Mehmet Ali Alpar
  • FENS
  • Mehmet Ali Alpar

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E-Mail
alparsabanciunivedu
Phone
(216) 483 9510
Personal Web
Title
Faculty Member
Education
B.Sc. in Physics, Middle East Technical University (METU), 1972;
Ph.D. in Physics, Cambridge University (England), 1977.
Areas of Interest
Neutron Stars. Pulsars. X-ray binaries
Awards
  • Award for Best Teacher - Sabancı University - choice of the Graduating Class  2003
  • Award for Best Teachers - Mustafa Parlar Foundation - METU Graduating Class  1994
  • Science Prize - TÜBİTAK & Third World Academy of Sciences  1992
  • Sedat Simavi Award, Physical Sciences - Turkish Newspaper 'Hurriyet'  1988
  • Encouragement Award - TÜBİTAK  1986
Memberships
The Science Academy - Turkey (2011- , President) Türkiye Bilimler Akademisi (1993- resigned: 2011) Academia Europaea American Philosophical Society Türk Astronomi Derneği European Astronomical Society
Publications
  • Article
    Alpar, M. Ali (2016) "QPO frequency derivative-frequency correlation indicates non-Keplerian boundary layer with a maximum in rotation rate", Monthly Notices of the Royal Astronomical Society, Vol.462, No.1, L98-L100 (SCI)
    Göğüş, Ersin and Lin, Lin and Kaneko Göğüş, Yuki and Kouveliotou, Chryssa and Watts, Anna L. and Chakraborty, Manoneeta and Alpar, M. Ali and Huppenkothen, Daniela and Roberts, Oliver J. and Younes, George and Van der Horst, Alexander J. (2016) "Magnetar-like x-ray bursts from a rotation-powered pulsar, PSR J1119-6127", Astrophysical Journal Letters, Vol.829, No.2, L25-L25 (SCI)
    Gügercinoğlu, Erbil and Alpar, M. Ali (2016) "Microscopic vortex velocity in the inner crust and outer core of neutron stars", Monthly Notices of the Royal Astronomical Society, Vol.462, No.2, 1453-1460 (SCI)
    Akbal, Onur and Gügercinoğlu, Erbil and Şaşmaz Muş, Sinem and Alpar, M. Ali (2015) "Peculiar glitch of PSR J1119-6127 and extension of the vortex creep model", Monthly Notices of the Royal Astronomical Society, Vol.449, No.1, 933-941 (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)
    Feroci, M. and den Herder, J. W. and Bozzo, E. and Barret, D. and Brandt, S. and Hernanz, M. and van der Klis, M. and Pohl, M. and Santangelo, A. and Stella, L. and Watts, A. and Wilms, J. and Zane, S. and Ahangarianabhari, M. and Albertus, C. and Alford, M. and Alpar, M. Ali and Altamirano, D. and Alvarez, L. and Amati, L. and Amoros, C. and Andersson, N. and Antonelli, A. and Argan, A. and Artigue, R. and Artigues, B. and Atteia, J.-L. and Azzarello, P. and Bakala, P. and Baldazzi, G. and Balman, S. and Barbera, M. and van Baren, C. and Bhattacharyya, S. and Baykal, A. and Belloni, T. and Bernardini, F. and Bertuccio, G. and Bianchi, S. and Bianchini, A. and Binko, P. and Blay, P. and Bocchino, F. and Bodin, P. and Bombaci, I. and Bonnet Bidaud, J.-M. and Boutloukos, S. and Bradley, L. and Braga, J. and Brown, E. and Bucciantini, N. and Burderi, L. and Burgay, M. and Bursa, M. and Budtz-Jørgensen, C. and Cackett, E. and Cadoux, F. R. and Cais, P. and Caliandro, G. A. and Campana, R. and Campana, S. and Capitanio, F. and Casares, J. and Casella, P. and Castro-Tirado, A. J. and Cavazzuti, E. and Cerda-Duran, P. and Chakrabarty, D. and Château, F. and Chenevez, J. and Coker, J. and Cole, R. and Collura, A. and Cornelisse, R. and Courvoisier, T. and Cros, A. and Cumming, A. and Cusumano, G. and D'Ai, A. and D'Elia, V. and Del Monte, E. and De Luca, A. and De Martino, D. and Dercksen, J. P. C. and De Pasquale, M. and De Rosa, A. and Del Santo, M. and Di Cosimo, S. and Diebold, S. and Di Salvo, T. and Donnarumma, I. and Drago, A. and Durant, M. and Emmanoulopoulos, D. and Erkut, M. H. and Esposito, P. and Evangelista, Y. and Fabian, A. and Falanga, M. and Favre, Y. and Feldman, C. and Ferrari, V. and Ferrigno, C. and Finger, M. and Finger, M. H. and Fraser, G. W. and Frericks, M. and Fuschino, F. and Gabler, M. and Galloway, D. K. and Galvez Sanchez, J. L. and Garcia-Berro, E. and Gendre, B. and Gezari, S. and Giles, A. B. and Gilfanov, M. and Giommi, P. and Giovannini, G. and Giroletti, M. and Göğüş, Ersin and Goldwurm, A. and Goluchová, K. and Götz, D. and Gouiffes, C. and Grassi, M. and Groot, P. and Gschwender, M. and Gualtieri, L. and Guidorzi, C. and Guy, L. and Haas, D. and Haensel, P. and Hailey, M. and Hansen, F. and Hartmann, D. H. and Haswell, C. A. and Hebeler, K. and Heger, A. and Hermsen, W. and Homan, J. and Hornstrup, A. and Hudec, R. and Huovelin, J. and Ingram, A. and in't Zand, J. J. M. and Israel, G. and Iwasawa, K. and Izzo, L. and Jacobs, H. M. and Jetter, F. and Johannsen, T. and Jacobs, H. M. and Jonker, P. and Josè, J. and Kaaret, P. and Kanbach, G. and Karas, V. and Karelin, D. and Kataria, D. and Keek, L. and Kennedy, T. and Klochkov, D. and Kluzniak, W. and Kokkotas, K. and Korpela, S. and Kouveliotou, C. and Kreykenbohm, I. and Kuiper, L. M. and Kuvvetli, I. and Labanti, C. and Lai, D. and Lamb, F. K. and Laubert, P. P. and Lebrun, F. and Lin, D. and Linder, D. and Lodato, G. and Longo, F. and Lund, N. and Maccarone, T. J. and Macera, D. and Maestre, S. and Mahmoodifar, S. and Maier, D. and Malcovati, P.