E.Nihal Ercan

E.Nihal Ercan
Bogazici University · Department of Physics

PhD UCL-MSSL 1983
Galactic and Extra Galatic X-ray Astronomy, Astrophysics, Dark Matter, Galaxy Clusters, Space Weather

About

189
Publications
16,376
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336
Citations
Citations since 2016
82 Research Items
194 Citations
2016201720182019202020212022010203040
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Introduction
X-ray observations of galactic bulge sources,globular cluster X-ray Sources ,, X-ray bursters , Low mass X-ray binaries,. X-ray and Optical observations of clusters of galaxies,. galaxy evolution. Extragalactic astronomy in X-rays,optical ; supernova remnants,search for SNR candidates in nearby galaxies in Optical and X-Rays, chemical enrichment of galaxy clusters ,cool and non-cool core galaxy clusters observations in X-rays and optical.Dark matter ,dark energ in X-rays ,Mega Maser Galaxies
Additional affiliations
June 1989 - September 1992
Science and Technology Facilities Council
Position
  • Visiting Researcher
June 1985 - September 1985
University of Bonn
Position
  • Visiting Researcher
June 1984 - September 1988
Mullard Space Science Lab. University College London
Position
  • Researcher
Education
October 1979 - June 1983
University College London,Mullard Space Sicence Laboratory
Field of study
  • X-ray astronomy
September 1976 - June 1978
Bogazici University
Field of study
  • Physics, Quantum Field Theory
October 1972 - June 1976
Istanbul University, Bsc
Field of study
  • physics+ mathematics (double major)

Publications

Publications (189)
Preprint
We report the results of our investigation on the possible existence of supernova remnants (SNRs) in the nearby galaxy, NGC 1569, using the CCD imaging and spectroscopic observations from the RTT150 telescope of TUG-TUBITAK in Antalya, Turkey for two different observing periods. Using [S\,{\sc ii}]/H$\alpha$ $\geq$ 0.4 standard criteria, the identi...
Article
Full-text available
Context. The study of the brightest cluster galaxy (BCG) coronae embedded in noncool core (NCC) galaxy clusters is crucial to understand the BCG's role on galaxy cluster evolution as well as the activation of the self regulated cooling and heating mechanism in the central regions of galaxy clusters. Aims. We aim to explore the X-ray properties of...
Article
Full-text available
A sample of 30 H 2 O extra-galactic maser galaxies with their published HCN(J=1−0) and HCO+(J=1−0) observations has been compiled to investigate the dense gas correlation with H 2 O maser emission. Our sample number exceeds the size of the previous HCN samples studied so far by a factor of three, and it is the first study on the possible relation w...
Article
Full-text available
The results of an optical search for supernova remnants (SNRs) in the nearby irregular galaxy NGC 2366 are presented. We took interference filter images and collected spectral data in three epochs with the f/7.7 1.5 m Russian Turk-ish Telescope (RTT150) at TÜBİTAK National Observatory (TUG) located in Antalya, Turkey. The continuum-subtracted Hα an...
Article
Full-text available
Galaxy clusters are the largest virialized objects in the universe. Their merger dynamics and their interactions with the cosmic filaments that connect them are important for our understanding of the formation of large-scale structure. In addition, cosmic filaments are thought to possess the missing baryons in the universe. Studying the interaction...
Chapter
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Pluto
Article
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ALL ABOUT ENE
Article
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all about ENE
Chapter
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İmtiyaz Sahibi / Publisher • Yaşar Hız Genel Yayın Yönetmeni / Editor in Chief • Eda Altunel Kapak & İç Tasarım / Cover & Interior Design • Gece Kitaplığı Editör / Edıtor • Prof. Dr. Hasan AKGÜL Birinci Basım / First Edition • © Haziran 2022
Chapter
Full-text available
X-ışınları Astronomisi alanında uzun sayılacak bir süredir ülkemizde son derece önemli çalışmalar yapılmaktadır. Bu çok farklı gerek galaksimiz Samanyolu içindeki gerekse galaksimiz dışındaki çok uzak bölgelerden gelen X-ışınlarının çalışılması artık tüm dünyada olduğu gibi ülkemizde de önemini her geçen gün arttırmaktadır. Bu kısa çalışmada sadece...
