Ünal Ertan

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E-Mail
unalsabanciunivedu
Phone
(216) 483 9560
Personal Web
Title
Faculty Member
Jobs
Instructor
Education
1994 B.Sc. Physics, METU, Turkey 1997 M.Sc. Physics, METU, Turkey 1999-2000 Research fellow, The University of Leicester, UK 2002 Ph.d. Physics, METU, Turkey
Areas of Interest
High Energy Astrophysics: Neutron stars, accretion disks around neutron stars and black holes, emission mechanisms of broad-band radiation from neutron star magnetospheres and accretion disks.
Memberships
Turkish Astronomical Society
Publications
  • Article
    Benli, Onur and Ertan, Ünal (2016) "Long-term evolution of anomalous x-ray pulsars and soft gamma repeaters", Monthly Notices of the Royal Astronomical Society, Vol.457, No.4, 4114-4122 (SCI)
    Benli, Onur and Çalışkan, Şirin and Ertan, Ünal (2015) "Long-term evolution, x-ray outburst and optical/infrared emission of SGR 0501+4516", Monthly Notices of the Royal Astronomical Society, Vol.447, No.3, 2282-2286 (SCI)
    Ertan, Ünal and Çalışkan, Şirin and Benli, Onur and Alpar, M. Ali (2014) "Long-term evolution of dim isolated neutron stars", Monthly Notices of the Royal Astronomical Society, Vol.444, No.2, 1559-1565 (SCI)
    Kylafis, N. D. and Trümper, J. E. and Ertan, Ünal (2014) "Spectral formation in a radiative shock: application to anomalous X-ray pulsars and soft gamma-ray repeaters", Astronomy and Astrophysics, Vol.562 (SCI)
    Benli, Onur and Çalışkan, Şirin and Ertan, Ünal and Alpar, M. Ali and Trümper, J. E. and Kylafis, N. D. (2013) "X-ray enhancement and long-term evolution of swift J1822.3-1606", Astrophysical Journal, Vol.778, No.2 (SCI)
    Çalışkan, Şirin and Ertan, Ünal and Alpar, M. Ali and Trümper, J. E. and Kylafis, N. D. (2013) "On the evolution of the radio pulsar PSR J1734-3333", Monthly Notices of the Royal Astronomical Society, Vol.431, No.2, 1136-1142 (SCI)
    Trümper, J. E. and Dennerl, K. and Kylafis, N. D. and Ertan, Ünal and Zezas, A. (2013) "An accretion model for the anomalous x-ray pulsar 4U 0142+61", Astrophysical Journal, Vol.764, No.1, 49-58 (SCI)
    Çalışkan, Şirin and Ertan, Ünal (2012) "On the x-ray outbursts of transient anomalous x-ray pulsars and soft gamma-ray repeaters", Astrophysical Journal, Vol.758, No.2 (SCI)
    Feroci, Marco and Stella, L. and Van der Klis, M. and Courvoisier, T. J.-L. and Hernanz, M. and Hudec, R. and Santangelo, A. and Walton, D. and Zdziarski, A. and Barret, D. and Belloni, T. and Braga, J. and Brandt, S. and Budtz-Jrgensen, C. and Campana, S. and Den Herder, J.-W. and Huovelin, J. and Israel, G. L. and Pohl, M. and Ray, P. and Vacchi, A. and Zane, S. and Argan, A. and Attina, P. and Bertuccio, G. and Bozzo, E. and Campana, R. and Chakrabarty, D. and Costa, E. and De Rosa, A. and Del Monte, E. and Di Cosimo, S. and Donnarumma, I. and Evangelista, Y. and Haas, D. and Jonker, P. and Korpela, S. and Labanti, C. and Malcovati, P. and Mignani, R. and Muleri, F. and Rapisarda, M. and Rashevsky, A. and Rea, N. and Rubini, A. and Tenzer, C. and Wilson-Hodge, C. and Winter, B. and Wood, K. and Zampa, G. and Zampa, N. and Abramowicz, M. A. and