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Christos Tsagkas
Associate Professor, School of Physics
Personal Information
2310999891
ctsagas@auth.gr
http://www.astro.auth.gr/~tsagas/
Scopus ID
C.G. Tsagas
Google Scholar ID
Christos Tsagas
Γνωστικό Αντικείμενο
:
Αστροφυσική και Θεωρία Σχετικότητας
Επιστημονική Ειδίκευση
:
Φυσική
Μαθηματικά
Education
Προπτυχιακές Σπουδές
1986
Πτυχίο
Μαθηματικών/Θετικών Επιστημών
ΑΠΘ
Greece
Μεταπτυχιακές Σπουδές
1992
MSc
Physics
Sussex
Great Britain
Astronomy
Διδακτορικό Δίπλωμα
1998
PhD
Physics
Sussex
Great Britain
Cosmology
Course Work
Courses of Winter semester of 2016–17 academic year
TMĪMA FYSIKĪS
ΑΑ0212
Astrophysics
ΑΑΕ201
Astrophysics
ΜΑ0201
Calculus I
ΜΑΥ201
Mathematics I
METAPTYCΗIAKO PROGRAMMA SPOUDŌN YPOATOMIKĪ FYSIKĪ KAI TECΗNOLOGIKES EFARMOGES
SPE-C5
Courses of Spring semester of 2016–17 academic year
TMĪMA FYSIKĪS
ΑΑ0113
Cosmology
ΑΑΕ102
Cosmology
ΓΘ0271
General Theory of Relativity
ΓΘΕ210
General Theory of Relativity
ΜΑ0202
Calculus II
ΜΑΥ203
Mathematics II
Theses Supervised
Student Theses within AUTh
In progress
. "Δομή μεγάλης κλίμακας στο σύμπαν"
. "Σχετικιστικά Κοσμολογικά Μοντέλα"
. "Κοσμολογικές δομές μεγάλης κλίμακας-Κοσμολογικές διαταραχές και συνθήκες σύνδεσης"
2013–2014
. "Εξέλιξη και δράση ηλεκτρομαγνητικών πεδίων σε καμπύλους χώρους"
. Βαρυτικά κύματα στο επίπεδο και το ανοιχτό κοσμολογικό μοντέλο FLRW
2011–2012
. "Κοσμολογικές διαταραχές σε μη-ιδανικά ρευστά"
Administrative Work
Τμήματος
#
Από
Έως
Θέση Όργανο / Επιτροπή
1
2014
2015
Director, Τομέας ΑΑ&Μ
Work Acknowledgement
Αναφορές στα ΜΜΕ
2011-09-27
Wolchover Natalie
'Accelerating universe' could be just an illusion
.
NBC News.com
.
2001-06-22
Seife Charles
Math Trick May Cause Tension Headache
.
Science
.
2230
.
2001-06-12
Ball Philip
Stiff challenge to spacetime
.
Nature Online
.
2001-06-12
Magnete rücken die Raumzeit gerade
.
Spiegel Online
.
Publications
2015
Tsagkas Christos
,
Kadiltzoglou Miltiadis I
(2015)
.
Deceleration parameter in tilted Friedmann universes
.
Physical Review D
.
vol.92 no.4
.
2013
Kouretsis Alexandros P
,
Tsagkas Christos
(2013)
.
Gravito-electromagnetic resonances in Minkowski space
.
Physical Review D
.
vol.88 no.4
.
Tsagkas Christos
,
Kadiltzoglou Miltiadis I
(2013)
.
Peculiar Raychaudhuri equation
.
Physical Review D
.
vol.88 no.8
.
2012
Barrow J. D
,
Tsagas C. G
,
Yamamoto K
(2012)
.
Origin of cosmic magnetic fields: Superadiabatically amplified modes in open Friedmann universes
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.86 no.2
.
Barrow J. D
,
Tsagas C. G
,
Yamamoto K
(2012)
.
Do intergalactic magnetic fields imply an open universe?
.
Physical Review D
.
vol.86 no.10
.
Dosopoulou F
,
Del Sordo F
,
Tsagas C. G
,
Brandenburg A
(2012)
.
Vorticity production and survival in viscous and magnetized cosmologies
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.85 no.6
.
Ryu D
,
Schleicher D. R. G
,
Treumann R. A
,
Tsagas C. G
,
Widrow L. M
(2012)
.
Magnetic fields in the large-scale structure of the universe
.
Space Science Reviews
.
vol.166 no.1-4 p.1-35
.
Tsagas C. G
(2012)
.
Dark flows and the cosmological axis
.
Monthly Notices of the Royal Astronomical Society
.
vol.426 no.1 p.L36-L40
.
Tsagas C. G
(2012)
.
ACCELERATED DARK FLOWS AND THE COSMOLOGICAL AXIS
.
International Journal of Modern Physics D
.
vol.21 no.11
.
