Previous Seminars up to 2015



FRIDAY, 6 November, 2015, 12:00
"A new method for detecting molecular hydrogen in the Universe"
Dr. Thomas Bisbas, Max-Planck-Institute for Extraterrestrial Physics, University of Florida

FRIDAY, 27 March, 2015, 12:00
"Compact object mergers as multi-messenger sources"
Dr. Vasileios Paschalidis,University of Princeton

TUESDAY, 24 February, 2015, 11:00
"The progenitor problem of Supernovae Type Ia"
Giorgos Dimitriadis,University of Southampton


THURSDAY, 19 December, 2014, 12:00
"The AGN - star-formation connection: from X-rays to radio"
Eleni Kalfountzou,University of Hertfordshire

THURSDAY, 13 November, 2014, 11:00
"A Step in the Dark: The Initial Conditions of Star Formation and How they Can Be Reset"
Dr. P. Papadopoulos, Cardiff University, Wales

FRIDAY, 17 October, 2014, 12:00
"A Novel Forecasting System for Solar Particle Events and Flares (FORSPEF)"
Dr. A. Anastasiadis, IAASARS / National Observatory of Athens

FRIDAY, 6 June, 2014, 12:00
"The Robopol Project: Optical Polarization Monitoring of an Unbiazed Subset of Gammar-Ray-Loud Blazers"
Dr. E. Angelakis, MPI for Radioastronomy, Bonn

THURSDAY, 15 May, 2014, 10:00
"Early Universe Cosmology Under the Light of the PLANCK and BICEP2 Results" 
Dr. S. Vasilakos, KEAEM, Academy of Athens

WEDNESDAY, 2 April, 2014, 11:00
"Recent Cosmological Results and future prospects" 
Prof. M. Plionis, Department of Physics, AUTH 

FRIDAY, 28 March, 2014, 12:00
"Fake Hair for Black Holes"
Dr. Christos Charmousis, CNRS (LPT) Orsay

WEDNESDAY, 12 March, 2014, 11:00
"The intelligent construction of the back side of the Antikythera Mechanism"
Magdalini Anastasiou, Department of Physics, AUTH

WEDNESDAY, 5 March, 2014, 11:00
"Magnetohydrodynamical Turbulence and Particle Acceleration in Space Plasmas"
Prof. L. Vlahos, Department of Physics, AUTH

FRIDAY, 14 February, 2014, 12:00
"Solar Activity and Impact on Earth's Atmosphere and Climate"
Prof. K. Tourpali, Department of Physics, AUTH


THURSDAY, 19 December, 2013, 14:00
"The Magnetic Model for Gamma-Ray Bursts"
Dr. Ioannis Contopoulos, KEAEM, Academy of Athens

THURSDAY, 14 November, 2013, 14:00
"The Prediction of and the Discovery of the Higgs Boson (Physics Nobel Prize 2013)"
Prof. Ch. Petridou, Department of Physics, AUTH

FRIDAY, 8 November, 2013, 12:00
"Planets Around Very Big and Very Small Stars"
Prof. Andreas Quirrenbach, LSW, University of Heidelberg

THURSDAY, 7 November, 2013, 14:00
"Three-Dimensional Holographic Fluids with Nontrivial Vorticity"
Prof. Anastasios Petkou, Department of Physics, AUTH

THURSDAY, 31 October, 2013, 14:00
"Formation of Pluto's Small Satellites"
Dr. Kevin Walsh, Southwest Research Institute, USA

THURSDAY, 10 October, 2013, 14:00
"Planet Formation at Pressure Maxima of Protoplanetary Disks"
Dr. Zsolt Sandor, Institute for Astronomy, University of Vienna, Austria

TUESDAY, 28 May, 2013, 14:00
"Cosmological Geometrodynamics: from Planck to Modified Gravity"
Dr. S. Vasilakos, K.E.A.E.M. Academy of Athens

TUESDAY, 21 May, 2013, 14:00
"f(T) Gravity and Cosmology"
Prof. E. Saridakis, National Technical University of Athens, CASPER, Baylor University

FRIDAY, 17 May, 2013, 12:00
"Ultra Low Frequency (ULF) Waves in the Magnetosphere: Excitation mechanisms, Spatial distribution and their interaction with energetic particle populations"
Prof. Th. Sarris, University of Thrace

FRIDAY, 23 April, 2013, 14:00
"Unravelling the Explosion Mechanism of Massive Stars - Supernova Models Confronting Observations"
Dr. H.T. Janka, Max-Planck-Institute for Astrophysics, Garching

FRIDAY, 19 April, 2013, 13:00
"Is there a Fundamental Preferred Direction in the Universe?"
Prof. L. Perivolaropoulos, University of Ioannina

