RT Journal Article
T1 Constraints on the steady and pulsed very high energy gamma-ray emission from observations of PSR B1951+32/CTB 80 with the Magic telescope
A1 Antoranz Canales, Pedro
A1 Barrio Uña, Juan Abel
A1 Contreras González, José Luis
A1 Fonseca González, Mª Victoria
A1 López Moya, Marcos
A1 Miranda Pantoja, José Miguel
A1 Nieto, Daniel
AB We report on very high energy gamma-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 gamma-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 similar to 60 GeV. The upper limit on the flux of pulsed gamma-ray emission above 75 GeV is 4.3; 10(-11) photons cm(-2) s(-1), and the upper limit on the flux of steady emission above 140 GeV is 1.5; 10(-11) photons cm(-2) s(-1). We discuss our results in the framework of recent model predictions and other studies.
PB IOP Publishing
SN 0004-637X
YR 2007
FD 2007-11-10
LK https://hdl.handle.net/20.500.14352/50891
UL https://hdl.handle.net/20.500.14352/50891
LA eng
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NO © The American Astronomical Society. We would like to thank the IAC for the excellent working conditions on the La Palma Observatory Roque de los Muchachos. We are grateful to the RXTE ASMteamfor their quick-look results. The support of the German BMBF andMPG, the Italian INFN, and the Spanish CICYT is gratefully acknowledged. This workwas also supported by ETH research grant TH-34/04-3 and byPolish grant MNiI 1P03D01028. In addition, the authors wantto thank Deirdre Horan, Martin Tluczykont, and Frédéric Piron for providing Mrk 501 data from WHIPPLE, HEGRA CT1,and HEGRA CT System and CAT, respectively, and for usefuldiscussions.
NO German BMBF
NO German MPG
NO Italian INFN
NO Spanish CICYT
NO ETH
NO Polish grant MNiI
DS Docta Complutense
RD 30 abr 2024