Variable very-high-energy gamma-ray emission from the microquasar LS I +61 303

Albert, J.; Aliu, E.; Anderhub, H.; Antoranz, P.; Armada, A.; Asensio, M.; Baixeras, C.; Barrio, Ja; Bartelt, M.; Bartko, H.; Bastieri, D.; Bavikadi, Sr; Bednarek, W.; Berger, K.; Bigongiari, C.; Biland, A.; Bisesi, E.; Bock, Rk; Bordas, P.; Bosch Ramon, V.; Bretz, T.; Britvitch, I.; Camara, M.; Carmona, E.; Chilingarian, A.; Ciprini, S.; Coarasa, Ja; Commichau, S.; Contreras, Jl; Cortina, J.; Curtef, V.; Danielyan, V.; Dazzi, F.; De Angelis, Alessandro; de los Reyes, R.; De Lotto, Barbara; Domingo Santamaria, E.; Dorner, D.; Doro, M.; Errando, M.; Fagiolini, M.; Ferenc, D.; Fernandez, E.; Firpo, R.; Flix, J.; Fonseca, Mv; Font, L.; Fuchs, M.; Galante, N.; Garczarczyk, M.; Gaug, M.; Giller, M.; Goebel, F.; Hakobyan, D.; Hayashida, M.; Hengstebeck, T.; Hohne, D.; Hose, J.; Hsu, Cc; Isar, Pg; Jacon, P.; Kalekin, O.; Kosyra, R.; Kranich, D.; Laatiaoui, M.; Laille, A.; Lenisa, T.; Liebing, P.; Lindfors, E.; Lombardi, S.; Longo, F.; Lopez, J.; Lopez, M.; Lorenz, E.; Lucarelli, F.; Majumdar, P.; Maneva, G.; Mannheim, K.; Mansutti, O.; Mariotti, M.; Martinez, M.; Mase, K.; Mazin, D.; Merck, C.; Meucci, M.; Meyer, M.; Miranda, Jm; Mirzoyan, R.; Mizobuchi, S.; Moralejo, A.; Nilsson, K.; Ona Wilhelmi, E.; Orduna, R.; Otte, N.; Oya, I.; Paneque, D.; Paoletti, R.; Paredes, Jm; Pasanen, M.; Pascoli, D.; Pauss, F.; Pavel, N.; Pegna, R.; Persic, M.; Peruzzo, L.; Piccioli, A.; Poller, M.; Pooley, G.; Prandini, E.; Raymers, A.; Rhode, W.; Ribo, M.; Rico, J.; Riegel, B.; Rissi, M.; Robert, A.; Romero, Ge; Rugamer, S.; Saggion, A.; Sanchez, A.; Sartori, P.; Scalzotto, V.; Scapin, V.; Schmitt, R.; Schweizer, T.; Shayduk, M.; Shinozaki, K.; Shore, Sn; Sidro, N.; Sillanpaa, A.; Sobczynska, D.; Stamerra, A.; Stark, Ls; Takalo, L.; Temnikov, P.; Tescaro, D.; Teshima, M.; Tonello, N.; Torres, A.; Torres, Df; Turini, N.; Vankov, H.; Vitale, V.; Wagner, Rm; Wibig, T.; Wittek, W.; Zanin, R.; Zapatero, J.

doi:10.1126/science.1128177

Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and can be used to elucidate the physics of relativistic jets. We report the detection of variable gamma-ray emission above 100 gigaelectron volts from the microquasar LSI+61 303. Six orbital cycles were recorded. Several detections occur at a similar orbital phase, which suggests that the emission is periodic. The strongest gamma-ray emission is not observed when the two stars are closest to one another, implying a strong orbital modulation of the emission or absorption processes.