Widrow L. M
,
Ryu D
,
Schleicher D. R. G
,
Subramanian K
,
Tsagas C. G
,
Treumann R. A
(2012)
.
The first magnetic fields
.
Space Science Reviews
.
vol.166 no.1-4 p.37-70
.
2011
Barrow J. D
,
Tsagas C. G
(2011)
.
Cosmological magnetic field survival
.
Monthly Notices of the Royal Astronomical Society
.
vol.414 no.1 p.512-518
.
Kandus A
,
Kunze K. E
,
Tsagas C. G
(2011)
.
Primordial magnetogenesis
.
Physics Reports
.
vol.505 no.1 p.1-58
.
Tsagas C. G
(2011)
.
Peculiar motions, accelerated expansion, and the cosmological axis
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.84 no.6
.
Tsagas C. G
(2011)
.
Gravitoelectromagnetic resonances
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.84 no.4
.
Tsagas C. G
(2011)
.
Apparent cosmic acceleration due to large-scale peculiar motions
.
Journal of Physics: Conference Series
.
vol.283 no.1
.
2010
Kouretsis A. P
,
Tsagas C. G
(2010)
.
Raychaudhuri's equation and aspects of relativistic charged collapse
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.82 no.12
.
Spyrou N. K
,
Tsagas C. G
(2010)
.
Magnetohydrodynamic flows as Newtonian-type gravitational motions
.
Central European Journal of Physics
.
vol.8 no.6 p.989-994
.
Tsagas C. G
(2010)
.
Large-scale peculiar motions and cosmic acceleration
.
Monthly Notices of the Royal Astronomical Society
.
vol.405 no.1 p.503-508
.
Tsagas C. G
(2010)
.
Gravitomagnetic amplification in cosmology
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.81 no.4
.
2009
Barrow J. D
,
Tsagas C. G
(2009)
.
On the stability of static ghost cosmologies
.
Classical and Quantum Gravity
.
vol.26 no.19
.
Tsagas C. G
(2009)
.
Large-scale magnetic fields in cosmology
.
Plasma Physics and Controlled Fusion
.
vol.51 no.12
.
Stergioulas Nikolaos
,
Tsagkas Christos
(2009)
.
Preface: Recent Developments in Gravity (NEB XIII)
.
(2009) Journal of Physics: Conference Series, 189, pp. 011001
.
2008
Barrow J. D
,
Tsagas C. G
(2008)
.
Slow decay of magnetic fields in open Friedmann universes
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.77 no.10
.
Barrow J. D
,
Tsagas C. G
(2008)
.
Publisher's Note: Slow decay of magnetic fields in open Friedmann universes (Physical Review D - Particles, Fields, Gravitation and Cosmology (2008) 77, (107302))
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.77 no.10
.
Kandus A
,
Tsagas C. G
(2008)
.
Generalized Ohm's law for relativistic plasmas
.
Monthly Notices of the Royal Astronomical Society
.
vol.385 no.2 p.883-892
.
Spyrou N. K
,
Tsagas C. G
(2008)
.
Newtonian non-linear hydrodynamics and magnetohydrodynamics
.
Monthly Notices of the Royal Astronomical Society
.
vol.388 no.1 p.187-196
.
Tsagas C. G
,
Challinor A
,
Maartens R
(2008)
.
Relativistic cosmology and large-scale structure
.
Physics Reports
.
vol.465 no.2-3 p.61-147
.
2007
Barrow J. D
,
Tsagas C. G
(2007)
.
Averaging anisotropic cosmologies
.
Classical and Quantum Gravity
.
vol.24 no.4 p.1023-1031
.
Barrow J. D
,
Maartens R
,
Tsagas C. G
(2007)
.
Cosmology with inhomogeneous magnetic fields
.
Physics Reports
.
vol.449 no.6 p.131-171
.
Tsagas C. G
(2007)
.
Magnetic fields in conformally flat spacetimes
.
Journal of Physics: Conference Series
.
vol.68 no.1
.
Tsagas C. G
(2007)
.
Comment on "Primordial magnetic seed field amplification by gravitational waves"
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.75 no.8
.
2006
Barrow J. D
,
Shaw D. J
,
Tsagas C. G
(2006)
.
Cosmology in three dimensions: Steps towards the general solution
.
Classical and Quantum Gravity
.
vol.23 no.17 p.5291-5321
.
Germani C
,
Tsagas C. G
(2006)
.
Magnetized Tolman-Bondi collapse
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.73 no.6 p.1-5
.
Tsagas C. G
(2006)
.
Magnetic tension and gravitational collapse
.
Classical and Quantum Gravity
.
vol.23 no.13 p.4323-4331
.
2005
Barrow J. D
,
Tsagas C. G
(2005)
.
Structure and stability of the Lukash plane-wave spacetime
.
Classical and Quantum Gravity
.
vol.22 no.5 p.825-839
.
Barrow J. D
,
Tsagas C. G
(2005)
.
New isotropic and anisotropic sudden singularities
.
