RT Journal Article
T1 Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco
A1 Antoranz Canales, Pedro
A1 Barrio Uña, Juan Abel
A1 Contreras González, José Luis
A1 Fonseca González, María Victoria
A1 López Moya, Marcos
A1 Miranda Pantoja, José Miguel
A1 Nieto Castaño, Daniel
AB The nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM) searches. Annihilation of hypothetical DM particles can result in high-energy gamma-rays, e. g., from neutralino annihilation in the supersymmetric framework. A search for a possible DM signal originating from Draco was performed with the MAGIC telescope during 2007. Analysis of the data results in a flux upper limit (2 sigma) of 1.1 x 10(-11) photons cm(-2) s(-1) for photon energies above 140 GeV, assuming a pointlike source. A comparison with predictions from supersymmetric models is also given. While our results do not constrain the mSUGRA phase parameter space, a very high flux enhancement can be ruled out.
PB UNIV CHICAGO PRESS
SN 0004-637X
YR 2008
FD 2008-05-20
LK https://hdl.handle.net/20.500.14352/50834
UL https://hdl.handle.net/20.500.14352/50834
LA eng
NO © The American Astronomical Society. We would like to thank the IAC for the excellent working conditionsat the Observatory de los Muchachos in La Palma. The support of the German BMBF and MPG, the Italian INFN, and the Spanish CICYT is gratefully acknowledged. This work was also supported by ETH research grant TH 34/043, and the PolishMNiI grant 1P03D01028.
NO German BMBF
NO German MPG
NO Italian INFN
NO Spanish CICYT
NO ETH
NO Polish MNiI
DS Docta Complutense
RD 21 abr 2025