Chapter
Full-text available
Bilim insanları Dünya’nın ötesinde yaşamın ipuçlarını aramaya devam ederken, evrenimizde canlı organizmaları tanımlayabildiğimiz, yaşamı destekleyen tek gezegen olmaya devam ediyor. Dünya, on binlerce yıldır insanlara ve daha birçok canlı türüne ev sahipliği yapmaktadır. Tarih boyunca birçok gezegen ve güneş sistemi keşfedildi fakat hiçbiri üzerind...
Preprint
Full-text available
Extragalactic water megamaser emissions at 22 GHz have been playing vital roles in astrophysics. The limited detection rate of these masers has been motivating researchers to find clues that can help characterize them. The physical environments masers formed in is still ambiguous, accordingly, statistical studies have been thoroughly used to resolv...
Article
Full-text available
My publication list + CV
Article
My recent publication list
Preprint
Full-text available
Clusters of galaxies are the largest virialized objects in the Universe. Because mergers of these objects are the most energetic events in the Universe--driving shocks and turbulence that heat the gas and accelerate non-thermal phenomena in ways that are yet to be understood--they are inherently interesting. The galaxy cluster Abell 3395 is at an e...
Book
Full-text available
X-ışınları ve Evren Cilt 1 adlı yeni kitabım çok yakında çıkıyor
Book
Full-text available
Brown Dwarfs Review article
Article
Full-text available
Most celestial bodies emit their energy in the 0.5-5 keV range, thus the universe is very bright in X-rays. The Earth's atmosphere protects life on earth from being burned out by the high energy UV and X-ray, while blocking the precious information from the universe. Therefore, the X-ray satellites should be placed either at high altitudes in order...
Research
2021 RECENT CV
Poster
Full-text available
According to large scale structure (LSS) formation scenarios, Galaxy Clusters (GCs) are thought to have formed hierarchically via mergers of smaller scale structures. Thermodynamical properties of the X-ray emitting intracluster medium are sensitive probes of these dynamical activities. In this talk, I will present the joint NuSTAR and XMM-Newton a...
Research
CV_ENERCAN
Article
Full-text available
E.Nihal Ercan CV_2021
Conference Paper
https://1drv.ms/v/s!Asys-5Z8R-f9guNQdgeoDGsxpnd4xQ?e=67Sk3Y the webinar recorded talk of Jocelyn Bell Burnell
Presentation
Full-text available
Talk given at Boğaziçi University Physics Dept. via zoom
Conference Paper
NGC 6946 is a nearby and nearly face-on intermediate spiral galaxy. NGC 6946's first optical search for SNRs was made by Matonick & Fesen (1997). Long et al. (2019) studied optical search using narrowband Images obtained with the WIYN telescope. They determined 89 SNRs using Hα ratios greater than 0.4 criteria [S II]. We are going to search for the...
Book
A new book is on the way!
Article
Full-text available
X-ray astronomy, its past & future
Book
Full-text available
editörlerden biri olarak hazırlandı Birinci Basım / First Edition • © Eylül 2020 ISBN • 978-625-7243-55-1
Book
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a ray astronomy ,missions and their results starting from rockets endin with the future missions to be launched.
Book
Full-text available
Article
Full-text available
A sample of 30 H2O extra-galactic maser galaxies with their published HCN(J=1-0) and HCO+(J=1-0) observations has been compiled to investigate the dense gas correlation with H2O maser emission. Our sample number exceeds the size of the previous HCN samples studied so far by a factor of three, and it is the first study on the possible relation with...
