共 21 条
[21]
YAMAUCHI S, 1994, PUBL ASTRON SOC JPN, V46, pL109
DETECTION OF INVERSE-COMPTON X-RAYS FROM LOBES OF THE RADIO GALAXY FORNAX-A
被引：72
作者：
KANEDA, H
TASHIRO, M
IKEBE, Y
ISHISAKI, Y
KUBO, H
MAKISHIMA, K
OHASHI, T
SAITO, Y
TABARA, H
TAKAHASHI, T
机构：
[1] INST PHYS & CHEM RES,WAKO,SAITAMA 35101,JAPAN
[2] INST SPACE & ASTRONAUT SCI,SAGAMIHARA,KANAGAWA 229,JAPAN
[3] TOKYO METROPOLITAN UNIV,DEPT PHYS,HACHIOJI,TOKYO 19203,JAPAN
[4] UTSUNOMIYA UNIV,DEPT PHYS,UTSUNOMIYA,TOCHIGI 320,JAPAN
关键词：
MAGNETIC FIELDS;
RADIATION MECHANISMS;
NONTHERMAL;
RADIO CONTINUUM;
GALAXIES;
X-RAYS;
D O I：
10.1086/309742
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Extended X-ray emission was detected with ASCA from the synchrotron double lobes of the radio galaxy Fornax A. This is thought to be the same emission as was detected with ROSAT. The excess X-rays exhibit very hard spectra, described by a power law of energy index 1.2 +/- 0.5. Since this index is consistent with the synchrotron. radio index of 0.9 +/- 0.2, the X-rays are thought to arise when the radio-emitting relativistic electrons make inverse-Compton scattering off the cosmic microwave photons. Comparison of the X-ray and radio fluxes yields the lobe magnetic field intensity of 2-4 mu G. The relativistic electrons in the lobes are inferred to have an energy density close to that of the magnetic fields.
引用
收藏
页码：L13 / L16
页数：4
相关论文