Variable very-high-energy gamma-ray emission from the microquasar LS I +61 303 / Albert J ; Aliu E ; Anderhub H ; Antoranz P ; Armada A ; Asensio M ; Baixeras C ; Barrio JA ; Bartelt M ; Bartko H ; Bastieri D ; Bavikadi SR ; Bednarek W ; Berger K ; Bigongiari C ; Biland A ; Bisesi E ; Bock RK ; Bordas P ; Bosch-Ramon V ; Bretz T ; Britvitch I ; Camara M ; Carmona E ; Chilingarian A ; Ciprini S ; Coarasa JA ; Commichau S ; Contreras JL ; Cortina J ; Curtef V ; Danielyan V ; Dazzi F ; De Angelis A ; de los Reyes R ; De Lotto B ; Domingo-Santamaria E ; Dorner D ; Doro M ; Errando M ; Fagiolini M ; Ferenc D ; Fernandez E ; Firpo R ; Flix J ; Fonseca MV ; Font L ; Fuchs M ; Galante N ; Garczarczyk M ; Gaug M ; Giller M ; Goebel F ; Hakobyan D ; Hayashida M ; Hengstebeck T ; Hohne D ; Hose J ; Hsu CC ; Isar PG ; Jacon P ; Kalekin O ; Kosyra R ; Kranich D ; Laatiaoui M ; Laille A ; Lenisa T ; Liebing P ; Lindfors E ; Lombardi S ; Longo F ; Lopez J ; Lopez M ; Lorenz E ; Lucarelli F ; Majumdar P ; Maneva G ; Mannheim K ; Mansutti O ; Mariotti M ; Martinez M ; Mase K ; Mazin D ; Merck C ; Meucci M ; Meyer M ; Miranda JM ; Mirzoyan R ; Mizobuchi S ; Moralejo A ; Nilsson K ; Ona-Wilhelmi E ; Orduna R ; Otte N ; Oya I ; Paneque D ; Paoletti R ; Paredes JM ; Pasanen M ; Pascoli D ; Pauss F ; Pavel N ; Pegna R ; Persic M ; Peruzzo L ; Piccioli A ; Poller M ; Pooley G ; Prandini E ; Raymers A ; Rhode W ; Ribo M ; Rico J ; Riegel B ; Rissi M ; Robert A ; Romero GE ; Rugamer S ; Saggion A ; Sanchez A ; Sartori P ; Scalzotto V ; Scapin V ; Schmitt R ; Schweizer T ; Shayduk M ; Shinozaki K ; Shore SN ; Sidro N ; Sillanpaa A ; Sobczynska D ; Stamerra A ; Stark LS ; Takalo L ; Temnikov P ; Tescaro D ; Teshima M ; Tonello N ; Torres A ; Torres DF ; Turini N ; Vankov H ; Vitale V ; Wagner RM ; Wibig T ; Wittek W ; Zanin R ; Zapatero J. - In: SCIENCE. - ISSN 0036-8075. - 312(2006), pp. 1771-1773.