{| (2014) "The large observatory for x-ray timing", Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray (Proceedings of SPIE), Vol.9144 (SCI)
    Gügercinoğlu, Erbil and Alpar, M. Ali (2014) "Vortex creep against toroidal flux lines, crustal entrainment, and pulsar glitches", Astrophysical Journal Letters, Vol.788, No.1 (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)
    Alpar, M. Ali (2012) "On kHz oscillations and characteristic frequencies of accreting magnetospheres", Monthly Notices of the Royal Astronomical Society, Vol.423, No.4, 3768-3774 (SCI)
    Patruno, Alessandro and Alpar, M. Ali and Van der Klis, Michiel and Van den Heuvel, Ed P. J. (2012) "The peculiar evolutionary history of IGR J17480-2446 in Terzan 5", The Astrophysical Journal, Vol.752, No.1 (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)
    Sidery, Trevor Llyod and Alpar, M. Ali (2009) "The effect of quantized magnetic flux lines on the dynamics of superfluid neutron star cores", Monthly Notices of the Royal Astronomical Society, Vol.400, No.4, 1859-1867 (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)
    Erdeve, Işıl and Kalemci, Emrah and Alpar, M. Ali (2009) "Hard X-Ray flux upper limits of central compact objects in supernova remnants", The Astrophysical Journal, Vol.696, No.2, 1792-1797 (SCI)
    Alpar, M. Ali (2007) "Dim isolated neutron stars, cooling and energy dissipation", Astrophysics and Space Science, Vol.308, No.1-4, 133-136 (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)
    Göğüş, Ersin and Alpar, M. Ali and Gilfanov, Marat (2007) "Is the lack of pulsations in low mass X-Ray binaries due to comptonizing coronae?", The Astrophysical journal, Vol.659, No.1, 580-584 (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)
    Alpar, M. Ali and Baykal, Altan (2006) "Pulsar braking indices, glitches and energy dissipation in neutron stars", Monthly notices of the Royal Astronomical Society, Vol.372, No.1, 489-496 (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)
    Ekşi, Kazım Yavuz and Alpar, M. Ali (2005) "Disks surviving the radiation pressure of radio pulsars", Astrophysical Journal, Vol.620, No.1, 390-397 (SCI)
    Erkut, Mehmet Hakan and Alpar, M. Ali (2004) "On the rotational dynamics of magnetically threaded disks around neutron stars", Astrophysical Journal, Vol.617, No.1, 461-470 (SCI)
    Ögelman, H. and Alpar, M. Ali (2004) "Constraints on a putative pulsar in SN 1987A", Astrophysical Journal, Vol.603, No.1, L33-L35 (SCI)
    Ekşi, Kazım Yavuz and Alpar, M. Ali (2003) "Can thin disks produce anomalous X-ray pulsars?", Astrophysical Journal, Vol.599, No.1, 450-456 (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)
    Baykal, Altan and Strohmayer, Tod and Swank, Jean and Alpar, M. Ali and Stark, Michael J. (2000) "Differences between the two anomalous X-ray pulsars: variations in the spin-down rate of 1E 1048.1-5937 and an extended interval of quiet spin-down in 1E 2259+586", Monthly Notices of the Royal Astronomical Society, Vol.319, No.1, 205-208 (SCI)
  • Book Section / Chapter
    Alpar, M. Ali, "Nötron yıldızlarında üstünakışkanlık ve üstüniletkenlik", Anı Kitabı: Bilim, Kişi ve Toplum Üzerine Çalışmalar, Akyüz, Asuman and Dayı, Ömer Faruk and Durukanoğlu Feyiz, Sondan and Özbek, Sevtap Yıldız (eds.), İstanbul: Sabancı Üniversitesi 2012, 94-97
  • 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
    Alpar, M. Ali, "Neutron star superfluidity, dynamics and precession", Baykal, Altan and Yerli, S.K. and Inam, S.C. and Grebenev, Sergei (eds.), 6th NATO-Advanced-Study-Institute on Electromagnetic Spectrum of Neutron Stars, New York, USA: Springer, December 2005, 33-46
    Ekşi, Kazım Yavuz and Alpar, M. Ali, "Thin disk models of anomalous X-ray pulsars", 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, 524-529
    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
  • Before SU Publications

