Near-infrared, optical, and X-ray observations of the anomalous X-ray pulsar 4U 0142 + 61

Mikio Morii, Nobuyuki Kawai, Jun Kataoka, Yoichi Yatsu, Naoto Kobayashi, Hiroshi Terada

Research output: Contribution to journalArticle

12 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1177-1180
Number of pages4
JournalAdvances in Space Research
Volume35
Issue number6
DOIs
Publication statusPublished - 2005
Externally publishedYes

Fingerprint

pulsars
near infrared
Infrared radiation
X rays
magnetars
dip
Magnetosphere
x rays
broadband
Synchrotrons
Telescopes
magnetosphere
X Ray Timing Explorer
magnetospheres
constrictions
synchrotrons
coverings
telescopes
Pulsars

Keywords

  • Anomalous X-ray pulsar
  • Magnetar
  • Neutron star

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Near-infrared, optical, and X-ray observations of the anomalous X-ray pulsar 4U 0142 + 61. / Morii, Mikio; Kawai, Nobuyuki; Kataoka, Jun; Yatsu, Yoichi; Kobayashi, Naoto; Terada, Hiroshi.

In: Advances in Space Research, Vol. 35, No. 6, 2005, p. 1177-1180.

Research output: Contribution to journalArticle

Morii, Mikio ; Kawai, Nobuyuki ; Kataoka, Jun ; Yatsu, Yoichi ; Kobayashi, Naoto ; Terada, Hiroshi. / Near-infrared, optical, and X-ray observations of the anomalous X-ray pulsar 4U 0142 + 61. In: Advances in Space Research. 2005 ; Vol. 35, No. 6. pp. 1177-1180.
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AU - Yatsu, Yoichi

AU - Kobayashi, Naoto

AU - Terada, Hiroshi

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AB - 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.

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