FRIDAY, 29 March, 2013, 12:00
"Mixed Neutron-Dark-Energy Stars and their Oscillation Spectrum"
Dr. D. Doneva, University of Tuebingen

FRIDAY, 8 March, 2013, 12:00
"GRB: Crisis, Some New Correlations, Back to an Old Motif and Some Light Eventually (perhaps?)!"
Dr. D. Kazanas, NASA Goddard Spaceflight Center

THURSDAY, 10 January, 2013, 14:00
"Computational Non-Ideal MHD in General Relativity"
K. Dionysopoulou, Max-Planck-Institute for Gravitational Physics, Potsdam 


TUESDAY, 18 December, 2012, 14:00
"Astrophysical Jets from 'Hairy' Black Holes"
Dr. I. Contopoulos, KEAEM, Academy of Athens

TUESDAY, 27 November, 2012, 14:00
"A New Parametric Study of Cosmic Micro-Lensing Using GPUs"
G. Vernardos, Swinburne University of Technology, Melbourne

WEDNESDAY, 3 October, 2012, 13:00
"X-ray Binary Evolution Across Cosmic Time"
Dr. T. Fragkos, Harvard-Smithsonian Center for Astrophysics

WEDNESDAY, 19 September, 2012, 13:00
"Orbital Dynamics of Spiral Arms"
Dr. P. Patsis, KEAEM, Academy of Athens

FRIDAY, 31 August, 2012, 12:00
"Pulsars as Tracers of Insterstellar Magnetic Fields"
Dr. A. Noutsos, Max-Planck-Institute for Radioastronomy, Bonn

THURSDAY, 31 May, 2012, 12:00
"Dark Energy or Dark Flows?"
Prof. Ch. Tsagas, Department of Physics, AUTH

WEDNESDAY, 23 May, 2012, 14:00
"Oscillations of a Singular Non-Linear System with Dissipation"
Maaita Tzamal-Odysseas, Department of Physics, AUTH

THURSDAY, 17 May, 2012, 12:00
"Inflation with Inflaton-Vector Interactions"
Dr. Kei Yamamoto, DAMTP, University of Cambridge

TUESDAY, 15 May, 2012, 14:00
"The formation of heavy elements - the quest for the astrophysical production site"
Dr. Andreas Bauswein, Max-Planck-Institute for Astrophysics, Garching

WEDNESDAY, 9 May, 2012, 12:00
"Non-linear Magnetic Field Extrapolation in the Solar Corona: the Force-Free Electrodynamics Method"
Dr. I. Contopoulos, KEAEM, Academy of Athens

TUESDAY, 10 April, 2012, 12:00
"Faint Images from Pulsars from Strong Plasma Lenses"
Kimon Zagkouris, University of Oxford

MONDAY, 13 February, 2012, 13:00
"The Front Dial of the Antikythera Mechanism: New Proposals"
Prof. Christian Carlos Carman, National University of Quilmes, Argentina

FRIDAY, 10 February, 2012, 12:00
"Some Thoughts on Mach's Principle and a Charactiristic Acceleration in the Universe"
Demosthenes Kazanas, National Academy of Athens, NASA/Goddard Space Flight Center

FRIDAY, 17 October, 2011, 13:00
"The Calendar and Games Dial on the Antikythera Mechanism: New Findings"
Prof. P. Iversen, Case Western Reserve University

FRIDAY 17 June, 2011, 12:30
"The nature of far-infrared emission from active galactic nuclei"
Dr. Markos Trichas
Harvard-Smithsonian Center for Astrophysics

TUESDAY 31 March & FRIDAY 1 April, 2011, 12:00
"Σκοτεινή Μάζα: Ναι, Σκοτεινή Ενέργεια: Όχι"
Dr. Κ. Κλεΐδης, ΤΕΙ Σερρών
Ν.Κ. Σπύρου, Καθηγητής Τμ. Φυσικής, ΑΠΘ

FRIDAY, 11 March, 2011, 12:00
"Μια Κοσμική Μπαταρία"
Dr. Ι. Κοντόπουλος, Κέντρο Ερευνών Αστρονομίας & Εφαρμοσμένων Μαθηματικών, Ακαδημία Αθηνών

FRIDAY, 11 February, 2011, 12:00
"Διάδοση ηλεκτρομαγνητικών κυμάτων στο πλάσμα με εφαρμογές στην Αστροφυσική και την Ελεγχόμενη Πυρηνική Σύντηξη"
Dr. Χρήστος Τσιρώνης, ΕΜΠ-ΑΠΘ

FRIDAY, 10 December, 2010, 13:00
"Particle and Heat Transport in Turbulent Plasma: A Unified Approach to Deterministic, Stohastic, Fractional and Transient Transport."
Dr. Heinz Isliker, Department of Physics, AUTH

