期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
卷 68, 期 -, 页码 -出版社
OXFORD UNIV PRESS
DOI: 10.1093/pasj/psv096
关键词
gamma-rays: ISM; ISM: individual (G298.6-0.0, 3FGL J1214.0-6236); ISM: supernova remnants; X-rays: ISM
资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [22684012, 15K05107, 15K17657]
- Grants-in-Aid for Scientific Research [15K17657, 15K05107, 22684012, 15H00773, 23340055] Funding Source: KAKEN
We present an X-ray analysis on the Galactic supernova remnant (SNR) G298.6-0.0 observed with Suzaku. The X-ray image shows a center-filled structure inside a radio shell, implying that this SNR can be categorized as a mixed-morphology (MM) SNR. The spectrum is well reproduced by a single-temperature plasma model in ionization equilibrium, with a temperature of 0.78 (0.70-0.87) keV. The total plasma mass of 30 M-circle dot indicates that the plasma has an interstellar medium origin. The association with a GeV gamma-ray source, 3FGL J1214.0-6236, on the shell of the SNR is discussed, in comparison with other MM SNRs with GeV gamma-ray associations. It is found that the flux ratio between absorption-corrected thermal X-rays and GeV gamma-rays decreases as the physical size of MM SNRs becomes larger. The absorption-corrected thermal X-ray flux of G298.6-0.0 and the GeV gamma-ray flux of 3FGL J1214.0-6236 closely follow this trend, implying that 3FGL J1214.0-6236 is likely to be a GeV counterpart of G298.6-0.0.
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