Titolo:	Variable very-high-energy gamma-ray emission from the microquasar LS I +61 303
Autori:	Albert J. Aliu E. Anderhub H. Antoranz P. Armada A. Asensio M. Baixeras C. Barrio JA Bartelt M. Bartko H. Bastieri D. Bavikadi SR Bednarek W. Berger K. Bigongiari C. Biland A. Bisesi E. Bock RK Bordas P. Bosch Ramon V. Bretz T. Britvitch I. Camara M. Carmona E. Chilingarian A. Ciprini S. Coarasa JA Commichau S. Contreras JL Cortina J. Curtef V. Danielyan V. Dazzi F. DE ANGELIS, Alessandro de los Reyes R. DE LOTTO, Barbara Domingo Santamaria E. Dorner D. Doro M. Errando M. Fagiolini M. Ferenc D. Fernandez E. Firpo R. Flix J. Fonseca MV Font L. Fuchs M. Galante N. Garczarczyk M. Gaug M. Giller M. Goebel F. Hakobyan D. Hayashida M. Hengstebeck T. Hohne D. Hose J. Hsu CC Isar PG Jacon P. Kalekin O. Kosyra R. Kranich D. Laatiaoui M. Laille A. Lenisa T. Liebing P. Lindfors E. Lombardi S. Longo F. Lopez J. Lopez M. Lorenz E. Lucarelli F. Majumdar P. Maneva G. Mannheim K. Mansutti O. Mariotti M. Martinez M. Mase K. Mazin D. Merck C. Meucci M. Meyer M. Miranda JM Mirzoyan R. Mizobuchi S. Moralejo A. Nilsson K. Ona Wilhelmi E. Orduna R. Otte N. Oya I. Paneque D. Paoletti R. Paredes JM Pasanen M. Pascoli D. Pauss F. Pavel N. Pegna R. Persic M. Peruzzo L. Piccioli A. Poller M. Pooley G. Prandini E. Raymers A. Rhode W. Ribo M. Rico J. Riegel B. Rissi M. Robert A. Romero GE Rugamer S. Saggion A. Sanchez A. Sartori P. Scalzotto V. Scapin V. Schmitt R. Schweizer T. Shayduk M. Shinozaki K. Shore SN Sidro N. Sillanpaa A. Sobczynska D. Stamerra A. Stark LS Takalo L. Temnikov P. Tescaro D. Teshima M. Tonello N. Torres A. Torres DF Turini N. Vankov H. Vitale V. Wagner RM Wibig T. Wittek W. Zanin R. Zapatero J. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2006
Rivista:	SCIENCE
Citazione:	Variable very-high-energy gamma-ray emission from the microquasar LS I +61 303 / Albert J ; Aliu E ; Anderhub H ; Antoranz P ; Armada A ; Asensio M ; Baixeras C ; Barrio JA ; Bartelt M ; Bartko H ; Bastieri D ; Bavikadi SR ; Bednarek W ; Berger K ; Bigongiari C ; Biland A ; Bisesi E ; Bock RK ; Bordas P ; Bosch-Ramon V ; Bretz T ; Britvitch I ; Camara M ; Carmona E ; Chilingarian A ; Ciprini S ; Coarasa JA ; Commichau S ; Contreras JL ; Cortina J ; Curtef V ; Danielyan V ; Dazzi F ; De Angelis A ; de los Reyes R ; De Lotto B ; Domingo-Santamaria E ; Dorner D ; Doro M ; Errando M ; Fagiolini M ; Ferenc D ; Fernandez E ; Firpo R ; Flix J ; Fonseca MV ; Font L ; Fuchs M ; Galante N ; Garczarczyk M ; Gaug M ; Giller M ; Goebel F ; Hakobyan D ; Hayashida M ; Hengstebeck T ; Hohne D ; Hose J ; Hsu CC ; Isar PG ; Jacon P ; Kalekin O ; Kosyra R ; Kranich D ; Laatiaoui M ; Laille A ; Lenisa T ; Liebing P ; Lindfors E ; Lombardi S ; Longo F ; Lopez J ; Lopez M ; Lorenz E ; Lucarelli F ; Majumdar P ; Maneva G ; Mannheim K ; Mansutti O ; Mariotti M ; Martinez M ; Mase K ; Mazin D ; Merck C ; Meucci M ; Meyer M ; Miranda JM ; Mirzoyan R ; Mizobuchi S ; Moralejo A ; Nilsson K ; Ona-Wilhelmi E ; Orduna R ; Otte N ; Oya I ; Paneque D ; Paoletti R ; Paredes JM ; Pasanen M ; Pascoli D ; Pauss F ; Pavel N ; Pegna R ; Persic M ; Peruzzo L ; Piccioli A ; Poller M ; Pooley G ; Prandini E ; Raymers A ; Rhode W ; Ribo M ; Rico J ; Riegel B ; Rissi M ; Robert A ; Romero GE ; Rugamer S ; Saggion A ; Sanchez A ; Sartori P ; Scalzotto V ; Scapin V ; Schmitt R ; Schweizer T ; Shayduk M ; Shinozaki K ; Shore SN ; Sidro N ; Sillanpaa A ; Sobczynska D ; Stamerra A ; Stark LS ; Takalo L ; Temnikov P ; Tescaro D ; Teshima M ; Tonello N ; Torres A ; Torres DF ; Turini N ; Vankov H ; Vitale V ; Wagner RM ; Wibig T ; Wittek W ; Zanin R ; Zapatero J. - In: SCIENCE. - ISSN 0036-8075. - 312(2006), pp. 1771-1773.
Abstract:	Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and can be used to elucidate the physics of relativistic jets. We report the detection of variable gamma-ray emission above 100 gigaelectron volts from the microquasar LSI+61 303. Six orbital cycles were recorded. Several detections occur at a similar orbital phase, which suggests that the emission is periodic. The strongest gamma-ray emission is not observed when the two stars are closest to one another, implying a strong orbital modulation of the emission or absorption processes.
Handle:	http://hdl.handle.net/11390/882591
Appare nelle tipologie:	1.1 Articolo in rivista

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