FRIDAY, 3 December, 2010, 12:00
"Mathematical models including non-local effects. Fractional calculus. Basic Results and Applications."
Dana Constantinescu, Asc. Professor, Department of Applied Mathematics, 
University of Craiova, Romania

FRIDAY, 26 November, 2010, 12:00
"Αποκρυπτογραφώντας την τροχιακή και φασματική κατανομή των αστεροειδών"
Tsiganis Kleomenis, Lecturer, Department of Physics, AUTH

FRIDAY, 21 May, 2010, 12:00
"The astronomical events of the parapegma of the Antikythera Mechanism"
Magdalini Anastasiou, PhD Student, Department of Physics, AUTH

FRIDAY, 23 April, 2010, 12:00
"Κίνηση τεχνητού δορυφόρου γύρω από ασύμμετρο περιστρεφόμενο ουράνιο σώμα: ειδικές τροχιές τεχνητού δορυφόρου σελήνης"
Στέλλα Τζίρτη, Υπ. Διδάκτορας, Department of Physics, AUTH

FRIDAY, 12 March, 2010, 12:00
"Μη ολοκληρωσιμότητα και συνέχιση περιοδικών τροχιών 
 σε διαταραγμένα Χαμιλτονιανά συστήματα"
Ass. Prof. E. Meletlidou, Department of Physics, AUTH

FRIDAY, 5 March, 2010, 12:00

"Gravitational waves from inspiralling compact binaries as a tool for testing alternative               
 theories of gravity and dark energy measurements with LISA"

Dr. Adamantios Stavridis, Washington University, St. Louis

TUESDAY, 9 February, 2010, 12:00
"Quantum Theory of Inflationary perturbations"
Dr. Gerasimos Rigopoulos,  Helsinki Institute of Physics

FRIDAY, 5 February, 2010, 12:00
"Το «Εκπαιδευτικό Αστρονομικό Πάρκο Όρλιακα» στα Γρεβενά"
Prof. John Seiradakis,  Department of Physics, AUTH


FRIDAY, 18 December, 2009, 12:00
"Μελέτες Αστέρων Νετρονίων µε τα Ευρωπαϊκά Ραδιοτηλεσκόπια"
Dr. Kosmas Lazaridis,  Max-Planck-Institut für Radioastronomie, Bonn

FRIDAY, 4 December, 2009, 12:00
"Tensor Perturbations in the Early Universe"
Prof. D. Papadopoulos, Department of Physics, AUTH

FRIDAY, 6 November, 2009, 12:00
"Supernova explosions and particle acceleration: A review"
Prof. L. Vlahos, Department of Physics, AUTH

WEDNESDAY, 30 September, 2009, 13:00
"The Flare-CME Connection in Cycle 24: The Quest for Harmony"
Dr. Angelos Vourlidas, Naval Research Lab - Solar Physics Branch

FRIDAY, 10 April, 2009, 12:00
"Η φύση των ενεργών γαλαξιών σε ιεραρχικά κοσμολογικά μοντέλα"
Νίκος Φανιδάκης, Univ. of Durham, UK

THURSDAY, 15 January 2009, 14:00
"Προσομοιώσεις εξέλιξης περιοχών ιονισμένου υδρογόνου"
Θωμάς Μπίσμπας, Univ. of Cardif, UK


THURSDAY, 20 November 2008, 14:00
"Έκτακτες ροές ενεργειακών (>70 Kev) ηλεκτρονίων στην εγγύς μαγνητόσφαιρα ως προσεισμικά σήματα: παρατηρήσεις από τον δορυφόρο DEMETER"
Γ. Αναγνωστόπουλος, Δημοκρίτειο Πανεπιστήμιο Θράκης

FRIDAY, 14 November 2008, 12:00
"Gas in Galaxies: dynamic probe and star formation fuel"
Π. Παπαδόπουλος, Argelander Institut fur Astronomie, Univ. of Bonn, Germany  

FRIDAY, 10 October 2008, 12:00
"Blue compact dwarf galaxies: born to be wild"
Π. Παπαδερός, Instituto de Astrophysica de Andalucia-CSIC

TUESDAY, 30 September 2008, 12:00
"Seeing the Sun and Heliosphere with new eyes: recent results from the SECCHI telescopes aboard the STEREO mision"
Α. Βουρλίδας, Naval Research Laboratory, Washington DC, USA

TUESDAY, 23 September 2008, 11:30
"ESA's programme on Life and Physical Science in Space-Reasearch and Applications from the Space Station to future Human Exploration"
Marc Heppener, ESA Executive
Poster (in Greek)

WEDNESDAY, 25 June 2008, 12:00
"A parameter-free method for measuring the extragalactic background light: GLAST application to the lobes of Fornax A"
Μ. Γεωργανόπουλος, Johns Hopkins University, USA

