MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context

Aims. We present a study of the very high-energy (VHE; E> 100 GeV) γ-ray emission of the blazar PKS 1424+240 observed with the MAGIC telescopes. The primary aim of this paper is the multiwavelength spectral characterization and modeling of this blazar, which is made particularly interesting by th...

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Main Authors:	Aleksic, J., Ansoldi, S., Antonelli, L., Antoranz, P., Babic, A., Bangale, P., Barres de Almeida, U., Barrio, J., Becerra Gonzalez, J., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Blanch Bigas, O., Bock, R., Bonnefoy, S., Bonnoli, G., Borracci, F., Bretz, T., Carmona, E., Carosi, A., Carreto Fidalgo, D., Colin, P., Colombo, E., Contreras, J., Cortina, J., Covino, S., Da Vela, P., Dazzi, F., de Angelis, A., De Caneva, G., De Lotto, B., Delgado Mendez, C., Doert, M., Dominguez, A., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Eisenacher, D., Elsaesser, D., Farina, E., Ferenc, D., Fonseca, M., Font, L., Frantzen, K., Fruck, C., Garcia López, R., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Giavitto, G., Godinovic, N., González Muñoz, A., Gozzini, S., Hadasch, D., Hayashida, M., Herrero, A., Hildebrand, D., Hose, J., Hrupec, D., Idec, W., Kadenius, V., Kellermann, K., Kodani, K., Konno, Y., Krause, J., Kubo, H., Kushida, J., La Barbera, A., Lelas, D., Lewandowska, N., Lindfors, E., Lombardi, S., López, M., López-Coto, R., López-Oramas, A., Lorenz, E., Lozano, I., Makariev, M., Mallot, K., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Marcote, B., Mariotti, M., Martínez, M., Mazin, D., Menzel, U., Meucci, M., Miranda, J., Mirzoyan, R., Moralejo Olaizola, A., Munar-Adrover, P., Nakajima, D., Niedzwiecki, A., Nilsson, K., Nishijima, K., Nowak, N., Orito, R., Overkemping, A., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J., Paredes-Fortuny, X., Partini, S., Persic, M., Prada, F., Prada Moroni, P., Prandini, E., Preziuso, S., Puljak, I., Reinthal, R., Rhode, W., Ribo, M., Rico, J., Rodriguez Garcia, J., Rugamer, S., Saggion, A., Saito, T., Saito, K., Salvati, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shore, S., Sillanpää, A., Sitarek, J., Snidaric, I., Sobczynska, D., Spanier, F., Stamatescu, V., Stamerra, A., Steinbring, T., Storz, J., Sun, S., Suric, T., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzic, T., Tescaro, D., Teshima, M., Thaele, J., Tibolla, Omar, Torres, D., Toyama, T., Treves, A., Uellenbeck, M., Vogler, P., Wagner, R., Zandanel, F., Zanin, R., Cutini, S., Gasparrini, D., Furniss, A., Hovatta, T., Kangas, T., Kankare, E., Kotilainen, J., Lister, M., Lahteenmaki, A., Max-Moerbeck, W., Pavlidou, V., Readhead, A., Richards, J.
