Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes

J. Aleksić; E. A. Alvarez; L. A. Antonelli; P. Antoranz; M. Asensio; M. Backes; J. A. Barrio; D. Bastieri; J. Becerra González; W. Bednarek; A. Berdyugin; K. Berger; E. Bernardini; A. Biland; O. Blanch; R. K. Bock; A. Boller; G. Bonnoli; D. Borla Tridon; I. Braun; T. Bretz; A. Cañellas; E. Carmona; A. Carosi; P. Colin; E. Colombo; J. L. Contreras; J. Cortina; L. Cossio; S. Covino; F. Dazzi; A. De Angelis; G. De Caneva; E. De Cea Del Pozo; B. De Lotto; C. Delgado Mendez; A. Diago Ortega; M. Doert; A. Domínguez; D. Dominis Prester; D. Dorner; M. Doro; D. Eisenacher; D. Elsaesser; D. Ferenc; M. V. Fonseca; L. Font; C. Fruck; R. J. García López; M. Garczarczyk; D. Garrido; G. Giavitto; N. Godinović; D. Hadasch; D. Häfner; A. Herrero; D. Hildebrand; D. Höhne-Mönch; J. Hose; D. Hrupec; T. Jogler; H. Kellermann; S. Klepser; T. Krähenbühl; J. Krause; J. Kushida; A. La Barbera; D. Lelas; E. Leonardo; N. Lewandowska; E. Lindfors; S. Lombardi; M. López; A. López-Oramas; E. Lorenz; M. Makariev; G. Maneva; N. Mankuzhiyil; K. Mannheim; L. Maraschi; M. Mariotti; M. Martínez; D. Mazin; M. Meucci; J. M. Miranda; R. Mirzoyan; J. Moldón; A. Moralejo; P. Munar-Adrover; A. Niedzwiecki; D. Nieto; K. Nilsson; N. Nowak; R. Orito; D. Paneque; R. Paoletti; S. Pardo; J. M. Paredes; S. Partini; M. A. Perez-Torres

doi:10.1051/0004-6361/201118166

Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes

J. Aleksić, E. A. Alvarez, L. A. Antonelli, P. Antoranz, M. Asensio, M. Backes, J. A. Barrio, D. Bastieri, J. Becerra González, W. Bednarek, A. Berdyugin, K. Berger, E. Bernardini, A. Biland, O. Blanch, R. K. Bock, A. Boller, G. Bonnoli, D. Borla Tridon, I. BraunT. Bretz, A. Cañellas, E. Carmona, A. Carosi, P. Colin, E. Colombo, J. L. Contreras, J. Cortina, L. Cossio, S. Covino, F. Dazzi, A. De Angelis, G. De Caneva, E. De Cea Del Pozo, B. De Lotto, C. Delgado Mendez, A. Diago Ortega, M. Doert, A. Domínguez, D. Dominis Prester, D. Dorner, M. Doro, D. Eisenacher, D. Elsaesser, D. Ferenc, M. V. Fonseca, L. Font, C. Fruck, R. J. García López, M. Garczarczyk, D. Garrido, G. Giavitto, N. Godinović, D. Hadasch, D. Häfner, A. Herrero, D. Hildebrand, D. Höhne-Mönch, J. Hose, D. Hrupec, T. Jogler, H. Kellermann, S. Klepser, T. Krähenbühl, J. Krause, J. Kushida, A. La Barbera, D. Lelas, E. Leonardo, N. Lewandowska, E. Lindfors, S. Lombardi, M. López, A. López-Oramas, E. Lorenz, M. Makariev, G. Maneva, N. Mankuzhiyil, K. Mannheim, L. Maraschi, M. Mariotti, M. Martínez, D. Mazin, M. Meucci, J. M. Miranda, R. Mirzoyan, J. Moldón, A. Moralejo, P. Munar-Adrover, A. Niedzwiecki, D. Nieto, K. Nilsson, N. Nowak, R. Orito, D. Paneque, R. Paoletti, S. Pardo, J. M. Paredes, S. Partini, M. A. Perez-Torres