FRIDAY, 23 May 2008, 12:00
"GAMMA PROJECT (Μελέτη των Ενεργών Γαλαξιακών Πυρήνων στην εποχή του δορυφόρου GLAST)" 
Μ. Αγγελάκης,  Max Planck Institut Bonn, Germany 

TUESDAY, 4 March 2008, 11:00
"The fundamendal instability of solar eruptions"
Μ. Γεωργούλης, Johns Hopkins University, USA

FRIDAY, 14 December, 2007, 12:00
"Numerical Performance of PADM formulation compared to that of the ADM and KST systems"
Β. Πασχαλίδης, University of Chicago

FRIDAY, 23 November, 2007, 14:00
"Plasma sheet contribution to the ring current during storm-time isolated an periodic substorms"
Α. Μεταλληνού, ΕΕΑ/ΑΠΘ

WEDNESDAY, 24 October, 2007, 14:00
"Cluster observations of electromagnetic waves in the terrestrial magnetotail"
Dr. Π. Πετκάκη, British Antarctic Survey

FRIDAY, 19 October, 2007, 12:00
"MHD turbulence in astrophysics"
Dr. Α. Αλεξάκης, Observatoire De Nice, France
[Download talk, ]

THURSDAY, 27 September, 2007, 13:00
"From gravitation theories to a theory of gravitation"
Dr. Θ. Σωτηρίου, SISSA, Trieste
[Download talk, ]

THURSDAY, 13 September, 2007, 13:00
"Auroral Poleward Boundary Intensifications (PBIs) and Plasma Sheet Dynamics"
E. Ζέστα, UCLA
[Download talk, ]

TUESDAY, 11 September, 2007, 12:00
"High Frequency QPO from random X-ray bursts around rotating black holes"
Δ. Καζάνας, NASA/Goddar Space Flight Center 

FRIDAY, 7 September, 2007, 12:00
"Ultra-High Energy cosmic-ray astrophysics with the Pierre Auger observatory"
Β. Παυλίδου, University of Chicago

FRIDAY, 7 September, 2007, 11:00
"Are Galactic winds shaping the properties of dwarf galaxies?"
Κ. Τάσσης, University of Chicago

WEDNESDAY, 6 June, 2007, 11:00
"Electron acceleration in solar flares: X-ray observations"
Sam Krucker, University of California, Berkeley, USA

FRIDAY, 25 May, 2007, 12:00
"Μετανάστευση Πλανητών"
Κ. Τσιγάνης, Τμήμα Φυσικής ΑΠΘ

THURSDAY, 6 April, 2007, 12:00
"Νευτώνεια Θεωρία της Βαρύτητας: Αρνητική Μάζα, Απώστική Βαρύτητα, Συνέπειες"
Ν.Κ. Σπύρου, Τμήμα Φυσικής ΑΠΘ

FRIDAY, 5 March, 2007, 12:00
"General relativistic simulations of the magneto-rotational core
collapse with microphysics"
Pablo Cerda-Duran, MPA, Garching
[Download talk, ] 

FRIDAY, 23 February, 2007, 12:00
"Exploring AGN Variability with Fourier Resolved Spectroscopy"
Ζαχαρίας Ιωάννου, Παν. Κρήτης 

FRIDAY, 12 January, 2007, 12:00
"Brane Cosmological Models in Six Dimensions"
Ε. Παπαντωνόπουλος, Τομέας Φυσικής, ΕΜΠ


FRIDAY, 21 December, 2006, 14:00
"Infrared Properties of Interacting Galaxies: from Spirals to ULIRGs"
Β. Χαρμανδάρης, Πανεπιστήμιο Κρήτης 

TUESDAY, 19 December, 2006, 14:00
"Diffusive transport in periodic and random potentials"
G.A. Pavliotis, Imperial College, UK 

FRIDAY, 8 December, 2006, 12:00
"Οι Ηλιακές Εκλάμψεις ως Κοσμικός Επιταχυντής"
Λ.Βλάχος, Τμήμα Φυσικής, ΑΠΘ

FRIDAY, 24 November, 2006, 12:00
"Χάος και (μη-) προβλεψιμότητα"
Σ. Ιχτιάρογλου, Τμήμα Φυσικής, ΑΠΘ
[Download talk, English version Greek version ] 

FRIDAY, 10 November, 2006, 13:00
"General Relativistic MHD Simulations of Magnetized Tori"
Dr. Pedro Mondero,   Departmento de Astronomica y Astrofisica, Universidad de Valencia 

THURSDAY, 21 September, 2006, 12:00
"A Relativistic extension of Cowling's theorem"
Θωμάς Ζαννιάς, Instituto de Fisica y Mathematicas, Universidad Michoacana, Mexico