Format:	Journal Article
Published:	EDP Sciences 2014
Subjects:	gamma rays: galaxies / BL Lacertae objects: individual: PKS 1424+240
Online Access:	http://hdl.handle.net/20.500.11937/30931

_version_	1848753232221831168
author	Aleksic, J. Ansoldi, S. Antonelli, L. Antoranz, P. Babic, A. Bangale, P. Barres de Almeida, U. Barrio, J. Becerra Gonzalez, J. Bednarek, W. Berger, K. Bernardini, E. Biland, A. Blanch Bigas, O. Bock, R. Bonnefoy, S. Bonnoli, G. Borracci, F. Bretz, T. Carmona, E. Carosi, A. Carreto Fidalgo, D. Colin, P. Colombo, E. Contreras, J. Cortina, J. Covino, S. Da Vela, P. Dazzi, F. de Angelis, A. De Caneva, G. De Lotto, B. Delgado Mendez, C. Doert, M. Dominguez, A. Dominis Prester, D. Dorner, D. Doro, M. Einecke, S. Eisenacher, D. Elsaesser, D. Farina, E. Ferenc, D. Fonseca, M. Font, L. Frantzen, K. Fruck, C. Garcia López, R. Garczarczyk, M. Garrido Terrats, D. Gaug, M. Giavitto, G. Godinovic, N. González Muñoz, A. Gozzini, S. Hadasch, D. Hayashida, M. Herrero, A. Hildebrand, D. Hose, J. Hrupec, D. Idec, W. Kadenius, V. Kellermann, K. Kodani, K. Konno, Y. Krause, J. Kubo, H. Kushida, J. La Barbera, A. Lelas, D. Lewandowska, N. Lindfors, E. Lombardi, S. López, M. López-Coto, R. López-Oramas, A. Lorenz, E. Lozano, I. Makariev, M. Mallot, K. Maneva, G. Mankuzhiyil, N. Mannheim, K. Maraschi, L. Marcote, B. Mariotti, M. Martínez, M. Mazin, D. Menzel, U. Meucci, M. Miranda, J. Mirzoyan, R. Moralejo Olaizola, A. Munar-Adrover, P. Nakajima, D. Niedzwiecki, A. Nilsson, K. Nishijima, K. Nowak, N. Orito, R. Overkemping, A. Paiano, S. Palatiello, M. Paneque, D. Paoletti, R. Paredes, J. Paredes-Fortuny, X. Partini, S. Persic, M. Prada, F. Prada Moroni, P. Prandini, E. Preziuso, S. Puljak, I. Reinthal, R. Rhode, W. Ribo, M. Rico, J. Rodriguez Garcia, J. Rugamer, S. Saggion, A. Saito, T. Saito, K. Salvati, M. Satalecka, K. Scalzotto, V. Scapin, V. Schultz, C. Schweizer, T. Shore, S. Sillanpää, A. Sitarek, J. Snidaric, I. Sobczynska, D. Spanier, F. Stamatescu, V. Stamerra, A. Steinbring, T. Storz, J. Sun, S. Suric, T. Takalo, L. Takami, H. Tavecchio, F. Temnikov, P. Terzic, T. Tescaro, D. Teshima, M. Thaele, J. Tibolla, Omar Torres, D. Toyama, T. Treves, A. Uellenbeck, M. Vogler, P. Wagner, R. Zandanel, F. Zanin, R. Cutini, S. Gasparrini, D. Furniss, A. Hovatta, T. Kangas, T. Kankare, E. Kotilainen, J. Lister, M. Lahteenmaki, A. Max-Moerbeck, W. Pavlidou, V. Readhead, A. Richards, J.
author_facet	Aleksic, J. Ansoldi, S. Antonelli, L. Antoranz, P. Babic, A. Bangale, P. Barres de Almeida, U. Barrio, J. Becerra Gonzalez, J. Bednarek, W. Berger, K. Bernardini, E. Biland, A. Blanch Bigas, O. Bock, R. Bonnefoy, S. Bonnoli, G. Borracci, F. Bretz, T. Carmona, E. Carosi, A. Carreto Fidalgo, D. Colin, P. Colombo, E. Contreras, J. Cortina, J. Covino, S. Da Vela, P. Dazzi, F. de Angelis, A. De Caneva, G. De Lotto, B. Delgado Mendez, C. Doert, M. Dominguez, A. Dominis Prester, D. Dorner, D. Doro, M. Einecke, S. Eisenacher, D. Elsaesser, D. Farina, E. Ferenc, D. Fonseca, M. Font, L. Frantzen, K. Fruck, C. Garcia López, R. Garczarczyk, M. Garrido Terrats, D. Gaug, M. Giavitto, G. Godinovic, N. González Muñoz, A. Gozzini, S. Hadasch, D. Hayashida, M. Herrero, A. Hildebrand, D. Hose, J. Hrupec, D. Idec, W. Kadenius, V. Kellermann, K. Kodani, K. Konno, Y. Krause, J. Kubo, H. Kushida, J. La