    1."Lifetime Effect on the Superfluidity in Neutron Stars"

      Naoki Itoh & M. A. Alpar,  J. Phys. A7, 1970 (1974).

    2."Positively Charged Isospin Wave Softening & Proton Lattice in Neutron Stars"

      P.W. Anderson, N.Itoh, M.A.Alpar, E.Tosatti, & R.G.Palmer, Lett. Nuovo Cimento  12 , ser.2., 165 (1975).

    3."Pinning and Threading of Quantized Vortices in the Pulsar Crust Superfluid"

      M.Ali Alpar, Ap.J. 213, 527 (1977).

    4."Relaxation of Rotating He II Following  a Spin-up of Its Container:

      A Superfluid Ekman Time?" M. Ali Alpar, J. Low Temp. Phys. 31, 803 (1978).

    5."Modulation of Short-period Oscillations and Colour Asymmetry in Pulsed

      Emission Lines: A Structural Interpretation of Recent Observations of DQ Her"

      M. Ali Alpar, M.N.R.A.S.189, 305 (1979).

    6."Pinned Vorticity in Rotating Superfluids with Application to Neutron Stars"

      D.Pines, J.Shaham, M.Ali Alpar & P.W. Anderson,

      Progress of Theoretical Physics Supplement 69, 376 (1981).

    7."Giant Glitches and Pinned Vorticity in the Vela and Other Pulsars"

      M. Ali Alpar, P.W. Anderson, D. Pines & J. Shaham,

      Ap. J. Letters, 249, L29 (1981).

    8."Glitches and Pinned Vorticity in the Crab Pulsar"

      M. Ali Alpar, P.W. Anderson, D. Pines & J. Shaham,

      Proc. Nat. Acad. Sci. USA 78, 5299 (1981).

    9."The Rheology of Neutron Stars: Vortex Line Pinning in the Crust Superfluid"

      P.W.Anderson,A.Alpar,D.Pines &J.Shaham,Phil.Mag.A45,227(1982).

    10."A New Class of Radio Pulsars"

      M.Ali Alpar, A.F. Cheng, M.A.Ruderman & J. Shaham, Nature 300, 728, (1982).