WEDNESDAY, 13 September 2006, 12:00 
"Auroral Poleward Boundary Intensifications (PBIs) and Plasma Sheet Dynamics" 
Dr. Eftyhia Zesta, Dept of Atmospheric and Oceanic Sciences University of California. Los Angeles
[Download talk  ]

THURSDAY, 4 May 2006, 12:00 
"Recent advances in extrasolar planet research"
Dr. Fathi Namouni, Observatoire de la Cote d' Azur - Nice, CNRS, France 

THURSDAY, 6 April 2006, 12:00
"Newtonian theory of gravity: negative mass, repulsive gravity, consequences"
Prof. N.K. Spyrou, Department of Physics, Aristotle University of Thessaloniki

THURSDAY, 9 March 2006, 12:00
"Particle acceleration in a turbulent electric field produced by three-dimensional reconnecion"
Dr. Marco Onofri, Department of Physics, Aristotle University of Thessaloniki

TUESDAY, 21 February, 2006, 12:00
"Mirage Inflation"
Dr. Christiano Germani,  DAMTP, University of Cambridge, UK


FRIDAY, 7 December, 2005, 15:00
"An Introduction to Relativistic Hydrodynamics and Magnetohydrodynamics"
Prof. J. A. Font, Department of Astronomy and Astrophysics, University of Valencia
[Download talk  ]

TUESDAY, 1 November, 2005, 11:00
"Dynamics of the 3-Body Problem and Applications to Resonances in the Kuiper Belt"
Dr. Thomas Kotoulas, Department of Physics, Aristotle University of Thessaloniki
[Download talk  ]

FRIDAY, 7 October, 2005, 11:00
"Dynamics of Galaxies with Central Black Holes or Other Central Density Peaks"
Dr. Christos Siopis, Department of Astronomy, University of Michigan

TUESDAY, 20 September, 2005, 11:00
"Stochastic Gravity and Primordial Cosmological Perturbations"
Prof. Enric Verdaguer, Department of Fundamental Physics, University of Barcelona

MONDAY, 5 September, 2005, 11:00
"The Supercritical Pile Model for Gamma-Ray Bursts"
Dr. Dimosthenes Kazanas, NASA/GSFC, Greenbelt, MD

FRIDAY, 24 June, 2005, 12:00
"Ion-Acoustic Anomalous Resistivity:Theory and Observations"
Dr. Panagiota Petkaki, British Antarctic Survey, Cambridge, UK
[Download talk  ] 

FRIDAY, 27 April, 2005, 11:00
"Dynamics of the Young Solar System"
Dr. Kleomenis Tsiganis, Observatoire de la Cote d’ Azur, Nice

FRIDAY, 3 May, 2005, 11:00
"What Are Jets of Active Galaxies made of?"
Dr. Markos Georganopoulos, Joint Center for Astrophysics, University of Maryland
[Download talk  ] 

THURSDAY, 12 April, 2005, 13:00
"The Depth of Heavens - Belief and Knowledge during 2500 Years"
Prof. Erik Hoeg, Copenhagen University Observatory

TUESDAY, 17 April, 2005, 12:00
"Smaller Alignment Index (SALI): An efficient method of chaos detection"
Dr. Charalampos Skokos,
Research Center for Astronomy and Applied Mathematics, Academy of Athens, and
Center for Research and Applications of Nonlinear Systems (CRANS), University of Patras.
[Download talk  ]

TUESDAY, 12 April, 2005, 12:00
"The SECCHI Experiment on the STEREO Mission"
Dr. Angleos Vourlidas, SECCHI Mission Scientist, 
Naval Research Laboratory, Washington DC

FRIDAY, 8 April, 2005, 11:00
"Drift Instabilities and Turbulent Excitation of Large Scale Flows"
Dr. Ingmar Sandberg, Department of Physics, AUTH

WEDNESDAY, 9 February, 2005, 11:00
"Simplified Simulations of MHD in a Solar Coronal Loop"
Dr. Eric Buchlin, Department of Astronomy and Space Sciences, University of Florence, Italy
[Download talk  ]

TUESDAY, 18 January, 2005, 12:00
"The Harmony and Symmetry in the Kepler Problem with Drag"
Prof. Peter Leach, School of Mathematical and Statistical Sciences, University of KwaZulu-Natal, Durban, South Africa

MONDAY, 17 January, 2005, 12:00
"Rotating Stars and Wave Extraction: Applications of Curvature Invariants in Astrophysical Relativity"
Dr. Marco Bruni, Sen. Lect., Institute of Cosmology and Gravitation, University of Portsmouth
[Download talk  ]

WEDNESDAY, 12 January, 2005, 12:00
"Coupling of Radial and Non-Radial Oscillations of Relativistic Stars"
Dr. Andrea Passamonti, Institute of Cosmology and Gravitation, University of Portsmouth
[Download talk  ]