Alpar, M. Ali and Altamirano, D. and Alvarez, J. M. and Amati, L. and Amoros, C. and Antonelli, L. A. and Artigue, R. and Azzarello, P. and Bachetti, M. and Baldazzi, G. and Barbera, M. and Barbieri, C. and Basa, S. and Baykal, A. and Belmont, R. and Boirin, L. and Bonvicini, V. and Burderi, L. and Bursa, M. and Cabanac, C. and Cackett, E. and Caliandro, G. A. and Casella, P. and Chaty, S. and Chenevez, J. and Coe, M. J. and Collura, A. and Corongiu, A. and Covino, S. and Cusumano, G. and D'Amico, F. and Dall'Osso, S. and De Martino, D. and De Paris, G. and Di Persio, G. and Di Salvo, T. and Done, C. and Dovciak, M. and Drago, A. and Ertan, Ünal and Fabiani, S. and Falanga, M. and Fender, R. and Ferrando, P. and Della Monica Ferreira, D. and Fraser, G. and Frontera, F. and Fuschino, F. and Galvez, J. L. and Gandhi, P. and Giommi, P. and Godet, O. and Göğüş, Ersin and Goldwurm, A. and Götz, D. and Grassi, M. and Guttridge, P. and Hakala, P. and Henri, G. and Hermsen, W. and Horak, J. and Hornstrup, A. and In 't Zand, J. J. M. and Isern, J. and Kalemci, Emrah and Kanbach, G. and Karas, V. and Kataria, D. and Kennedy, T. and Klochkov, D. and Kluzniak, W. and Kokkotas, K. and Kreykenbohm, I. and Krolik, J. and Kuiper, L. and Kuvvetli, I. and Kylafis, N. and Lattimer, J. M. and Lazzarotto, F. and Leahy, D. and Lebrun, F. and Lin, D. and Lund, N. and Maccarone, T. and Malzac, J. and Marisaldi, M. and Martindale, A. and Mastropietro, M. and McClintock, J. and McHardy, I. and Mendez, M. and Mereghetti, S. and Miller, M. C. and Mineo, T. and Morelli, E. and Morsink, S. and Motch, C. and Motta, S. and Munoz Darias, T. and Naletto, G. and Neustroev, V. and Nevalainen, J. and Olive, J. F. and Orio, M. and Orlandini, M. and Orleanski, P. and Ozel, F. and Pacciani, L. and Paltani, S. and Papadakis, I. and Papitto, A. and Patruno, A. and Pellizzoni, A. and Petracek, V. and Petri, J. and Petrucci, P. O. and Phlips, B. and Picolli, L. and Possenti, A. and Psaltis, D. and Rambaud, D. and Reig, P. and Remillard, R. and Rodriguez, J. and Romano, P. and Romanova, M. and Schanz, T. and Schmid, C. and Segreto, A. (2011) "The large observatory for x-ray timing (LOFT)", Experimental Astronomy (Sl), Vol.34, No.2, 415-444 (SCI)
    Alpar, M. Ali and Ertan, Ünal and Çalışkan, Şirin (2011) "SGR 0418+5729 - How does a young neutron star spin down to a 9 s period with a dipole field less than 10(13) G?", The Astrophysical Journal Letters, Vol.732, No.1, L4-L7 (SCI)
    Trümper, J. E. and Zezas, A. and Ertan, Ünal and Kylafis, N. D. (2010) "The energy spectrum of anomalous X-ray pulsars and soft gamma-ray repeaters", Astronomy and Astrophysics, Vol.518 (SCI)
    Ertan, Ünal and Ekşi, Kazım Yavuz and Erkut, Mehmet Hakan and Alpar, M. Ali (2009) "On the evolution of anomalous x-ray pulsars and soft gamma-ray repeaters with fall back disks", The Astrophysical Journal, Vol.702, No.2, 1309-1320 (SCI)
    Ertan, Ünal and Alpar, M. Ali and Erkut, Mehmet Hakan and Ekşi, K. Y. and Çalışkan, Ş. (2007) "Anomalous X-ray pulsars: persistent states with fallback disks", Astrophysics and Space Science, Vol.308, No.1-4, 73-77 (SCI)