    11."Expectancy of Large Pulsar Glitches"

      M.Ali Alpar & Cheng Ho, M.N.R.A.S. 204, 655 (1983).

    12."Vortex Creep and the Internal Temperature of Neutron Stars:

      I. General Theory" M.A.Alpar,P.W.Anderson,D.Pines & J.Shaham,

      Ap. J. 276,325(1984).

    13."Vortex Creep and the Internal Temperature of Neutron Stars:

      II.The Vela Pulsar" M.A.Alpar,P.W.Anderson,D.Pines & J.Shaham,

      Ap.J. 278,791(1984).

    14."Rapid Postglitch Spin-up of the Superfluid Core in Pulsars"

      M.A.Alpar, S.A.Langer & J.A.Sauls, Astrophysical Journal, 282, 533 (1984).

    15."Vortex Creep and the Internal Temperature of Neutron Stars:

      The Crab Pulsar and PSR0525+21"

      M.A.Alpar,R.Nandkumar & D.Pines,Ap.J.,288,191(1985).

    16."Gravitational Radiation from a Solid Crust Neutron Star"

      M.Ali Alpar  & David Pines, Nature, 314, 334 (1985).

    17."Separable Solutions for a Rotating Superfluid-Normal Fluid System"

      M.A.Alpar & K.S. Cheng, Journ. Low Temp. Phys.,60, 415 (1985).

    18."Superfluidity in Neutron Stars"

      David Pines & M.Ali Alpar, Nature, 316, 27 (1985).

    20."Is GX 5-1 a Millisecond Pulsar?"

      M.A.Alpar & J.Shaham, Nature, 316, 239 (1985).

    21."Quasiperiodic Oscillations in Bright Galactic-bulge X-ray Sources"

      F.K.Lamb, N. Shibazaki, M.A.Alpar & J.Shaham, Nature, 317, 681 (1985).

    22."Vortex Creep and the Internal Temperature of Neutron Stars:

      Timing Noise in Pulsars" M.Ali Alpar, Radha Nandkumar & David Pines,

      Ap. J. 311, 197 (1986) .

    23."Model QPO Power Spectra: Signatures of Angular Position and Radial Velocity   of Clumps in the Boundary Layer"

      M.Ali Alpar, M.N.R.A.S. 223,469 (1986).

    24."A Search for X-ray Emission from a Nearby Pulsar : PSR 1929+10" .

      M.A.Alpar, W.Brinkmann, U.Kiziloglu,H.Ogelman & D.Pines,A&A,177,101 (1987).

    25."Comment on Strange Stars" M.A.Alpar, Phys. Rev. Lett., 58,2152 (1987).

    26."Neutron Star Precession and the Dynamics of the Superfluid Interior"

      M.Ali Alpar & H.Ogelman, Astronomy & Astrophysics 185, 196 (1987).

    27."On the Dynamical Coupling between the Superfluid Interior

      and the Crust of a Neutron Star" M.A.Alpar & J.A.Sauls,

      Ap.J. 327, 723 (1988).

    28."The Large Glitch from PSR 0355+54 and its Postglitch Relaxation"

      M.A.Alpar, K.S.Cheng, D.Pines & J.Shaham, M.N.R.A.S. 233, 25 (1988).

    29."Spontaneous Superfluid Unpinning and the Inhomogeneous Distribution of

      Vortex Lines in Neutron Stars" K.S. Cheng, M.A. Alpar, D. Pines & J. Shaham,

      Ap.J. 330, 835  (1988).

    30."The Remnant's Rapid Heartbeat" M.A.Alpar, I.Fushiki, F.K.Lamb, G.S.Miller,

      M.-G. Park & D. Pines, Nature 338, 295 (1989).

    31."Vortex Creep and the Internal Temperature of Neutron Stars:

      Linear and Nonlinear Response to a Glitch" M.A. Alpar, K.S. Cheng & D.Pines,

      Ap.J. 346, 823 (1989).

    32."Spin-up of Young Pulsars due to Rapid Cooling by Neutrino Emission"

      M.Ali Alpar & Hakki B. Ogelman, Ap.J. Letters 349, L55 (1990).

    33."On the Fast Recovery of the Vela Pulsar from its Christmas 1988 Glitch",

      M.A.Alpar, K.S. Cheng and D.Pines, Nature 348 ,707 (1990).

