Discovery of X-rays from the composite supernova remnant G0.9+0.1 with the BeppoSAX satellite

S. Mereghetti (1), L. Sidoli(1,2), G.L. Israel(3,4)

(1) Istituto di Fisica Cosmica del C.N.R., Via Bassini 15, I-20133 Milano, Italy;, e-mail: (sandro, sidoli)@ifctr.mi.cnr.it
(2) Dipartimento di Fisica, Universita di Milano, Via Celoria 16, I-20133 Milano, Italy
(3) Osservatorio Astronomico di Roma, Via dell'Osservatorio 2, I-00040 Monteporzio Catone (Roma), Italy
(4) Affiliated to I.C.R.A.

Paper: to appear in A&A Letters, 1997

Abstract:

Using the BeppoSAX satellite we have obtained the first secure X-ray detection of the supernova remnant G0.9+0.1. The 1-10 keV spectrum can be described with an absorbed power law with alpha ~ 3 and N__H~3*10²³cm^-2. The high column density supports a distance similar to that of the Galactic Center. The X-ray emission, with a luminosity L_X ~ 10³⁵ d_10² erg s^-1, coincides with the central radio core, confirming the composite nature of this remnant. Though a search for periodic pulsations gave a negative result, the observed X-rays are probably related to the presence of a young radio pulsar at the center of G0.9+0.1.

Preprints available from the authors at sidoli@zeus.ifctr.mi.cnr.it , or the raw TeX (no figures) if you click here.

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