Barbera, A. Lelas, D. Lewandowska, N. Lindfors, E. Lombardi, S. López, M. López-Coto, R. López-Oramas, A. Lorenz, E. Lozano, I. Makariev, M. Mallot, K. Maneva, G. Mankuzhiyil, N. Mannheim, K. Maraschi, L. Marcote, B. Mariotti, M. Martínez, M. Mazin, D. Menzel, U. Meucci, M. Miranda, J. Mirzoyan, R. Moralejo Olaizola, A. Munar-Adrover, P. Nakajima, D. Niedzwiecki, A. Nilsson, K. Nishijima, K. Nowak, N. Orito, R. Overkemping, A. Paiano, S. Palatiello, M. Paneque, D. Paoletti, R. Paredes, J. Paredes-Fortuny, X. Partini, S. Persic, M. Prada, F. Prada Moroni, P. Prandini, E. Preziuso, S. Puljak, I. Reinthal, R. Rhode, W. Ribo, M. Rico, J. Rodriguez Garcia, J. Rugamer, S. Saggion, A. Saito, T. Saito, K. Salvati, M. Satalecka, K. Scalzotto, V. Scapin, V. Schultz, C. Schweizer, T. Shore, S. Sillanpää, A. Sitarek, J. Snidaric, I. Sobczynska, D. Spanier, F. Stamatescu, V. Stamerra, A. Steinbring, T. Storz, J. Sun, S. Suric, T. Takalo, L. Takami, H. Tavecchio, F. Temnikov, P. Terzic, T. Tescaro, D. Teshima, M. Thaele, J. Tibolla, Omar Torres, D. Toyama, T. Treves, A. Uellenbeck, M. Vogler, P. Wagner, R. Zandanel, F. Zanin, R. Cutini, S. Gasparrini, D. Furniss, A. Hovatta, T. Kangas, T. Kankare, E. Kotilainen, J. Lister, M. Lahteenmaki, A. Max-Moerbeck, W. Pavlidou, V. Readhead, A. Richards, J.
author_sort	Aleksic, J.
building	Curtin Institutional Repository
collection	Online Access
description	Aims. We present a study of the very high-energy (VHE; E> 100 GeV) γ-ray emission of the blazar PKS 1424+240 observed with the MAGIC telescopes. The primary aim of this paper is the multiwavelength spectral characterization and modeling of this blazar, which is made particularly interesting by the recent discovery of a lower limit of its redshift of z ≥ 0.6 and makes it a promising candidate to be the most distant VHE source. Methods. The source has been observed with the MAGIC telescopes in VHE γ rays for a total observation time of ~33.6 h from 2009 to 2011. A detailed analysis of its γ-ray spectrum and time evolution has been carried out. Moreover, we have collected and analyzed simultaneous and quasi-simultaneous multiwavelength data. Results. The source was marginally detected in VHE γ rays during 2009 and 2010, and later, the detection was confirmed during an optical outburst in 2011. The combined significance of the stacked sample is ~7.2σ. The differential spectra measured during the different campaigns can be described by steep power laws with the indices ranging from 3.5 ± 1.2 to 5.0 ± 1.7. The MAGIC spectra corrected for the absorption due to the extragalactic background light connect smoothly, within systematic errors, with the mean spectrum in 2009–2011 observed at lower energies by the Fermi-LAT. The absorption-corrected MAGIC spectrum is flat with no apparent turn down up to 400 GeV. The multiwavelength light curve shows increasing flux in radio and optical bands that could point to a common origin from the same region of the jet. The large separation between the two peaks of the constructed non-simultaneous spectral energy distribution also requires an extremely high Doppler factor if a one zone synchrotron self-Compton model is applied. We find that a two-component synchrotron self-Compton model describes the spectral energy distribution of the source well, if the source is located at z ~ 0.6.
