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2007ApJ...669.1143A - Astrophys. J., 669, 1143-1149 (2007/November-2)

Constraints on the steady and pulsed very high energy gamma-ray emission from observations of PSR B1951+32/CTB 80 with the MAGIC telescope.

ALBERT J., ALIU E., ANDERHUB H., ANTORANZ P., ARMADA A., BAIXERAS C., BARRIO J.A., BARTKO H., BASTIERI D., BECKER J.K., BEDNAREK W., BERGER K., BIGONGIARI C., BILAND A., BOCK R.K., BORDAS P., BOSCH-RAMON V., BRETZ T., BRITVITCH I., CAMARA M., CARMONA E., CHILINGARIAN A., COARASA J.A., COMMICHAU S., CONTRERAS J.L., CORTINA J., COSTADO M.T., CURTEF V., DANIELYAN V., DAZZI F., DE ANGELIS A., DELGADO C., 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 M.V., FONT L., FUCHS M., GALANTE N., GARCIA-LOPEZ R., GARCZARCZYK M., GAUG M., GILLER M., GOEBEL F., HAKOBYAN D., HAYASHIDA M., HENGSTEBECK T., HERRERO A., HIROTANI K., HOHNE D., HOSE J., HSU C.-C., JACON P., JOGLER T., KOSYRA R., KRANICH D., KRITZER R., LAILLE A., LINDFORS E., LOMBARDI S., LONGO F., LOPEZ J., LOPEZ M., LORENZ E., MAJUMDAR P., MANEVA G., MANNHEIM K., MANSUTTI O., MARIOTTI M., MARTINEZ M., MAZIN D., MERCK C., MEUCCI M., MEYER M., MIRANDA J.M., MIRZOYAN R., MIZOBUCHI S., MORALEJO A., NIETO D., NILSSON K., NINKOVIC J., ONA-WILHELMI E., OTTE N., OYA I., PANEQUE D., PANNIELLO M., PAOLETTI R., PAREDES J.M., PASANEN M., PASCOLI D., PAUSS F., PEGNA R., PERSIC M., PERUZZO L., PICCIOLI A., POLLER M., PRANDINI E., PUCHADES N., RAYMERS A., RHODE W., RIBO M., RICO J., RISSI M., ROBERT A., RUGAMER S., SAGGION A., SANCHEZ A., SARTORI P., SCALZOTTO V., SCAPIN V., SCHMITT R., SCHWEIZER T., SHAYDUK M., SHINOZAKI K., SHORE S.N., SIDRO N., SILLANPAA A., SOBCZYNSKA D., STAMERRA A., STARK L.S., TAKALO L., TEMNIKOV P., TESCARO D., TESHIMA M., TONELLO N., TORRES D.F., TURINI N., VANKOV H., VITALE V., WAGNER R.M., WIBIG T., WITTEK W., ZANDANEL F., ZANIN R. and ZAPATERO J.

Abstract (from CDS):

We report on very high energy γ-ray observations with the MAGIC Telescope of the pulsar PSR B1951+32 and its associated nebula, CTB 80. Our data constrain the cutoff energy of the pulsar to be less than 32 GeV, assuming the pulsed γ-ray emission to be exponentially cut off. In the case that the cutoff follows a superexponential behavior, the cutoff energy can be as high as ∼60 GeV. The upper limit on the flux of pulsed γ-ray emission above 75 GeV is 4.3x10–11 photons/cm2/s, and the upper limit on the flux of steady emission above 140 GeV is 1.5x10–11 photons/cm2/s. We discuss our results in the framework of recent model predictions and other studies.

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Journal keyword(s): Acceleration of Particles - Gamma Rays: Observations - pulsars: individual (PSR B1951+32) - Radiation Mechanisms: Nonthermal

Simbad objects: 5

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