Artículos de revistas
Variable very-high-energy gamma-ray emission from the microquasar LS I +61 303
Fecha
2006-06Registro en:
Albert, J.; Aliu, E.; Anderhub, H.; Antoranz, P.; Armada, A.; et al.; Variable very-high-energy gamma-ray emission from the microquasar LS I +61 303; American Association for the Advancement of Science; Science; 312; 5781; 6-2006; 1771-1773
0036-8075
CONICET Digital
CONICET
Autor
Albert, J.
Aliu, E.
Anderhub, H.
Antoranz, P.
Armada, A.
Asensio, M.
Baixeras, C.
Barrio, J. A.
Bartelt, M.
Bartko, H.
Bastieri, D.
Bavikadi, S. R.
Bednarek, W.
Berger, K.
Bigongiari, C.
Biland, A.
Bisesi, E.
Bock, R. K.
Bordas, P.
Bosch Ramon, Valentí
Bretz, T.
Britvitch, I.
Camara, M.
Carmona, E.
Chilingarian, A.
Ciprini, S.
Coarasa, J. A.
Romero, Gustavo Esteban
Rügamer, S.
Torres, Diego F.
Resumen
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 LS I +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.