Near-infrared,optical, and X-ray observations of the anomalous X-ray pulsar 4U 0142 + 61 |
| |
| Institution: | 1. MAXI Group, ISS Science Project Office, Tsukuba Space Center, Japan Aerospace Exploration Agency, Sengen 2-1-1, Tsukuba-shi, Ibaraki-ken 305-8505, Japan;2. Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8551, Japan;3. Institute of Astronomy, University of Tokyo, Osawa 2-21-1, Mitaka-shi, Tokyo 181-0015, Japan;4. Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place Hilo, HI 96720, USA;1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS-70, Cambridge, MA 02138, USA;2. Jansky Fellow, National Radio Astronomy Observatory, and Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS-70, Cambridge, MA 02138, USA |
| |
| Abstract: | We present results from the simultaneous observations of an anomalous X-ray pulsar (AXP) 4U 0142 + 61 on Sep. 2003. We used RXTE, Subaru, and UH88 telescopes to cover X-ray, near-infrared (NIR) (JHK′), and optical (BVRI) bands, respectively. We obtained a simultaneous broadband spectrum for the first time among AXPs. We found NIR excess in the spectrum, which may be another component different from the optical one. We also found a R band dip. We discuss the broadband spectrum covering the optical and X-ray bands in the framework of a self absorbed synchrotron emission from the magnetosphere of magnetar. We also discuss about the R band dip feature, which could put a restriction on the emission models of magnetars. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
