title   
  

On the infrared, optical, and high-energy emission from the anomalous X-ray pulsar 4U 0142+61

Ertan, Ünal and Cheng, K. S. (2004) On the infrared, optical, and high-energy emission from the anomalous X-ray pulsar 4U 0142+61. The Astrophysical journal, 605 (2). pp. 840-845. ISSN 0004-637X

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Official URL: http://dx.doi.org/10.1086/382502

Abstract

We show that the observed pulsed optical emission of the anomalous X-ray pulsar 4U 0142+61 can be accounted for by both the magnetar outer gap models and the disk-star dynamo gap models; therefore, there is no evidence favoring only one of these models as its responsible mechanism. Nevertheless, the estimated high-energy gamma-ray spectra from these models have different power-law indices and can be tested by future observations with the Gamma-Ray Large Area Space Telescope (GLAST). Furthermore, we show by analytical estimations that the expectations of a standard disk model are in agreement with the observed unpulsed optical and infrared luminosities of the AXP 4U 0142+61.

Item Type:Article
Uncontrolled Keywords:accretion, accretion disks; pulsars : individual (4U 0142+61); stars : neutron; X-rays : bursts
Subjects:Q Science > QC Physics
ID Code:512
Deposited By:Ünal Ertan
Deposited On:16 Feb 2007 02:00
Last Modified:25 May 2011 14:02

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