Radio detection of the supernova remnant RX J0852.0-4622

Citation
Ja. Combi et al., Radio detection of the supernova remnant RX J0852.0-4622, ASTROPHYS J, 519(2), 1999, pp. L177-L180
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004-637X → ACNP
Volume
519
Issue
2
Year of publication
1999
Part
2
Pages
L177 - L180
Database
ISI
SICI code
0004-637X(19990710)519:2<L177:RDOTSR>2.0.ZU;2-G
Abstract
The X-ray source RX J0852.0-4622 has been recently proposed as a candidate for a young nearby supernova remnant on the basis of its X-ray (greater tha n or equal to 1.3 keV) morphology, inferred internal shock velocities, and the clear detection of Ti-44 emission lines. In this Letter, we report its detection at radio wavelengths (2.4 and 1.42 GHz). The radio images match t he X-ray morphology very well and show a limb-brightened source with some e longated features protruding from the outer shell. These features could be explosion fragments similar to those detected in the Vela supernova remnant . At radio frequencies the source appears to be nonthermal, with an index [ alpha] similar to -0.3. This synchrotron emission seems to extend up to X-r ay energies, implying the existence of very high energy electrons locally a ccelerated in the remnant.