    34."A Shot Noise Model for a Two Component  Neutron Star"

      A.Baykal, M.A.Alpar and U.Kiziloglu, Astronomy & Astrophysics 185, 196 (1991).

    35."6 Hz QPOs from Low Mass X-ray Binaries: the Sound of an Accretion Disk?"

      M.A.Alpar, G.Hasinger, J.Shaham and S.Yancopoulos,

      Astronomy & Astrophysics 257, 627 (1992).

    36."Postglitch Relaxation of the Vela Pulsar after its First Eight Glitches:

      A Re-evaluation with the Vortex Creep Model"

      M.A.Alpar, H.F.Chau, K.S.Cheng and D.Pines, Ap. J. 409,345 (1993).

    37."Implications of the Crustal Moment of Inertia for

      Neutron Star Equations of State", B.Datta and M.A.Alpar,

      Astronomy and Astrophysics 275, 210 (1993).

    38."Is Geminga a Glitching Pulsar?" M.A.Alpar, H.Ogelman and J.Shaham,

      Astronomy and Astrophysics 273, L35 (1993).

    39."Postglitch Relaxation of the Crab Pulsar:

      Evidence for Crust Cracking" M.A.Alpar, H.F.Chau, K.S.Cheng and D.Pines,

      Ap. J. Letters 427, L29 (1994).

    40."Expectancy of Large Pulsar Glitches: A Comparison of Models with

      the Observed Glitch Sample" M.Ali Alpar and Altan Baykal,

      M.N.R.A.S. 269,849(1994).

    41."On the Distribution and Evolution of Pulsars",

      M.A.Alpar, F.Gok, O.Huseyinov and U.Kiziloglu,

      Turkish J. of Phys. 18, 970 (1994).

    42."A Search for X-Rays from Five Pulsars: PSR's 0740-28, 1737-30,

     1822-09, 1915+13 and 1916+14"

     M.A.Alpar,O.H.Guseinov, U.Kiziloglu and H.Ogelman

     Astronomy and Astrophysics, 297, 470 (1995).

    43."X-ray Variability and 1mHz Oscillations in TT Arietis"

     A.Baykal,A.Esendemir,U.Kiziloglu,M.A.Alpar,H.Ogelman,N.Ercan and G.Ikis

     Astronomy and Astrophysics, 299, 421 (1995).

    44."Postglitch Relaxation of the Crab Pulsar After its Four Major

    Glitches: The Combined Effects of Crust Cracking, Formation of Vortex

    Depletion Regions and Vortex Creep"

     M.A.Alpar, H.F.Chau, K.S.Cheng and D.Pines

     Ap.J. 459, 706 (1996).

    45. "On Pulsar Velocities and Pulsar Supernova Remnant Associations"

     A.O. Allakhverdiev, M.A. Alpar, F. Gok and O.H. Guseinov

     Turkish J. of Phys., 21, 688 (1997).

    46. "AB Dor: an Almost Single Star with RS CVn-like Activity in the

     X-ray Band", M. Alev, M.A.Alpar, A. Esendemir, U. Kiziloglu,

     Astrophysics and Space Sci., 245, 15 (1996).

    47. "Modelling of Quasi Periodic Oscillations with Wave Packets"

     M.A. Alpar and A. Yilmaz, New Astronomy, 2, 225 (1997).

    48. "On the Outburst Light Curves of Soft X-Ray Transients as Response

     of the Accretion Disk to Mass Deposition", Ü. Ertan and M. A. Alpar,

     Astronomy and Astrophysics  336, 220 (1998).

    49. "Planetary Nebulae in Open Clusters and the Mass Boundary Between

    the Progenitors of White Dwarfs and Neutron Stars"

     A.O. Allakhverdiev, M.A. Alpar, O.H. Guseinov and E. Tuncer

     Astronomical and Astrophysical Transactions, 16, 41 (1998).

    50. "The Timing Noise of PSR 0823+26, 1706-16, 1749-28, 2021+51 and the

    Anomalous Braking Indices"

     A. Baykal, M.A.Alpar, P.E.Boynton and J.E.Deeter,

     M.N.R.A.S. 306, 207 (1999).

