258 citations
- Z. Eker2 profiles19 · h 18
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5 papers · 1 filter
Accretion on Reissner-Nordstrom-(anti)-de Sitter Black Hole with Global Monopole
Ayyesha K. Ahmed, Ugur Camci, Mubasher Jamil
In this paper, we investigate the accretion on the Reissner-Nordström anti-de-Sitter black hole with global monopole charge. We discuss the general solutions of accretion using the…
Scalar-Tensor Teleparallel Wormholes by Noether Symmetries
Sebastian Bahamonde, Ugur Camci, Salvatore Capozziello +1
A gravitational theory of a scalar field non-minimally coupled with torsion and boundary term is considered with the aim to construct Lorentzian wormholes. Geometrical parameters i…
Study of Eclipsing Binary and Multiple Systems in OB Associations IV: Cas OB6 Member DN Cas
V. Bakis, H. Bakis, S. Bilir +1
An early-type, massive, short-period () eclipsing spectroscopic binary DN Cas has been re-visited with new spectral and photometric data. The masses a…
HD 179821 (V1427 Aql, IRAS 19114+0002) -- A Massive Post-Red Supergiant Star?
Timur Sahin, David L. Lambert, Valentina G. Klochkova +1
We have derived elemental abundances of a remarkable star, HD 179821, with unusual composition (e.g. [Na/Fe]=1.00.2 dex) and extra-ordinary spectral characteristics. Its metal…
CCD UBV Photometry and Kinematics of the Open Cluster NGC 225
S. Bilir, Z. F. Bostanci, T. Yontan +6
We present the results of CCD photometric and spectroscopic observations of the open cluster NGC 225. In order to determine the structural parameters of NGC 225, we calculate…