Preprint
A sample of 30 H2O extra-galactic maser galaxies with their published HCN(J=1-0) and HCO+(J=1-0) observations has been compiled to investigate the dense gas correlation with H2O maser emission. Our sample number exceeds the size of the previous HCN samples studied so far by a factor of three, and it is the first study on the possible relation with...
Chapter
Full-text available
Bölüm 1; Galaksi Kümeleri-E.Nihal Ercan
Data
Personal CV (most recent)
Article
Full-text available
most recent CV
Preprint
Full-text available
The results of an optical search for supernova remnants (SNRs) in the nearby irregular galaxy NGC 2366 are presented. We took interference filter images and collected spectral data in three epochs with the f/7.7 1.5 m Russian Turkish Telescope (RTT150) at T\"{U}B\.{I}TAK National Observatory (TUG) located in Antalya, Turkey. The continuum-subtracte...
Conference Paper
Full-text available
We present the results of Suzaku observation of the southern of the galactic supernova remnant G296.10.5 which is bright and located in Carina arm. We applied an absorbed Vpshock and powerlaw models which means that the Xray emission consists of a thermal emission from the blast wave interacting with interstellar medium and a nonthermal sychrotron...
Research
Full-text available
CV updated by 24.06.2020
Article
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CV by June 2020
Conference Paper
Full-text available
ZET Projemiz kapsaminda 10 Abell galaksi kümesini inceledik. Kümelerin X-ışın verilerini XMM-Newton ve Chandra uydularından aldık. Küme içi gazın (ICM) X-ışınım profilleri çıkarıldı. Plazmanın sıcaklık ve metal haritaları oluşturuldu. Herbir kümenin X-ışın nokta kaynakları tespit edildi. Optik veriler 5 farklı gözlem projesiyle RTT150 teleskopuyla...
Book
Full-text available
Book
Full-text available
Geniş bir kitleye hitap etmek üzere kaleme aldığım bu kitabım, yıllardır Boğaziçi Üniversitesi Fizik Bölümünde verdiğim lisans seviyesindeki Astronomi ve Astrofizik derslerimi alan öğrencilerim başta olmak üzere, ilerleyen bölümlerde görüleceği gibi daha üst sınıflardaki öğrencilere ve özellikle gözlemsel astrofizik alanında araştırma yapmak isteye...
Article
My most recent CVin English
Article
My recent CVwith additional publications
Preprint
Full-text available
The study of the brightest cluster galaxy (BCG) coronae embedded in noncool core (NCC) galaxy clusters is crucial to understand the BCG's role in galaxy cluster evolution as well as the activation of the self-regulated cooling and heating mechanism in the central regions of galaxy clusters. We explore the X-ray properties of the intracluster medium...
Article
Full-text available
Context. The study of the brightest cluster galaxy (BCG) coronae embedded in noncool core (NCC) galaxy clusters is crucial to understand the BCG's role on galaxy cluster evolution as well as the activation of the self regulated cooling and heating mechanism in the central regions of galaxy clusters. Aims. We aimed to explore the X-ray properties o...
Article
Full-text available
We present XMM-Newton/EPIC observations of six merging galaxy clusters and study the distributions of their temperature, iron (Fe) abundance and pseudo-entropy along the merging axis. For the first time, we focus simultaneously, and in a comprehensive way, on the chemical and thermodynamic properties of the freshly collided intracluster medium (ICM...
Preprint
Full-text available
We present XMM-Newton/EPIC observations of six well known merging galaxy clusters and study the distributions of their temperature, iron (Fe) abundance and pseudo-entropy profiles. For the first time, we focus simultaneously, and in a comprehensive way, on the chemical and thermodynamic properties of the freshly collided intracluster medium (ICM)....
Poster
In this work, we report the results of our study of the nearby (z=0.0539) galaxy cluster Abell 780 (Hydra A) by using ~123 ks XMM-Newton archival observation enclosing a circular region with 800 kpc radius (~R500). Abell 780 is a cool core cluster (cooling time; tcool <1.0 (h71)-1/2 Gyr) whose central regions are disturbed by the cooling flows from...
