title   
  

On fallback disks and magnetars

Alpar, M. Ali and Ertan, Ünal and Erkut, M. Hakan and Ekşi, Kazım. Yavuz and Çalışkan, Şirin (2006) On fallback disks and magnetars. In: The 36th COSPAR Scientific Assembly- on Space Research, Beijing, China (Accepted/In Press)

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
262Kb

Abstract

The discovery of a disk around the anomalous X-ray pulsar 4U 0142+61, has rekindled the interest in fallback disks around magnetars. We briefly review the assumptions of fallback disk models and magnetar models. Earlier data in optical and near IR bands combined with new Spitzer data in the mid-IR range are compatible with a gas disk. Higher multipole fields with magnetar strengths together with a dipole field of 1012-1013 G on the neutron star surface are compatible with the presence of a disk around the neutron star. The possible presence and properties of a fallback disk after the supernova explosion is a likely initial condition to complement the initial rotation period and initial dipole field in determining the evolutionary paths and different types of isolated neutron stars.

Item Type:Papers in Conference Proceedings
Subjects:Q Science > QB Astronomy
ID Code:1214
Deposited By:M. Ali Alpar
Deposited On:19 Dec 2006 02:00
Last Modified:13 Apr 2009 14:00

Repository Staff Only: item control page