    Ertan, Ünal and Erkut, Mehmet Hakan and Ekşi, Kazım Yavuz and Alpar, M. Ali (2007) "The anomalous X-ray pulsar 4U 0142+61: a neutron star with a gaseous fallback disk ", The Astrophysical Journal, Vol.657, No.1, 441-447 (SCI)
    Ertan, Ünal and Çalışkan, Şirin (2006) "Optical and infrared emission from the anomalous X-Ray pulsars and soft gamma-ray repeaters", The Astrophysical journal, Vol.649, No.2, L87-L90 (SCI)
    Ertan, Ünal and Göğüş, Ersin and Alpar, M. Ali (2006) "X-ray and infrared enhancement of anomalous x-ray pulsar 1E 2259+586", The Astrophysical journal, Vol.640, No.1, 435-440 (SCI)
    Ertan, Ünal and Cheng, K. S. (2004) "On the radio emission following the August 27 giant flare of SGR 1900+14", New astronomy, Vol.9, No.7, 503-507 (SCI)
    Ertan, Ünal and Cheng, K. S. (2004) "On the infrared, optical, and high-energy emission from the anomalous X-ray pulsar 4U 0142+61", The Astrophysical journal, Vol.605, No.2, 840-845 (SCI)
    Ertan, Ünal and Alpar, M. Ali (2003) "On the enhanced X-ray emission from SGR 1900+14 after the August 27 giant flare", Astrophysical Journal, Vol.593, No.2, L93-L96 (SCI)
    Ertan, Ünal and Alpar, M. Ali (2002) "On the outbursts of black hole soft x-ray transients", Astronomy and Astrophysics, Vol.393, No.1, 205-214 (SCI)
  • Book
    Astrophysics of neutron stars 2010: a conference in honor of M. Ali Alpar: Çeşme, İzmir, Turkey, 2-6 August 2010, Göğüş, Ersin and Belloni, Tomaso and Ertan, Ünal (eds.), Melville, New York: American Institute of Physics 2011
  • Papers in Conference Proceedings
    Ertan, Ünal and Çalışkan, Şirin and Alpar, M. Ali, "Genç nötron yıldızı sistemlerinin yayılma diskleriyle evrimi", Çalışkan, Şirin (ed.), XVIII. Ulusal Astronomi ve Uzay Bilimleri Kongresi, Malatya, Türkiye: İnönü Üniversitesi , November 2012
    Ertan, Ünal and Çalışkan, Şirin and Ekşi, Kazım Yavuz and Erkut, Mehmet Hakan and Alpar, M. Ali, "A natural limit on the observable periods of anomalous x-ray pulsars and soft gamma-ray repeaters", Göğüş, Ersin and Belloni, Tomaso and Ertan, Ünal (eds.), Astrophysics of Neutron Stars 2010: A Conference in Honor of M. Ali Alpar, Melville, New York: American Institute of Physics, October 2011, 160-165
    Posselt, B. and Schreyer, K. and Ertan, Ünal and Trippe, S. and Menten, K. and Klein, B., "Millimeter interferometer observations of the magnetar 4U 0142+61", Göğüş, Ersin and Belloni, Tomaso and Ertan, Ünal (eds.), Astrophysics of Neutron Stars 2010: A Conference in Honor of M. Ali Alpar, Melville, New York: Amercan Institute of Physics , October 2011, 152-155
    Çalışkan, Şirin and Ertan, Ünal, "X-ray outbursts of AXPs and SGRs", Göğüş, Ersin and Belloni, Tomaso and Ertan, Ünal (eds.), Astrophysics of Neutron Stars 2010: A Conference in Honor of M. Ali Alpar, Melville, New York: Amercan Institute of Physics, October 2010, 199-200
    Ertan, Ünal and Alpar, M. Ali, "On the enhanced X-ray emission from SGR 1900+14 after the August 27th giant flare", Van den Heuvel, E. P. J. and Wijers, R. A. M. J. and In 't Zand, J. J. M. (eds.), 2nd BeppoSAX Conference on Restless High-Engery Universe, Amsterdam, Netherlands: Elsevier, June 2004, 530-535