Poster
Full-text available
In this work, we report the results of our study of the nearby (z=0.0539) galaxy cluster Abell 780 (Hydra A) by using ~123 ks XMM-Newton archival observation enclosing a circular region with 800 kpc radius (~R 500). Abell 780 is a cool core cluster (cooling time; t cool <1.0 (h 71)-1/2 Gyr) whose central regions are disturbed by the cooling flows f...
Poster
Full-text available
In this work, we report the results of our study of the nearby (z=0.0539) galaxy cluster Abell 780 (Hydra A) by using ~123 ks XMM-Newton archival observation enclosing a circular region with 800 kpc radius (~R500). Abell 780 is a cool core cluster (cooling time; tcool <1.0 (h71)-1/2 Gyr) whose central regions are disturbed by the cooling flows from...
Article
Full-text available
There are two different theoretical scenarios in the literature on chemical enrichment and metal synthesis of the Universe: (i) early-time and (ii) late-time. The first scenario suggests that elements are produced before the galaxies gravitationally cluster. The second enrichment mechanism claims that dynamical turbulences of galaxy merger trigger...
Cover Page
Optical and X-ray observational search for the possible supernova remnant candidates in the nearby galaxy NGC 1569 E N Ercan E Aktekin N Cesur A Tümer Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 2, 1 December 2018, Pages 2804–2812, https://doi.org/10.1093/mnras/sty2456
Article
Full-text available
We report the results of our investigation on the possible existence of supernova remnants (SNRs) in the nearby galaxy, NGC 1569, using the CCD imaging and spectroscopic observations from the RTT150 telescope of TUG-TUBITAK in Antalya, Turkey for two different observing periods. Using [S ]/Hα ≥ 0.4 standard criteria, the identification of 13 new SN...
Cover Page
my recent cv
Presentation
Full-text available
Mayıs HAziran 2018 Boğaziçi Üniversitesi Mezunlar Dergisi
Cover Page
my recent cv in English
Research
non cool core galaxy clusters require special treatment unlike cool core galaxy clusters,new methods have to be developed.
Conference Paper
Full-text available
CCD6 on MOS1 was affected by a meteorite stike and CCD#3 was working in anomalous state, therefore they were excluded for the rest of the analysis. Using the tasks mos-filter and pn-filter we subtracted soft proton (SP) flaring from the data. We Analysis We use XMM-Newton ESAS in order to clean raw data, to create cheese masks and images for EPIC c...
Poster
Full-text available
XMM Newton observations of Toothbrush & Sausage Clusters
Poster
Full-text available
The investigation of Entropy and pressure in the cool core cluster PKS 0745-191 with 2014 archival data by XMM-Newton
Poster
Full-text available
The abundance and temperature profile of the Toothbrush and Sausage clusters of galaxies which have a large radio relic associated with a merger shock north of their core.
Data
The spatial distribution of the metals residing in the intra-cluster medium (ICM) of galaxy clusters records all the information on a cluster's nucleosynthesis and chemical enrichment history. We present measurements from a total of 1.2 Ms Suzaku XIS and 72 ks Chandra observations of the cool-core galaxy cluster Abell 3112 out its virial radius (~...
Article
Full-text available
The spatial distribution of the metals residing in the intra-cluster medium (ICM) of galaxy clusters records all the information on a cluster's nucleosynthesis and chemical enrichment history. We present measurements from deep Suzaku and Chandra observations of the cool-core galaxy cluster Abell 3112 out its virial radius (~1470 kpc). We find that...
Article
Full-text available
We present the detection of 16 optical supernova remnant (SNR) candidates in the nearby spiral galaxy IC342. The candidates were detected by applying the [SII]/Hα ratio criterion on observations made with the 2 m RCC telescope at Rozhen National Astronomical Observatory in Bulgaria. In this paper, we report the coordinates, diameters, Hα and [SII]...