11 citations · 24 across the 4 of their papers we have counts for
4 papers
Optical Counterparts of Two Candidate Ultraluminous X-ray Sources in NGC 4536
H. Avdan, E. Sonbas, K. S. Dhuga +7
Archival {\it XMM-Newton}, {\it Chandra} and {\it Hubble Space Telescope (HST)} data have been used to study the X-ray and optical properties of two candidate ultraluminous X-ray s…
Investigation of the Connection Between X-ray Binaries and Compact Star Clusters in NGC 628
Senay Avdan, Aysun Akyuz, Seda Acar +3
We investigated for a possible connection between the types of X-ray binaries (XRBs) and the properties of compact star clusters in the nearby galaxy NGC 628. Using {\it Chandra} a…
X-ray spectral and optical properties of a ULX in NGC 4258 (M106)
Hasan Avdan, Senay Avdan, Aysun Akyuz +3
We study the X-ray and optical properties of the ultraluminous X-ray source (ULX) X-6 in the nearby galaxy NGC 4258 (M106) based on the archival {\it XMM-Newton}, {\it Chandra}, {\…
A search for periodicities from a ULX in the LINER galaxy NGC 4736
H. Avdan, S. Kayaci Avdan, A. Akyuz +1
We report our findings on a new quasi-periodic oscillation (QPO) and a long period from the ultraluminous X-ray source (ULX) X-2 in nearby galaxy NGC 4736 based on the Chandra and…