GINGA observation of the X-ray pulsar 1E 2259+586 in the supernova remnant G109.1-1.0
著者
和文:
Koyama, K.,
Nagase, F.,
Ogawara, Y.,
Shinoda, K.,
河合 誠之,
Jones, M. H.,
Williams, O. R.,
Watson, M. G.,
Makishima, K.,
Ohashi, T..
英文:
Koyama, K.,
Nagase, F.,
Ogawara, Y.,
Shinoda, K.,
Kawai, N.,
Jones, M. H.,
Williams, O. R.,
Watson, M. G.,
Makishima, K.,
Ohashi, T..
言語
English
掲載誌/書名
和文:
英文:
Publications of the Astronomical Society of Japan
巻, 号, ページ
Vol. 41
pp. 461-471
出版年月
1989年
出版者
和文:
英文:
会議名称
和文:
英文:
開催地
和文:
英文:
アブストラクト
The X-ray pulsar 1E 2259+586 in the supernova remnant G109.1-1.0 was observed with the Ginga satellite from June 21 to 23, 1987. The heliocentric pulse period is found to be 6.978759 + or - 0.000002 s, confirming a secular spin down rate of 6.2 x 10 to the -13th s/s. The pulsation was observed to have asymmetric double peaks in the energy range from 1 keV to 10 keV. The upper limit on the projected semimajor axis is 0.08 1t-s (3sigma) throughout the period range searched. The constraint on the binary system is discussed in the light of this new upper limit. The energy spectrum of 1E 2259+586 does not show a single power law spectrum but exhibits a complex structure which mimics an emission line at 7.2 keV. An attempt to ascribe the structure to a cyclotron line feature is presented. This interpretation implies a weak magnetic field of 5 x 10 to the 11th G at the neutron star surface of 1E 2259+586.
各種検索
サポート
ヘルプ