FRIDAY, 15 DECEMBER, 2004, 12:00
"Adiabatic Systems "
Efi Meletlidou, Assist. Prof., Department of Physics, AUTH

FRIDAY, 12 NOVEMBER, 2004, 12:00
"Quiet-time Particle Acceleration in the Interplanetary Space"
Dr. Fabio Lepreti, Department of Physics, AUTH
[Download talk  ] 

WEDNESDAY, 10 NOVEMBER, 2004, 12:00
"Magnetoseismology of Accretion Disks and QPOs"
Dr. Jerome Petri, Astronomical Institute, University of Utrecht
[Download talk  ]

FRIDAY, 5 NOVEMBER, 2004, 12:00
"Electron Acceleration and Radial Transport in the Radiation Belts"
Dr. Dimitrios Vassiliadis, NASA/Goddard Space Flight Center
[Download talk  ]

TUESDAY 29/5/2004, 11:00
"First Scientific Results from the Spitzer Space Telescope"
Vassilios Charmandaris , Research Associate, Department of Astronomy, Cornell University
[Download talk  ] 

FRIDAY 21/5/2004, 11:00
"The Veritas family as the result of a recent asteroid collision"
Harry Varvoglis, Assoc. Prof. Department of Physics, Aristotle University of Thessaloniki

FRIDAY 14/5/2004, 11:00
"Radio Astronomy and the Square Kilometer Array"
Prof. Y. Terzian, Department of Astronomy, Cornell University,
[Download talk  ] 

WEDNESDAY 18/2/2004, 10:00
"Alfven Waves in the Solar Corona"
Dr. Rim Turkmani, Imperial College
[Download talk  ] 

FRIDAY 9/1/2004, 12:00
"Towards Spacetime Quantum Mechanics"
Dr. Charis Anastopoulos, Department of Physics, University of Patras


FRIDAY 12/12/2003, 12:15
"Yarkovsky drift in the 7/3 Kirkwood gap"
Harry Varvoglis, Assoc. Prof., Department of Physics, AUTH

FRIDAY 21/11/2003, 12:00
"Cosmic Inflation and the Curvaton Hypothesis"
Dr. Konstantinos Dimopoulos, National Center for Scientific Research DEMOKRITOS
[Download talk  ] 

FRIDAY 31/10/2003, 13:00
"Black Holes in Theories with Large Extra Dimensions"
Dr. Panagiota Kanti, University of Oxford / CERN  
[Download talk  ]

FRIDAY 24/10/2003, 12:00
"Moderm Cosmology: Mathematical Formalism and Physical Consequences"
Dr. Spyros Basilakos, National Observatory, Athens
[Download talk  ]

THURSDAY 11/10/2003, 11:00
"Numerical Simulations of MHD Turbulence at Low to Moderate Magnetic Reynolds Number"
Dr. Bernard Knaepen, Université Libre de Bruxelles
[Download talk  ]

FRIDAY 19/9/2003, 11:00
"Gamma Ray Bursts, a Personal Perspective"
Demosthenes Kazanas, Prof., NASA Goddard Space Flight Center
[Download talk  ] 

FRIDAY 13/6/2003, 11:00
"Non-linear Evolution in Cosmological Models with Dynamical Dark Energy"
Silvio Bonometto, Prof., Department of Physics, University of Milano

FRIDAY 11/7/2003, 11:00 
"Numerical Relativistic Hydrodynamics" 
Jose-Antonio Font, Assoc. Prof., Department of Astronomy and Astrophysic,
University of Valencia
[Download talk  ] 

FRIDAY 30/5/2003, 12:00 
"Gamma Ray Bursts: Key Observations and suggested interpretation" 
L. Vlahos, Assoc. Prof., Department of Physics, AUTH
[Download talk  ]

FRIDAY 23/5/2003, 12:00 
"Relativistic and Slowing Down: the Flow in the Hot Spots of Powerful Radio Galaxies and Quasars" 
Dr. Markos Georganopoulos, NASA/Goddard Space Flight Center 
[Download talk  ]

TUESDAY 13/5/2003, 12:00 
"Astrophysical Significance of Gravitational Waves from Inspiralling Binaries" 
Dr. Tomek Bulik, Nicolaus Copernicus Astronomical Center, Warsaw

TUESDAY 6/5/2003, 12:00 
"Strange Matter in Stars?" 
Dr. Dorota Gondek-Rosinska, Observatoire de Paris, Meudon

TUESDAY 8/4/2003, 12:00 
"Percolation - an alternative to diffusive particle acceleration" 
Dr. Kaspar Arzner, Institute of Astronomy, Swiss Federal Institute of Technology, Zurich

