| タイトル | Suzaku View of the Neutron Star in the Dipping Source 4U 1822-37 |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150011658 |
| 著者（英） | Sakurai, Soki; Sasano, Makoto; Enoto, Teruaki; Makishima, Kazuo; Zhang, Zhongli |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2013-11-19 |
| 言語 | eng |
| 内容記述 | The dipping X-ray source 4U 182237 was observed by Suzaku on 2006 Octrober 20 for a net exposure of 37 ks. The source was detected with the XIS at a 1-10 keV flux of 5.5 10(exp 10) erg per square centimeter per second, and with the HXD (HXD-PIN) at a 10-50 keV flux of 8.9 10(exp 10) erg per square centimeter per second. With HXD-PIN, the pulsation was detected at a barycentric period of 0.592437 seconds, and its change rate was reconfirmed as 2.43 10(exp 12) seconds per second. The 1-50 keV spectra of 4U 1822-37 were found to be very similar to those of Her X- 1 in the slopes, cutoff and iron lines. Three iron lines (Fe Kalpha, Fe XXV, and Fe XXVI) were detected, on top of a 1-50 keV continuum that is described by an NPEX model plus a soft blackbody. In addition, a cyclotron resonance scattering feature was detected significantly ( greater than 99% confidence), at an energy of 33+/-2 keV with a depth of 0.4(sup +0.6)/(sub 0.3). Therefore, the neutron star in this source is concluded to have a strong magnetic field of 2.8 10(exp 12) G. Further assuming that the source has a relatively high intrinsic luminosity of several times 10(exp 37) erg per second, its spectral and timing properties are consistently explained. |
| NASA分類 | Astronomy; Astrophysics |
| レポートNO | GSFC-E-DAA-TN23912 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
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