5 papers
On the proper motion of AXP 1E2259+586
H. Ogelman, E. Tepedelenlioglu
1E2259+586 belongs to the group of anomalous X-ray pulsars (AXP) which are thought to be magnetars. Accurate measurements of the proper motion for these interesting objects have no…
The Chandra Observations of the Two Pulsars PSR 0628-28 and PSR 1813-36
Hakki Ogelman, Emre Tepedelenlioglu
PSR B0628-28 is an X-ray emitting radio pulsar which was observed with Advanced CCD Imaging Spectrometer (ACIS) on board Chandra on 2001 November 04 and on 2002 March 25 for 2000 s…
Post-Glitch RXTE-PCA Observations of the Vela Pulsar
M. Atakan Gurkan, Altan Baykal, M. Ali Alpar +2
We report the results of analysis of observations of the Vela Pulsar by PCA on RXTE. Our data consists of two parts. The first part contains observations at 1, 4, and 9 days after…
X-ray variability and 1mHz oscillations in TT ARI
A. Bayka, A. Esendemir, U. Kiziloglu +4
Using the archival ROSAT observation of TT Ari, X-ray energy spectra in different orbital phases and power spectra of the intensity time series are presented. Spectral fits show th…
A search for X-rays from five pulsars: PSR's 0740-28, 1737-30, 1822-09, 1915+13 and 1916+14
M. A. Alpar, O. H. Guseinov, U. Kiziloglu +1
We report observations of PSR's 0740-28, 1737-30, 1822-09, 1915+13 and 1916+14 with ROSAT. In the 0.1-2.1 keV range upper limits to luminosity are derived for power law and blackbo…