The gamma -ray source 2EGS J1703-6302: a new supernova remnant in interaction with an HI cloud?

COMBI, J. A.; ROMERO, G. E.; BENAGLIA, P.

ASTRONOMY AND ASTROPHYSICS LETTERS

EDP Sciences

Lugar: Les Ulis Cedex A; Año: 1998 vol. 333 p. 91 - 94

We present observational evidence supporting a picture where the gamma -ray source 2EGS J1703-6302 is the result of the interaction between cosmic rays (CRs) accelerated in a supernova remnant (SNR) and a nearby HI cloud. The SNR has been disclosed by filtering the diffuse disk emission from new 1.42 GHz continuum observations of the radio field around 2EGS J1703-6302. The cloud was detected through neutral hydrogen line observations of the same area of the sky. The CR enhancement in the SNR with respect to the local value is about a factor ~ 44.