    51. "ROSAT Observations of the Vela Pulsar"

     F. Seward, M.A. Alpar, C. Flanagan, Ü. Kızıloğlu, C. Markwardt

     P. McCulloch and H. Ögelman, ApJ 536, 948 (2000).

    52. "Post-glitch RXTE-PCA Observations of the Vea Pulsar"

     M.A. Gürkan, A. Baykal, M.A.Alpar, H. Ögelman and T. Strohmayer,

     Astronomy and Astrophysics 356, 1136 (2000).

    53. "Differences between Two Anomalous X-ray Pulsars..."

     A. Baykal, T. Strohmayer, J. Swank, M.A. Alpar, M.J. Stark,

     M.N.R.A.S. 319, 205 (2000).

    54. "On Young Neutron Stars as Propellers and Accretors with Conventional Magnetic Fields", M.A. Alpar,Ap.J. 554, 1245 (2001).

    55.  "Pulsar Spindown by a Fallback Disk and the P-Pdot Diagram"

     M.A. Alpar, A. Ankay and E. Yazgan,

     Ap. J. Letters, 557, L61 (2001).

    56. "The Steady Spin Down Rate of 4U 1907+09"

     A. Baykal, Ç. İnam, M.A. Alpar, J. J. In't Zand, T. Strohmayer,

     J. Swank, M.N.R.A.S. 327, 1269 (2001).

    57. "On the outbursts of black hole soft X-ray transients"

     Ü. Ertan and M.A. Alpar

     Astronomy and Astrophysics 393,205 (2002).

    58. "First Hours of the GRB 030329 Optical Afterglow"

     R.A. Burenin, R.A. Sunyaev, M.N. Pavlinsky, D.V. Denissenko,

     O.V. Terekhov, A. Yu. Tkachenko, Z. Aslan, I. Khamitov, K. Uluç,

     M.A. Alpar, Ü. Kızıloğlu, A. Baykal, I. Bikmaev, N. Sakhibullin,

     V. Suleymanov, Astronomy Letters 29/9, 1 (2003).

    59. "On the Enhanced X-Ray Emission from SGR 1900+14 after the August 27 Giant Flare"

     Ü. Ertan and M.A. Alpar, Ap.J. Letters 593, L93 (2003).

    60. "Can thin disks produce Anomalous X-ray Pulsars?"

     Y. Ekşi and M.A. Alpar, Ap.J. 599, 450 (2003).

    61. "Constraints on a Putative Pulsar in SN 1987A"

     H. Ögelman and M.A. Alpar, Ap.J. Letters 603, L33 (2004).

    62. "On the Rotational Dynamics of Magnetically Threaded Disks Around Neutron Stars"

     M. H. Erkut and M.A. Alpar, Ap.J. 617, 461 (2004).

    63. "Disks Surviving the Radiation Pressure of Radio Pulsars"

     Y. Ekşi and M.A. Alpar, Ap.J. 620, 390 (2005).

    64. "X-Ray and Infrared Enhancement of Anomalous X-ray Pulsar 1E  2259+58"  Ü. Ertan, E. Göğüş and M.A. Alpar, Ap.J. 640, 435 (2006).

    65. "Pulsar Braking Indices, Glitches and Energy Dissipation in Neutron Stars", M.Ali Alpar and Altan Baykal,

    M.N.R.A.S. 372,489 (2006).

    66. "The Anomalous X-Ray Pulsar 4U 0142+61: A Neutron Star with a Gaseous Fallback Disk",

    Ertan, Ü., Erkut, M.H., Ekşi, K.Y., Alpar, M.A.,

    Ap.J. 657, 441 (2007).

    67. "Is the Lack of Pulsations in Low-mass X-ray Binaries due to Comptonizing Coronae?" E. Göğüş, M.A. Alpar and M. Gilfanov,

      Ap.J. 659, 580 (2007).

    68. “Quasi-periodic Oscillations as Global Hydrodynamic Modes in the Boundary Layers of Viscous Accretion Disks”  Erkut, M.H., Psaltis, D. and Alpar, M.A.,

    Ap.J. 687, 1220 (2008).

    69. “The Highest Dynamical Frequency in the Inner Region of an Accretion Disc”

    Alpar, M.A. and Psaltis, D., M.N.R.A.S. 391, 1472 (2008).

    70. "Hard X-Ray Flux Upper Limits of Central Compact Objects in Supernova Remnants", I. Erdeve, E. Kalemci

    & M.Ali Alpar, Ap.J. 696,1792 (2009).

