Microquasar jets in the supernova remnant G11.2-0.3

作者：Glushak A P^*

来源：Astronomy Reports, 2014, 58(1): 6-15.

DOI：10.1134/S1063772914010028

The radio and X-ray fine structure of the supernova remnant G11.2-0.3 is analyzed using VLA and Chandra data. A possible pair of bipolar X-ray jets inside the remnant shell was reported earlier; caps or terminal X-ray hot spots of these jets have now been discovered outside the shell. These hot spots lie on the jet axis, which is oriented in position angle 66A degrees (measured from North through East). The proper motions of them are measured, and age is determined to be more than 160 years. The estimated physical parameters of the jets agree with the parameters of micro quasar jets. Three broad gaps with opening angles of 9A degrees have been revealed in the radio shell, as well as radio bulges with opening angles of 2A degrees-4A degrees displaying tube-like structures at the shell periphery. Signs of the motion of material along position angle 124.5A degrees have been found in the shell, suggesting the past activity of another pair of bipolar centrally symmetrical jets that were older than those first detected. These structural features provide direct evidence that the shell has been subject to multiple perforation by expanding fragments of matter from the supernova explosion, and by one or two pairs of bipolar jets with different orientations.

• 出版日期2014-1