first_indexed	2025-11-14T08:21:14Z
format	Journal Article
id	curtin-20.500.11937-30931
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T08:21:14Z
publishDate	2014
publisher	EDP Sciences
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-309312023-02-22T06:24:16Z MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context Aleksic, J. Ansoldi, S. Antonelli, L. Antoranz, P. Babic, A. Bangale, P. Barres de Almeida, U. Barrio, J. Becerra Gonzalez, J. Bednarek, W. Berger, K. Bernardini, E. Biland, A. Blanch Bigas, O. Bock, R. Bonnefoy, S. Bonnoli, G. Borracci, F. Bretz, T. Carmona, E. Carosi, A. Carreto Fidalgo, D. Colin, P. Colombo, E. Contreras, J. Cortina, J. Covino, S. Da Vela, P. Dazzi, F. de Angelis, A. De Caneva, G. De Lotto, B. Delgado Mendez, C. Doert, M. Dominguez, A. Dominis Prester, D. Dorner, D. Doro, M. Einecke, S. Eisenacher, D. Elsaesser, D. Farina, E. Ferenc, D. Fonseca, M. Font, L. Frantzen, K. Fruck, C. Garcia López, R. Garczarczyk, M. Garrido Terrats, D. Gaug, M. Giavitto, G. Godinovic, N. González Muñoz, A. Gozzini, S. Hadasch, D. Hayashida, M. Herrero, A. Hildebrand, D. Hose, J. Hrupec, D. Idec, W. Kadenius, V. Kellermann, K. Kodani, K. Konno, Y. Krause, J. Kubo, H. Kushida, J. La Barbera, A. Lelas, D. Lewandowska, N. Lindfors, E. Lombardi, S. López, M. López-Coto, R. López-Oramas, A. Lorenz, E. Lozano, I. Makariev, M. Mallot, K. Maneva, G. Mankuzhiyil, N. Mannheim, K. Maraschi, L. Marcote, B. Mariotti, M. Martínez, M. Mazin, D. Menzel, U. Meucci, M. Miranda, J. Mirzoyan, R. Moralejo Olaizola, A. Munar-Adrover, P. Nakajima, D. Niedzwiecki, A. Nilsson, K. Nishijima, K. Nowak, N. Orito, R. Overkemping, A. Paiano, S. Palatiello, M. Paneque, D. Paoletti, R. Paredes, J. Paredes-Fortuny, X. Partini, S. Persic, M. Prada, F. Prada Moroni, P. Prandini, E. Preziuso, S. Puljak, I. Reinthal, R. Rhode, W. Ribo, M. Rico, J. Rodriguez Garcia, J. Rugamer, S. Saggion, A. Saito, T. Saito, K. Salvati, M. Satalecka, K. Scalzotto, V. Scapin, V. Schultz, C. Schweizer, T. Shore, S. Sillanpää, A. Sitarek, J. Snidaric, I. Sobczynska, D. Spanier, F. Stamatescu, V. Stamerra, A. Steinbring, T. Storz, J. Sun, S. Suric, T. Takalo, L. Takami, H. Tavecchio, F. Temnikov, P. Terzic, T. Tescaro, D. Teshima, M. Thaele, J. Tibolla, Omar Torres, D. Toyama, T. Treves, A. Uellenbeck, M. Vogler, P. Wagner, R. Zandanel, F. Zanin, R. Cutini, S. Gasparrini, D. Furniss, A. Hovatta, T. Kangas, T. Kankare, E. Kotilainen, J. Lister, M. Lahteenmaki, A. Max-Moerbeck, W. Pavlidou, V. Readhead, A. Richards, J. gamma rays: galaxies / BL Lacertae objects: individual: PKS 1424+240 Aims. We present a study of the very high-energy (VHE; E> 100 GeV) γ-ray emission of the blazar PKS 1424+240 observed with the MAGIC telescopes. The primary aim of this paper is the multiwavelength spectral characterization and modeling of this blazar, which is made particularly interesting by the recent discovery of a lower limit of its redshift of z ≥ 0.6 and makes it a promising candidate to be the most distant VHE source. Methods. The source has been observed with the MAGIC telescopes in VHE γ rays for a total observation time of ~33.6 h from 2009 to 2011. A detailed analysis of its γ-ray spectrum and time evolution has been carried out. Moreover, we have collected and analyzed simultaneous and quasi-simultaneous multiwavelength data. Results. The source was marginally detected in VHE γ rays during 2009 and 2010, and later, the detection was confirmed during an optical outburst in 2011. The combined significance of the stacked sample is ~7.2σ. The differential spectra measured during the different campaigns can be described by steep power laws with the indices ranging from 3.5 ± 1.2 to 5.0 ± 1.7. The MAGIC spectra corrected for the absorption due to the extragalactic background light connect smoothly, within systematic errors, with