    71. "On the Evolution of Anomalous X-Ray Pulsars and Soft Gamma-Ray Repeaters with Fall Back Disks", Ü.Ertan, K.Y. Ekşi, M.H. Erkut and M.A. Alpar,

    Ap.J. 702, 1309 (2009).

    Yayınlanmış Bildiriler:

    1."Pulsar Glitches and Pinned Superfluidity "

     P.W. Anderson, M. Ali Alpar, D. Pines & J. Shaham,

     Proceedings of IAU Symposium No. 95,"Pulsars",

     R. Wielebinski & W. Siebert, eds.,(1980).

    2."Superfluidity in Millisecond Pulsars" David Pines & M.Ali Alpar,

     Proc. of the Workshop on Millisecond Pulsars,

     S. Reynolds & D. Stinebring,eds., Greenbank, W.Virginia, USA (1984).

    3."Gravitational Radiation from a Solid Crust Neutron Star"

     M.Ali Alpar & David Pines,

     Proc. of the Workshop on Millisecond Pulsars,

     S. Reynolds & D. Stinebring,eds., Greenbank, W.Virginia, USA (1984).

    4."Internal Torques in Neutron Stars"

     M.Ali Alpar, Proc. of the Symposium on X-ray Astronomy,

     M. Oda & R. Giacconi,eds., Bologna,(1984).

    5."Quasiperiodic Oscillations in Galactic Bulge Sources: Information

     on the Boundary Layer from Power Spectra"

     Proc. NATO ASI "High Energy Phenomena around Collapsed Stars",

     F.Pacini, ed., Reidel (1987).

    6."Dynamics of the Neutron Star Interior " M.A.Alpar,

     Proc.13th Texas Symposium on Relativistic Astrophysics,

     M.Ulmer,ed.,WorldScientific (1987).

    7."Inside Neutron Stars" M. Ali Alpar,

     Proc. NATO ASI "Timing Neutron Stars", H.Ogelman & E.P.J. van den Heuvel, eds., Kluwer (1989).

    8."Vortex Creep Dynamics: Theory and Observations" M.Ali Alpar,

     Proc. NATO ASI "Timing Neutron Stars", H.Ogelman & E.P.J. van den Heuvel, eds.,

     Kluwer (1989).

    9."Superfluid Dynamics in Neutron Stars" M.A. Alpar,

     Proc. NATO ASI "Neutron Stars: Theory and Observation",

     J.Ventura & D.Pines, eds., Kluwer (1991).

    10."Inside Neutron Stars: a 1990 Perspective" D.Pines and M.Ali Alpar,

     Proc. US-Japan Seminar "The Structure and Evolution of Neutron Stars",

     D.Pines, R.Tamagaki and S.Tsuruta, eds., Addison-Wesley (1992).

    11."Some Topics in Neutron Star Superfluid Dynamics" M.Ali Alpar,

     Proc. US-Japan Seminar "The Structure and Evolution of Neutron Stars",

     D.Pines, R.Tamagaki and S.Tsuruta, eds., Addison-Wesley (1992).

    12."Pulsar Glitches and Neutron Star Superfluidity: a 1992 Perspective",

     M.A.Alpar and D.Pines,

     Proc. The Los Alamos Workshop "Isolated Pulsars",

     K.A.Van Riper, R.Epstein and C.Ho, eds., Cambridge University Press (1993).

    13."Models for Pulsar Glitches", M.Ali Alpar,

     Proc. NATO ASI "Lives of the Neutron Stars",

     M.A.Alpar, U.Kiziloglu and J. van Paradijs, eds., Kluwer (1995).

    14."The Distribution of Pulsars in the Galaxy",

     F.Gok,M.A.Alpar,O.H.Huseyinov and U.Kiziloglu,

     Proc. NATO ASI "Lives of the Neutron Stars",

     M.A.Alpar, U.Kiziloglu and J. van Paradijs, eds., Kluwer (1995).

    15."Evolution of Pulsars in the P-Pdot Diagram",

     I.M.Yusifov, M.A.Alpar, F.Gok and O.H.Huseyinov,

     Proc. NATO ASI "Lives of the Neutron Stars",

     M.A.Alpar, U.Kiziloglu and J. van Paradijs, eds., Kluwer (1995).

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