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We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions. We provide the widest spectra to date of the VHE components of both peaks, and these spectra extend to the energy range of satellite-borne observatories. The good resolution and background rejection of the stereoscopic MAGIC system allows us to cross-check the correctness of each spectral point of the pulsar by comparison with the corresponding (strong and well-known) Crab nebula flux. The spectra of both P1 and P2 are compatible with power laws with photon indices of 4.0 ± 0.8 (P1) and 3.42 ± 0.26 (P2), respectively, and the ratio P1/P2 between the photon counts of the two pulses is 0.54 ± 0.12. The VHE emission can be understood as an additional component produced by the inverse Compton scattering of secondary and tertiary e± pairs on IR-UV photons. © 2012 ESO.

Idioma original	Anglès
Número d’article	A69
Revista	Astronomy and Astrophysics
Volum	540
DOIs	https://doi.org/10.1051/0004-6361/201118166
Estat de la publicació	Publicada - 3 d’abr. 2012

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10.1051/0004-6361/201118166

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Aleksić, J., Alvarez, E. A., Antonelli, L. A., Antoranz, P., Asensio, M., Backes, M., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Boller, A., Bonnoli, G., Borla Tridon, D., ... Perez-Torres, M. A. (2012). Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes. Astronomy and Astrophysics, 540, Article A69. https://doi.org/10.1051/0004-6361/201118166

@article{7141526818064580bb23b29412de7d12,

title = "Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes",

abstract = "We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions. We provide the widest spectra to date of the VHE components of both peaks, and these spectra extend to the energy range of satellite-borne observatories. The good resolution and background rejection of the stereoscopic MAGIC system allows us to cross-check the correctness of each spectral point of the pulsar by comparison with the corresponding (strong and well-known) Crab nebula flux. The spectra of both P1 and P2 are compatible with power laws with photon indices of 4.0 ± 0.8 (P1) and 3.42 ± 0.26 (P2), respectively, and the ratio P1/P2 between the photon counts of the two pulses is 0.54 ± 0.12. The VHE emission can be understood as an additional component produced by the inverse Compton scattering of secondary and tertiary e± pairs on IR-UV photons. {\textcopyright} 2012 ESO.",

keywords = "Gamma rays: stars, Pulsars: individual: Crab pulsar",

author = "J. Aleksi{\'c} and Alvarez, \{E. A.\} and Antonelli, \{L. A.\} and P. Antoranz and M. Asensio and M. Backes and Barrio, \{J. A.\} and D. Bastieri and \{Becerra Gonz{\'a}lez\}, J. and W. Bednarek and A. Berdyugin and K. Berger and E. Bernardini and A. Biland and O. Blanch and Bock, \{R. K.\} and A. Boller and G. Bonnoli and \{Borla Tridon\}, D. and I. Braun and T. Bretz and A. Ca{\~n}ellas and E. Carmona and A. Carosi and P. Colin and E. Colombo and Contreras, \{J. L.\} and J. Cortina and L. Cossio and S. Covino and F. Dazzi and \{De Angelis\}, A. and \{De Caneva\}, G. and \{De Cea Del Pozo\}, E. and \{De Lotto\}, B. and \{Delgado Mendez\}, C. and \{Diago Ortega\}, A. and M. Doert and A. Dom{\'i}nguez and \{Dominis Prester\}, D. and D. Dorner and M. Doro and D. Eisenacher and D. Elsaesser and D. Ferenc and Fonseca, \{M. V.\} and L. Font and C. Fruck and \{Garc{\'i}a L{\'o}pez\}, \{R. J.\} and M. Garczarczyk and D. Garrido and G. Giavitto and N. Godinovi{\'c} and D. Hadasch and D. H{\"a}fner and A. Herrero and D. Hildebrand and D. H{\"o}hne-M{\"o}nch and J. Hose and D. Hrupec and T. Jogler and H. Kellermann and S. Klepser and T. Kr{\"a}henb{\"u}hl and J. Krause and J. Kushida and \{La Barbera\}, A. and D. Lelas and E. Leonardo and N. Lewandowska and E. Lindfors and S. Lombardi and M. L{\'o}pez and A. L{\'o}pez-Oramas and E. Lorenz and M. Makariev and G. Maneva and N. Mankuzhiyil and K. Mannheim and L. Maraschi and M. Mariotti and M. Mart{\'i}nez and D. Mazin and M. Meucci and Miranda, \{J. M.\} and R. Mirzoyan and J. Mold{\'o}n and A. Moralejo and P. Munar-Adrover and A. Niedzwiecki and D. Nieto and K. Nilsson and N. Nowak and R. Orito and D. Paneque and R. Paoletti and S. Pardo and Paredes, \{J. M.\} and S. Partini and Perez-Torres, \{M. A.\}",