Classical and Quantum Gravity
.
vol.22 no.9 p.1563-1571
.
Tsagas C. G
,
Kandus A
(2005)
.
Superadiabatic-type magnetic amplification in conventional cosmology
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.71 no.12
.
Tsagas C. G
,
Kandus A
(2005)
.
Geometrical generation of cosmic magnetic fields within standard electromagnetism
.
Brazilian Journal of Physics
.
vol.35 no.4 B p.1070-1071
.
Tsagas C. G
(2005)
.
Resonant amplification of magnetic seed fields by gravitational waves in the early universe
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.72 no.12 p.1-10
.
Tsagas C. G
(2005)
.
Electromagnetic fields in curved spacetimes
.
Classical and Quantum Gravity
.
vol.22 no.2 p.393-407
.
Vlachos Loukas
,
Tsagkas Christos
,
Papadopoulos Dimitrios
(2005)
.
Galaxy formation and cosmic-ray acceleration in a magnetized universe
.
Astrophysical Journal Letters
.
vol.629 no.1 II p.L9-L12
.
2004
Barrow J. D
,
Tsagas C. G
(2004)
.
Gödel brane
.
Physical Review D
.
vol.69 no.6
.
Barrow J. D
,
Tsagas C. G
(2004)
.
Dynamics and stability of the Gödel universe
.
Classical and Quantum Gravity
.
vol.21 no.7 p.1773-1789
.
Ellis G. F. R
,
Murugan J
,
Tsagas C. G
(2004)
.
The emergent universe: An explicit construction
.
Classical and Quantum Gravity
.
vol.21 no.1 p.233-249
.
Spyrou N. K
,
Tsagas C. G
(2004)
.
Covariant approach to the conformal dynamical equivalence in astrophysics
.
Classical and Quantum Gravity
.
vol.21 no.9 p.2435-2444
.
2003
Barrow J. D
,
Ellis G. F. R
,
Maartens R
,
Tsagas C. G
(2003)
.
On the stability of the Einstein static universe
.
Classical and Quantum Gravity
.
vol.20 no.11 p.L155-L164
.
Bruni M
,
Maartens R
,
Tsagas C. G
(2003)
.
Magnetic field amplification in cold dark matter anisotropic collapse
.
Monthly Notices of the Royal Astronomical Society
.
vol.338 no.3 p.785-789
.
Clarkson C. A
,
Coley A. A
,
Maartens R
,
Tsagas C. G
(2003)
.
CMB limits on large-scale magnetic fields in an inhomogeneous universe
.
Classical and Quantum Gravity
.
vol.20 no.8 p.1519-1528
.
Marklund M
,
Dunsby P. K. S
,
Betschart G
,
Servin M
,
Tsagas C. G
(2003)
.
Charged multifluids in general relativity
.
Classical and Quantum Gravity
.
vol.20 no.9 p.1823-1834
.
Tsagas C. G
,
Dunsby P. K. S
,
Marklund M
(2003)
.
Gravitational wave amplification of seed magnetic fields
.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
.
vol.561 no.1-2 p.17-25
.
2002
Ellis G. F. R
,
Tsagas C. G
(2002)
.
Relativistic approach to nonlinear peculiar velocities and the Zeldovich approximation
.
Physical Review D
.
vol.66 no.12
.
Tsagas C. G
(2002)
.
Gravitational waves and cosmic magnetism: A cosmological approach
.
Classical and Quantum Gravity
.
vol.19 no.14 p.3709-3722
.
2001
Maartens R
,
Tsagas C. G
,
Ungarelli C
(2001)
.
Magnetized gravitational waves
.
Physical Review D
.
vol.63 no.12
.
Tsagkas Christos
(2001)
.
Magnetic Tension and the Geometry of the Universe
.
Physical Review Letters
.
Published Version
.
vol. 86 no. 24 p.5421-5424
.
2000
Matravers D. R
,
Tsagas C. G
(2000)
.
Cosmic magnetism, curvature, and the expansion dynamics
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.62 no.10 p.1-7
.
Tsagas C. G
,
Maartens R
(2000)
.
Magnetized cosmological perturbations
.
Physical Review D - Particles, Fields, Gravitation and Cosmology
.
vol.61 no.8 p.1-15
.
Tsagas C. G
,
Maartens R
(2000)
.
Cosmological perturbations on a magnetized Bianchi I background
.
Classical and Quantum Gravity
.
vol.17 no.11 p.2215-2241
.
1998
Tsagas C. G
,
Barrow J. D
(1998)
.
Gauge-invariant magnetic perturbations in perfect-fluid cosmologies
.
Classical and Quantum Gravity
.
vol.15 no.11 p.3523-3544
.
1997
Tsagas C. G
,
Barrow J. D
(1997)
.
A gauge-invariant analysis of magnetic fields in general-relativistic cosmology
.
Classical and Quantum Gravity
.
vol.14 no.9 p.2539-2562
.
Aggiornato: 2017-07-29