and Glawion, {D. Eisenacher} and D. Elsaesser and M. Engelkemeier and Ramazani, {V. Fallah} and A. Fern{\'a}ndez-Barral and D. Fidalgo and Fonseca, {M. V.} and L. Font and C. Fruck and D. Galindo and L{\'o}pez, {R. J.Garc{\'i}a} and M. Garczarczyk and M. Gaug and P. Giammaria and N. Godinovi{\'c} and D. Gora and S. Griffiths and D. Guberman and D. Hadasch and A. Hahn and T. Hassan and M. Hayashida and J. Herrera and J. Hose and D. Hrupec and G. Hughes and K. Ishio and Y. Konno and H. Kubo and J. Kushida and D. Kuve{\v z}di{\'c} and D. Lelas and E. Lindfors and S. Lombardi and F. Longo and M. L{\'o}pez and C. Maggio and P. Majumdar and M. Makariev and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and M. Mariotti and M. Mart{\'i}nez and D. Mazin and U. Menzel and M. Minev and R. Mirzoyan and A. Moralejo and V. Moreno and E. Moretti and V. Neustroev and A. Niedzwiecki and Rosillo, {M. Nievas} and K. Nilsson and D. Ninci and K. Nishijima and K. Noda and L. Nogu{\'e}s and S. Paiano",

year = "2017",

month = jan,

day = "1",

doi = "10.1093/mnras/stx1690",

language = "English",

volume = "471",

pages = "1688--1693",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

number = "2",

}

Ahnen, ML, Ansoldi, S, Antonelli, LA, Arcaro, C, Babić, A, Banerjee, B, Bangale, P, Barres de Almeida, U, Barrio, JA, González, JB, Bednarek, W, Bernardini, E, Berti, A, Biasuzzi, B, Biland, A, Blanch, O, Bonnefoy, S, Bonnoli, G, Carosi, R, Carosi, A, Chatterjee, A, Colin, P, Colombo, E, Contreras, JL, Cortina, J, Covino, S, Cumani, P, Da Vela, P, Dazzi, F, De Angelis, A, De Lotto, B, Wilhelmi, EDO, Di Pierro, F, Doert, M, Domínguez, A, Prester, DD, Dorner, D, Doro, M, Einecke, S, Glawion, DE, Elsaesser, D, Engelkemeier, M, Ramazani, VF, Fernández-Barral, A, Fidalgo, D, Fonseca, MV, Font, L, Fruck, C, Galindo, D, López, RJG, Garczarczyk, M, Gaug, M, Giammaria, P, Godinović, N, Gora, D, Griffiths, S, Guberman, D, Hadasch, D, Hahn, A, Hassan, T, Hayashida, M, Herrera, J, Hose, J, Hrupec, D, Hughes, G, Ishio, K, Konno, Y, Kubo, H, Kushida, J, Kuveždić, D, Lelas, D, Lindfors, E, Lombardi, S, Longo, F, López, M, Maggio, C, Majumdar, P, Makariev, M, Maneva, G, Manganaro, M, Mannheim, K, Maraschi, L, Mariotti, M, Martínez, M, Mazin, D, Menzel, U, Minev, M, Mirzoyan, R, Moralejo, A, Moreno, V, Moretti, E, Neustroev, V, Niedzwiecki, A, Rosillo, MN, Nilsson, K, Ninci, D, Nishijima, K, Noda, K, Nogués, L & Paiano, S 2017, 'MAGIC observations of the microquasar V404 Cygni during the 2015 outburst', Monthly Notices of the Royal Astronomical Society, vol. 471, no. 2, pp. 1688-1693. https://doi.org/10.1093/mnras/stx1690

TY - JOUR

T1 - MAGIC observations of the microquasar V404 Cygni during the 2015 outburst

AU - Ahnen, M. L.

AU - Ansoldi, S.

AU - Antonelli, L. A.

AU - Arcaro, C.

AU - Babić, A.

AU - Banerjee, B.

AU - Bangale, P.

AU - Barres de Almeida, U.

AU - Barrio, J. A.

AU - González, J. Becerra

AU - Bednarek, W.

AU - Bernardini, E.

AU - Berti, A.

AU - Biasuzzi, B.

AU - Biland, A.

AU - Blanch, O.

AU - Bonnefoy, S.

AU - Bonnoli, G.

AU - Carosi, R.

AU - Carosi, A.

AU - Chatterjee, A.

AU - Colin, P.

AU - Colombo, E.

AU - Contreras, J. L.

AU - Cortina, J.

AU - Covino, S.