year = "2012",

month = apr,

day = "3",

doi = "10.1051/0004-6361/201118166",

language = "English",

volume = "540",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Aleksić, J, Alvarez, EA, Antonelli, LA, Antoranz, P, Asensio, M, Backes, M, Barrio, JA, Bastieri, D, Becerra González, J, Bednarek, W, Berdyugin, A, Berger, K, Bernardini, E, Biland, A, Blanch, O, Bock, RK, Boller, A, Bonnoli, G, Borla Tridon, D, Braun, I, Bretz, T, Cañellas, A, Carmona, E, Carosi, A, Colin, P, Colombo, E, Contreras, JL, Cortina, J, Cossio, L, Covino, S, Dazzi, F, De Angelis, A, De Caneva, G, De Cea Del Pozo, E, De Lotto, B, Delgado Mendez, C, Diago Ortega, A, Doert, M, Domínguez, A, Dominis Prester, D, Dorner, D, Doro, M, Eisenacher, D, Elsaesser, D, Ferenc, D, Fonseca, MV, Font, L, Fruck, C, García López, RJ, Garczarczyk, M, Garrido, D, Giavitto, G, Godinović, N, Hadasch, D, Häfner, D, Herrero, A, Hildebrand, D, Höhne-Mönch, D, Hose, J, Hrupec, D, Jogler, T, Kellermann, H, Klepser, S, Krähenbühl, T, Krause, J, Kushida, J, La Barbera, A, Lelas, D, Leonardo, E, Lewandowska, N, Lindfors, E, Lombardi, S, López, M, López-Oramas, A, Lorenz, E, Makariev, M, Maneva, G, Mankuzhiyil, N, Mannheim, K, Maraschi, L, Mariotti, M, Martínez, M, Mazin, D, Meucci, M, Miranda, JM, Mirzoyan, R, Moldón, J, Moralejo, A, Munar-Adrover, P, Niedzwiecki, A, Nieto, D, Nilsson, K, Nowak, N, Orito, R, Paneque, D, Paoletti, R, Pardo, S, Paredes, JM, Partini, S & Perez-Torres, MA 2012, 'Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes', Astronomy and Astrophysics, vol. 540, A69. https://doi.org/10.1051/0004-6361/201118166

TY - JOUR

T1 - Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes

AU - Aleksić, J.

AU - Alvarez, E. A.

AU - Antonelli, L. A.

AU - Antoranz, P.

AU - Asensio, M.

AU - Backes, M.

AU - Barrio, J. A.

AU - Bastieri, D.

AU - Becerra González, J.

AU - Bednarek, W.

AU - Berdyugin, A.

AU - Berger, K.

AU - Bernardini, E.

AU - Biland, A.

AU - Blanch, O.

AU - Bock, R. K.

AU - Boller, A.

AU - Bonnoli, G.

AU - Borla Tridon, D.

AU - Braun, I.

AU - Bretz, T.

AU - Cañellas, A.

AU - Carmona, E.

AU - Carosi, A.

AU - Colin, P.

AU - Colombo, E.

AU - Contreras, J. L.

AU - Cortina, J.

AU - Cossio, L.

AU - Covino, S.

