Observational effects in supernova remnants associated with H II regions and dense gaseous clouds |
| |
Authors: | S O Tagieva |
| |
Institution: | (1) Institute of Physics, Academy of Sciences of Azerbaijan, pr. Dzhavida 33, Baku, 370143, Azerbaijan |
| |
Abstract: | The dependences of various parameters for S-and C-type supernova remnants (SNRs) on their diameters are investigated. Only SNRs with D≤40 pc that expand initially within H II regions and, subsequently, in dense media are considered. The expansion velocities and thermal electron densities of these SNRs were found to decrease with increasing diameter, on average, as D ?1 and D ?0.5, respectively. H II regions hamper the detection of SNRs; this effect is particularly pronounced in regions with 270°≤1≤300° and 330°≤1≤360°. The X-ray luminosities of SNRs born in dense media increase by an order of magnitude when their diameters reach ~30 pc. After the SNR diameters reach ~40 pc, their radio and X-ray luminosities decrease sharply. |
| |
Keywords: | supernovae and supernova remnants |
本文献已被 SpringerLink 等数据库收录! |
|