TUESDAY 1/4/2003, 12:00 
"Intermitency and Bursty Behavior In Turbulent Plasmas" 
Dr. Fabio Lepreti, Physics Department, Aristotle University of Thessaloniki

TUESDAY 18/3/2003, 12:00 
"Signatures of Magnetic Photon Absorption in the High-Energy Radiation from Pulsars" 
Bronislaw Rudak, Prof., Nicolaus Copernicus Astronomical Center, Torun

FRIDAY 14/3/2003, 12:00 
"Millisecond clocks in accreting neutron stars and black holes" 
Wlodek Kluzniak, Assoc. Prof., Zielona Gora University and Nicolaus Copernicus Astronomical Center, Warsaw

TUESDAY 4/3/2003, 12:00 
"Motion in the Asteroid Belt: Kirkwood Gaps, Stable Chaos and Local Integrals of Motion" 
Harry Varvoglis, Assoc. Prof., Aristotle University of Thessaloniki

TUESDAY 25/2/2003, 12:00 
"Morphology and dynamics of the chromospheric fine structure" 
Dr. Kostas Tziotziou, National Observatory of Athens


MONDAY 25/11/2002, 13:00 
"Dust and Mid-Infrared Properties of Interacting Galaxies and AGN" 
Dr. Vassilis Charmandaris, Astronomy Department, Cornell University

WEDNESDAY 13/11/2002, 13:00 
"The Large-Scale Environment of Galaxy Clusters, their Formation and Evolution" 
Dr. Manolis Plionis, National Observatory of Athens

FRIDAY 1/11/2002, 12:00 
"A new technique in radio pulsar observations" 
Dr. Aris Karastergiou, Max-Planck-Institute for Radioastronomy, Bonn

THURSDAY, 4/7/2001, 11:00 
"Highly Accurate Calculation of Rotating Neutron Stars" 
Dr. Marcus Ansorg, Department of Physics, Universitaet Jena

TUESDAY 21/5/2002, 12:00 
"Statistical Description of Chaotic Dynamical Systems and Applications to Celestial Mechanics" 
Harry Varvoglis, Assoc. Prof., Department of Physics, AUTH

TUESDAY 14/5/2002, 12:00 
"Rotating Relativistic Stars and Numerical Relativity" 
Nikolaos Stergioulas, Lecturer, Department of Physics, AUTH

TUESDAY 23/4/2002, 12:00 
"Numerical simulations of linear and non-linear dynamo action" 
Dr. Vassilis Archontis, Niels Bohr Institute, Copenhagen
[Download talk  ]

TUESDAY 2/4/2002, 12:00 
"Spectral evolution of classical double radio sources" 
Konstantina Manolakou

TUESDAY 26/3/2002, 12:00 
"Isochrone Resonances and Non-Twist Phenomena in Hamiltonian Systems" 
George Voyatzis, Lecturer, Department of Physics, Aristotle U. of Thessaloniki

TUESDAY 12/3/2002, 12:00 
"Gravitational waves from pulsating stars and stars in binary systems" 
Dr. Emanuele Berti, Department of Physics, Aristotle U. of Thessaloniki

TUESDAY 26/2/2002, 12:00 
"Sunspot Oscillations Observed with THEMIS" 
Dr. Kostas Tziotziou, Observatoire de Paris, Meudon


FRIDAY 14/12/2001 12:00 
"Towards a Complete Description of Spacetimes Containing Neutron Stars" 
Dr. Uli Sperhake, Physics Department, Aristotle U. of Thessaloniki

MONDAY 3/12/2001 13:00 
"Chaos, Escape and Gaps in the Asteroid Belt" 
Menios Tsiganis

FRIDAY 23/11/2001 12:00 
"The Relaxation Time in N-Body Systems" 
Dr. Christos Vozikis

FRIDAY 9/11/2001 12:00 
"Coronal Holes and the Solar Wind" 
Dr. Spyros Patsourakos, Naval Research Lab, Washington, USA

FRIDAY, 2/11 2001, 12:00 
"The Cosmological and Physical Consequences of the Preon Structure of Dark Matter" 
Prof. Vladimir Burdyuzha, Astro Space Center, Lebedev Physical Institute, Moscow

FRIDAY, 4/5 2001, 11:00 
"Studying Jupiter's Magnetosphere with Ulysses" 
Rev. G. Anagnostopoulos, Assoc. Prof., University of Thrace

WEDNESDAY, 25/4/2001, 12:00 
"Thermodynamics of Binary Black Holes and Neutron Stars" 
John L. Friedman, Prof., University of Wisonsin-Milwaukee

FRIDAY, 6/4 2001, 11:00 
"Generation of Solutions of the Einstein-Maxwell Equations" 
Demetrios Papadopoulos, Assoc. Prof., Physics Department, Aristotle U. of Thessaloniki