the mean spectrum in 2009–2011 observed at lower energies by the Fermi-LAT. The absorption-corrected MAGIC spectrum is flat with no apparent turn down up to 400 GeV. The multiwavelength light curve shows increasing flux in radio and optical bands that could point to a common origin from the same region of the jet. The large separation between the two peaks of the constructed non-simultaneous spectral energy distribution also requires an extremely high Doppler factor if a one zone synchrotron self-Compton model is applied. We find that a two-component synchrotron self-Compton model describes the spectral energy distribution of the source well, if the source is located at z ~ 0.6. 2014 Journal Article http://hdl.handle.net/20.500.11937/30931 10.1051/0004-6361/201423364 EDP Sciences unknown
spellingShingle	gamma rays: galaxies / BL Lacertae objects: individual: PKS 1424+240 Aleksic, J. Ansoldi, S. Antonelli, L. Antoranz, P. Babic, A. Bangale, P. Barres de Almeida, U. Barrio, J. Becerra Gonzalez, J. Bednarek, W. Berger, K. Bernardini, E. Biland, A. Blanch Bigas, O. Bock, R. Bonnefoy, S. Bonnoli, G. Borracci, F. Bretz, T. Carmona, E. Carosi, A. Carreto Fidalgo, D. Colin, P. Colombo, E. Contreras, J. Cortina, J. Covino, S. Da Vela, P. Dazzi, F. de Angelis, A. De Caneva, G. De Lotto, B. Delgado Mendez, C. Doert, M. Dominguez, A. Dominis Prester, D. Dorner, D. Doro, M. Einecke, S. Eisenacher, D. Elsaesser, D. Farina, E. Ferenc, D. Fonseca, M. Font, L. Frantzen, K. Fruck, C. Garcia López, R. Garczarczyk, M. Garrido Terrats, D. Gaug, M. Giavitto, G. Godinovic, N. González Muñoz, A. Gozzini, S. Hadasch, D. Hayashida, M. Herrero, A. Hildebrand, D. Hose, J. Hrupec, D. Idec, W. Kadenius, V. Kellermann, K. Kodani, K. Konno, Y. Krause, J. Kubo, H. Kushida, J. La Barbera, A. Lelas, D. Lewandowska, N. Lindfors, E. Lombardi, S. López, M. López-Coto, R. López-Oramas, A. Lorenz, E. Lozano, I. Makariev, M. Mallot, K. Maneva, G. Mankuzhiyil, N. Mannheim, K. Maraschi, L. Marcote, B. Mariotti, M. Martínez, M. Mazin, D. Menzel, U. Meucci, M. Miranda, J. Mirzoyan, R. Moralejo Olaizola, A. Munar-Adrover, P. Nakajima, D. Niedzwiecki, A. Nilsson, K. Nishijima, K. Nowak, N. Orito, R. Overkemping, A. Paiano, S. Palatiello, M. Paneque, D. Paoletti, R. Paredes, J. Paredes-Fortuny, X. Partini, S. Persic, M. Prada, F. Prada Moroni, P. Prandini, E. Preziuso, S. Puljak, I. Reinthal, R. Rhode, W. Ribo, M. Rico, J. Rodriguez Garcia, J. Rugamer, S. Saggion, A. Saito, T. Saito, K. Salvati, M. Satalecka, K. Scalzotto, V. Scapin, V. Schultz, C. Schweizer, T. Shore, S. Sillanpää, A. Sitarek, J. Snidaric, I. Sobczynska, D. Spanier, F. Stamatescu, V. Stamerra, A. Steinbring, T. Storz, J. Sun, S. Suric, T. Takalo, L. Takami, H. Tavecchio, F. Temnikov, P. Terzic, T. Tescaro, D. Teshima, M. Thaele, J. Tibolla, Omar Torres, D. Toyama, T. Treves, A. Uellenbeck, M. Vogler, P. Wagner, R. Zandanel, F. Zanin, R. Cutini, S. Gasparrini, D. Furniss, A. Hovatta, T. Kangas, T. Kankare, E. Kotilainen, J. Lister, M. Lahteenmaki, A. Max-Moerbeck, W. Pavlidou, V. Readhead, A. Richards, J. MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context
title	MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context
title_full	MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context
title_fullStr	MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context
title_full_unstemmed	MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context
title_short	MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context
title_sort	magic long-term study of the distant tev blazar pks 1424+240 in a multiwavelength context
topic	gamma rays: galaxies / BL Lacertae objects: individual: PKS 1424+240
url	http://hdl.handle.net/20.500.11937/30931

MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context

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