AU - Cumani, P.

AU - Da Vela, P.

AU - Dazzi, F.

AU - De Angelis, A.

AU - De Lotto, B.

AU - Wilhelmi, E. de Oña

AU - Di Pierro, F.

AU - Doert, M.

AU - Domínguez, A.

AU - Prester, D. Dominis

AU - Dorner, D.

AU - Doro, M.

AU - Einecke, S.

AU - Glawion, D. Eisenacher

AU - Elsaesser, D.

AU - Engelkemeier, M.

AU - Ramazani, V. Fallah

AU - Fernández-Barral, A.

AU - Fidalgo, D.

AU - Fonseca, M. V.

AU - Font, L.

AU - Fruck, C.

AU - Galindo, D.

AU - López, R. J.García

AU - Garczarczyk, M.

AU - Gaug, M.

AU - Giammaria, P.

AU - Godinović, N.

AU - Gora, D.

AU - Griffiths, S.

AU - Guberman, D.

AU - Hadasch, D.

AU - Hahn, A.

AU - Hassan, T.

AU - Hayashida, M.

AU - Herrera, J.

AU - Hose, J.

AU - Hrupec, D.

AU - Hughes, G.

AU - Ishio, K.

AU - Konno, Y.

AU - Kubo, H.

AU - Kushida, J.

AU - Kuveždić, D.

AU - Lelas, D.

AU - Lindfors, E.

AU - Lombardi, S.

AU - Longo, F.

AU - López, M.

AU - Maggio, C.

AU - Majumdar, P.

AU - Makariev, M.

AU - Maneva, G.

AU - Manganaro, M.

AU - Mannheim, K.

AU - Maraschi, L.

AU - Mariotti, M.

AU - Martínez, M.

AU - Mazin, D.

AU - Menzel, U.

AU - Minev, M.

AU - Mirzoyan, R.

AU - Moralejo, A.

AU - Moreno, V.

AU - Moretti, E.

AU - Neustroev, V.

AU - Niedzwiecki, A.

AU - Rosillo, M. Nievas

AU - Nilsson, K.

AU - Ninci, D.

AU - Nishijima, K.

AU - Noda, K.

AU - Nogués, L.

AU - Paiano, S.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - © 2017 The Authors. The microquasar V404 Cygni underwent a series of outbursts in 2015, June 15-31, during which its flux in hard X-rays (20-40 keV) reached about 40 times the Crab nebula flux. Because of the exceptional interest of the flaring activity from this source, observations at several wavelengths were conducted. The MAGIC telescopes, triggered by the INTEGRAL alerts, followed-up the flaring source for several nights during the period June 18-27, for more than 10 h. One hour of observation was simultaneously conducted on a giant 22 GHz radio flare and a hint of signal at GeV energies seen by Fermi-LAT. The MAGIC observations did not show significant emission in any of the analysed time intervals. The derived flux upper limit, in the energy range 200-1250 GeV, is 4.8 × 10-12 photons cm-2 s-1. We estimate the gamma-ray opacity during the flaring period, which along with our non-detection points to an inefficient acceleration in the V404 Cyg jets if a very high energy emitter is located further than 1 × 1010 cm from the compact object.

AB - © 2017 The Authors. The microquasar V404 Cygni underwent a series of outbursts in 2015, June 15-31, during which its flux in hard X-rays (20-40 keV) reached about 40 times the Crab nebula flux. Because of the exceptional interest of the flaring activity from this source, observations at several wavelengths were conducted. The MAGIC telescopes, triggered by the INTEGRAL alerts, followed-up the flaring source for several nights during the period June 18-27, for more than 10 h. One hour of observation was simultaneously conducted on a giant 22 GHz radio flare and a hint of signal at GeV energies seen by Fermi-LAT. The MAGIC observations did not show significant emission in any of the analysed time intervals. The derived flux upper limit, in the energy range 200-1250 GeV, is 4.8 × 10-12 photons cm-2 s-1. We estimate the gamma-ray opacity during the flaring period, which along with our non-detection points to an inefficient acceleration in the V404 Cyg jets if a very high energy emitter is located further than 1 × 1010 cm from the compact object.

KW - Gamma-rays: general

KW - Stars: individual: V404 Cygni (V404 Cyg)

KW - X-rays: binaries

U2 - 10.1093/mnras/stx1690

DO - 10.1093/mnras/stx1690

M3 - Article

SN - 0035-8711

VL - 471

SP - 1688

EP - 1693

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

MAGIC observations of the microquasar V404 Cygni during the 2015 outburst

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