IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Radio study of the recently discovered gamma-ray source SNR G353.6-0.7/HESSJ1731-347
Autor/es:
DUBNER G., GIACANI E., CASTELLETTI G., TERRIER R., ACERO F.
Lugar:
Bremen, Alemania
Reunión:
Simposio; 38th COSPAR Scientific Assembly; 2010
Institución organizadora:
COSPAR
Resumen:
Until recently HESS J1731-347 was one of the dark sources discovered by H.E.S.S. instrument for which no clear counterpart at other wavelengths could be identified. Short time ago, how-ever, on the basis of images from the radio Galactic Plane Survey carried out with the ATCA and Parkes radiotelescopes at 1.4 GHz and with the Molonglo synthesis instrument at 843 MHz,a faint non-thermal radio shell, the SNR G353.6-0.7, was identified positionally coinciding with the brightest hotspot of the TeV source HESS J1731-347. XMM-Newton observations covering a fraction of the SNR revealed non-thermal X-ray emission that most likely can be interpreted as synchrotron emission from high-energy electrons accelerated by the SNR. This makes HESS J1731-347/G353.6-0.7 a new object in the small but growing class of shell-type SNRs with TeV emission, an important class because they can prove the role of SNRs as cosmic accelerators. We report on a new radio study of this source carried out using the Very Large Array (VLA, NRAO) at 1.4 GHz. We present the results of a mosaic of 18 di ferent VLA pointings covering an area over 9 square degrees in size, along with a comparison with the X-ray emission.