FRIDAY, 16/3/2001, 11:00 
"The Magnetosphere of a Rotating Neutron Star" 
Dr. Ioannis Contopoulos

FRIDAY, 2/3/2001, 11:00 
"Molecular Hydrogen in the Universe" 
Dr. Padelis Papadopoulos, ESA

FRIDAY, 9/2/2001, 11:00 
"Impact of Magnetic Fields on the R-Mode Instability" 
Luciano Rezzolla, Lecturer, SISSA Trieste

TUESDAY, 6/2/2001, 11:00 
"New Economical Templates to Detect Gravitational Waves from Inspiraling Binaries" 
Theocharis Apostolatos, Lecturer, University of Athens

FRIDAY, 2/2/2001, 11:00 
"Oscillations of Rotating Neutron Stars: Part II" 
Dr. J. Ruoff

WEDNESDAY, 24/1/2001, 11:30 
"a) Observational evidence for black holes 
b) Progress and future of the 2.3m Aristarchos telescope" 
Emilios Harlaftis, National Observatory of Athens


FRIDAY, 15/12/2000, 12:00 
"Acceleration of Charged Particles and Radiation in Accretion Disks around Black Holes" 
Assoc. Prof. L. Vlahos 

MONDAY, 4/12/2000, 13:00 
"A Study of the Integrability of Two-dimensional Potentials" 
Prof. G. Bozis

FRIDAY, 1/12/2000, 12:00 
"Oscillations of Rotating Neutron Stars" 
Dr. J. Ruoff

FRIDAY, 6/10/00, 12:00 
"Using Supercluster Geometry to Probe the Cosmological Background" 
Spyros Basilakos, Imperial College, London

THURSDAY 18/05/00, 12:00 
"X-Ray Flares and the Statistical Flare Model in Parallel: A Comparison" 
Manolis K. Georgoulis

THURSDAY 11/05/00, 12:00 
"The Structure and Evolution of Contact Binaries" 
Anastasios Kalimeris, University of Athens

TUESDAY 11/04/00, 13:00 
"Astronomy in Jugoslavia" 
Prof. M. Dimitrijevic, Belgrade Astronomical Observatory

THURSDAY 30/04/00, 13:00 
"Motion in a Field of two Attractive Centers: a Complicated "Simple" Problem." 
Assoc. Prof. H. Varvoglis

THURSDAY 16/03/00, 12:00 
"Solar Flares: From Single Events to Statistical Behavior" 
Assoc. Prof. L. Vlahos

TUESDAY, 22/2/00, 13:00 
"Space Weather" 
Prof. D. Papadopoulos, Department of Physics and Astronomy, University of Maryland, USA

THURSDAY 10/2/00, 11:30 
"Gravitational waves emitted by astrophysical sources: from a single event to a stochastic background" 
Prof. Valeria Ferrari, Dipartimento di Fisica ``G.Marconi", Universita di Roma ``La Sapienza"

TUESDAY 8/2/00, 12:00 
"Non-LTE inversion of chromospheric Ca II cloud-like features" 
Dr. Kostas Tziotziou, Departement d' Astronomie Solaire (DASOP) 
Observatoire de Paris

WEDNESDAY 2/2/00, 12:00 
"Gravitational Waves from Freely Precessing Neutron Stars" 
Dr. Ian Jones, University of Southampton, UK


TUESDAY, 21/11/00, 20:00 
"Is There Anybody Out There? 
Recent Discoveries and Theories About the Existence of Life on Other Planets" 
Dr. Monica Gray, Director, Meteor Section of Museum of Natural History, London, UK 
(Supported by the British Council, The Hellenic Astronomical Society, The National Committee for Astronomy and the Section of Astrophysics, Astronomy and Mechanics) 
At the "Society for Macedonian Studies", Ethn. Aminis 4

WEDNESDAY, 22/11/00, 12:30 
"Meteors: Messengers From the Past" 
Dr. Monica Gray, Director, Meteor Section of Museum of Natural History, London, UK 
(Department Seminar) 
At room A31, Physics Building

By Prof. Rudolf Dvorak, University of Wien, Austria

1. Basics of the 2-body Problem, Tuesday 18/4, 12:00-14:00, 
(Physics Building, Mechanics Lecture room)

2. The restricted 3-body Problem, Wednesday 19/4, 12:00-14:00, 
(Physics Building, Mechanics Lecture room)

3. Perturbation Theory 1: Development of the perturbing function 
Thursday 20/4, 12:00-14:00, ("Vassilis Xanthopoulos" Lecture Room, Observatory of 

4. Perturbation Theory 2: Small Divisors 
Friday 21/4, 10:00-12:00, ("Vassilis Xanthopoulos" Lecture Room, Observatory of