AU - Dazzi, F.

AU - De Angelis, A.

AU - De Caneva, G.

AU - De Cea Del Pozo, E.

AU - De Lotto, B.

AU - Delgado Mendez, C.

AU - Diago Ortega, A.

AU - Doert, M.

AU - Domínguez, A.

AU - Dominis Prester, D.

AU - Dorner, D.

AU - Doro, M.

AU - Eisenacher, D.

AU - Elsaesser, D.

AU - Ferenc, D.

AU - Fonseca, M. V.

AU - Font, L.

AU - Fruck, C.

AU - García López, R. J.

AU - Garczarczyk, M.

AU - Garrido, D.

AU - Giavitto, G.

AU - Godinović, N.

AU - Hadasch, D.

AU - Häfner, D.

AU - Herrero, A.

AU - Hildebrand, D.

AU - Höhne-Mönch, D.

AU - Hose, J.

AU - Hrupec, D.

AU - Jogler, T.

AU - Kellermann, H.

AU - Klepser, S.

AU - Krähenbühl, T.

AU - Krause, J.

AU - Kushida, J.

AU - La Barbera, A.

AU - Lelas, D.

AU - Leonardo, E.

AU - Lewandowska, N.

AU - Lindfors, E.

AU - Lombardi, S.

AU - López, M.

AU - López-Oramas, A.

AU - Lorenz, E.

AU - Makariev, M.

AU - Maneva, G.

AU - Mankuzhiyil, N.

AU - Mannheim, K.

AU - Maraschi, L.

AU - Mariotti, M.

AU - Martínez, M.

AU - Mazin, D.

AU - Meucci, M.

AU - Miranda, J. M.

AU - Mirzoyan, R.

AU - Moldón, J.

AU - Moralejo, A.

AU - Munar-Adrover, P.

AU - Niedzwiecki, A.

AU - Nieto, D.

AU - Nilsson, K.

AU - Nowak, N.

AU - Orito, R.

AU - Paneque, D.

AU - Paoletti, R.

AU - Pardo, S.

AU - Paredes, J. M.

AU - Partini, S.

AU - Perez-Torres, M. A.

PY - 2012/4/3

Y1 - 2012/4/3

N2 - We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions. We provide the widest spectra to date of the VHE components of both peaks, and these spectra extend to the energy range of satellite-borne observatories. The good resolution and background rejection of the stereoscopic MAGIC system allows us to cross-check the correctness of each spectral point of the pulsar by comparison with the corresponding (strong and well-known) Crab nebula flux. The spectra of both P1 and P2 are compatible with power laws with photon indices of 4.0 ± 0.8 (P1) and 3.42 ± 0.26 (P2), respectively, and the ratio P1/P2 between the photon counts of the two pulses is 0.54 ± 0.12. The VHE emission can be understood as an additional component produced by the inverse Compton scattering of secondary and tertiary e± pairs on IR-UV photons. © 2012 ESO.

AB - We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions. We provide the widest spectra to date of the VHE components of both peaks, and these spectra extend to the energy range of satellite-borne observatories. The good resolution and background rejection of the stereoscopic MAGIC system allows us to cross-check the correctness of each spectral point of the pulsar by comparison with the corresponding (strong and well-known) Crab nebula flux. The spectra of both P1 and P2 are compatible with power laws with photon indices of 4.0 ± 0.8 (P1) and 3.42 ± 0.26 (P2), respectively, and the ratio P1/P2 between the photon counts of the two pulses is 0.54 ± 0.12. The VHE emission can be understood as an additional component produced by the inverse Compton scattering of secondary and tertiary e± pairs on IR-UV photons. © 2012 ESO.

KW - Gamma rays: stars

KW - Pulsars: individual: Crab pulsar

UR - https://www.scopus.com/pages/publications/84859141781

U2 - 10.1051/0004-6361/201118166

DO - 10.1051/0004-6361/201118166

M3 - Article

SN - 0004-6361

VL - 540

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A69

ER -

Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes

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