Cemile Ezer
A5060161535- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Particle Detector Development and Performance
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Scientific Research and Discoveries
- Galaxies: Formation, Evolution, Phenomena
- Geophysics and Gravity Measurements
- Multidisciplinary Science and Engineering Research
- Nonlinear Optical Materials Research
- Families in Therapy and Culture
- Geological Studies and Exploration
- Relativity and Gravitational Theory
- History and Developments in Astronomy
- Optical properties and cooling technologies in crystalline materials
- Experimental and Theoretical Physics Studies
- Chalcogenide Semiconductor Thin Films
- Geochemistry and Geologic Mapping
- History and advancements in chemistry
- Islamic Thought and Society Studies
- Geology and Paleoclimatology Research
Yıldız Technical University
2021
Boğaziçi University
2016-2017
Center for Astrophysics Harvard & Smithsonian
2017
Doğuş University
2010-2012
The CERN Axion Solar Telescope (CAST) has extended its search for solar axions by using 3He as a buffer gas. At T=1.8 K this allows larger pressure settings and hence sensitivity to higher axion masses than our previous measurements with 4He. With about 1 h of data taking at each 252 different we have scanned the mass range 0.39 eV < m_a 0.64 eV. From absence excess X-rays when magnet was pointing Sun set typical upper limit on axion-photon coupling g_ag 2.3 x 10^{-10} GeV^{-1} 95% CL, exact...
ABSTRACT We present results from recent Suzaku and Chandra X-ray Multiple Mirrior Telescope optical observations of the strongly merging “double cluster” A1750 out to its virial radius, both along perpendicular a putative large-scale structure filament. Some previous studies individual clusters have found evidence for ICM entropy profiles that flatten at large cluster radii, as compared with self-similar prediction based on purely gravitational models hierarchical formation, gas fractions...
The spatial distribution of the metals residing in intra-cluster medium (ICM) galaxy clusters records all information on a cluster's nucleosynthesis and chemical enrichment history. We present measurements from total 1.2 Ms Suzaku XIS 72 ks Chandra observations cool-core cluster Abell 3112 out its virial radius (~ 1470 kpc). find that ratio observed supernova type Ia explosions to has uniform at level 12-16% radius. fraction is agreement with corresponding found our Galaxy Galaxy....
ABSTRACT In this paper, we report the relative supernovae (SNe) contribution to metal budget of intracluster medium (ICM) Abell 1837 galaxy cluster at redshift z = 0.069. For purpose, analysed hot ICM and obtained radial distributions using XMM–Newton archival data with a total exposure ∼100 ks. These measurements consist Mg, Si, S, Fe Ni within radius 0.7 R500, which is divided into three concentric annuli. order explain observed abundance pattern in terms supernova contributions, used our...
The status of the solar axion search with CERN Axion Solar Telescope (CAST) will be presented. Recent results obtained by use $^3$He as a buffer gas has allowed us to extend our sensitivity higher masses than previous measurements $^4$He. With about 1 h data taking at each 252 different pressure settings we have scanned mass range 0.39 eV$ \le m_{a} $ 0.64 eV. From absence an excess x rays when magnet was pointing Sun set typical upper limit on axion-photon coupling g$_{aγ} 2.3\times...
The CERN Axion Solar Telescope (CAST) is currently the most sensitive axion helioscope designed to search for axions produced by Primakoff process in solar core. CAST using a Large Hadron Collider (LHC) test magnet where could be converted into X-rays with energies up 10 keV. During phase I, experiment operated vacuum inside bores and covered masses 0.02 eV. In II, were filled buffer gas (first 4He later 3He) at various densities order extend sensitivity higher (up f .18 eV). II data taking...
The CERN Axion Solar Telescope (CAST) experiment searches for axions from the Sun converted into few keV photons via inverse Primakoff effect in high magnetic field of a superconducting Large Hadron Collider (LHC) decommissioned test magnet.After results obtained with vacuum magnet pipes (phase I experiment) as well 4 He collaboration is now immersed data taking 3 He, to be finished 2011.The status will presented, including preliminary exclusion plot first data.CAST currently sensitive...
Cetin, Serkant Ali (Dogus Author) -- Ezer, Cemile Yildiz, Suleyman Cenk Conference full title: 6th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2010; Zurich; Switzerland; 5 July 2010 through 9 2010.
The CERN Axion Solar Telescope (CAST) is searching for solar axions which could be produced in the core of Sun via so-called Primakoff effect. Not only would these hypothetical particles solve strong CP problem, but they are also one favored candidates dark matter. In order to look originating from Sun, CAST uses a decommissioned LHC prototype magnet. its 10 m long magnetic field region 9 Tesla, reconverted into X-ray photons. Different detectors installed on both ends magnet, mounted...