76 citations · 727 across the 30 of their papers we have counts for
8 papers · 1 filter
On the X-Ray Light Curve, Pulsed-Radio Emission, and Spin Frequency Evolution of the Transient Anomalous X-Ray Pulsar Xte J1810--197 During its X-Ray Outburst
U. Ertan, M. H. Erkut
We show that: (i) the long-term X-ray outburst light curve of the transient AXP XTE J1810-197 can be accounted for by a fallback disk that is evolving towards quiescence through a…
Anomalous X-ray pulsars: Persistent States with Fallback Disks
Unal Ertan, M. Ali Alpar, M. Hakan Erkut +2
The anomalous X-ray pulsar 4U 0142+61 was recently detected in the mid infrared bands with the SPITZER Observatory (Wang, Chakrabarty & Kaplan 2006). This observation is the first…
Optical and Infrared Emission from the AXPs and SGRs
Unal Ertan, Sirin Caliskan
We show that the irradiated accretion disk model can account for all the optical and infrared observations of the anomalous X-ray pulsars in the persistent state. Model fits do not…
The Anomalous X-Ray Pulsar 4U 0142+61: A Neutron Star with a Gaseous Fallback Disk
U. Ertan, M. H. Erkut, K. Y. Eksi +1
The recent detection of the anomalous X-ray pulsar (AXP) 4U 0142+61 in the mid-infrared with the {\it Spitzer} observatory by Z.Wang and coworkers constitutes the first instance of…
X-Ray and Infrared Enhancement of Anomalous X-ray Pulsar 1E 2259+58
U. Ertan, E. Gogus, M. A. Alpar
The long term (~1.5 years) X-ray enhancement and the accompanying infrared enhancement light curves of the anomalous X-ray pulsar 1E 2259+58 following the major bursting epoch can…
On the Infrared, Optical and High Energy Emission from the Anomalous X-Ray Pulsar 4U 0142+615
U. Ertan, K. S. Cheng
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 m…