95 citations · 581 across the 27 of their papers we have counts for
27 papers
Hybrid Stars with a Crossover Equation of State
G. A. Tsalis, Ch. C. Moustakidis
The possible occurrence of a phase transition in superdense nuclear matter remains an open problem in nuclear physics. In particular, the transition from purely hadronic matter to…
Hadron-quark phase transitions along proto-neutron-star evolution
P. Laskos-Patkos, P. S. Koliogiannis, Ch. C. Moustakidis
The new era of multi-messenger astronomy requires the accurate and self-consistent derivation of the nuclear equation of state at high temperature. In the present work, we focused…
Binding energy of compact stars and their non-radial oscillations
P. Laskos-Patkos, S. Papadopoulos, Ch. C. Moustakidis
In the past years, a significant effort has been made with the scope of determining correlations, involving compact star properties, that are independent of the nuclear equation of…
Confronting recent light compact star observations with color-flavor locked quark matter
K. Kourmpetis, P. Laskos-Patkos, Ch. C. Moustakidis
Recent analyses on the properties of the central compact object in the HESS J1731-347 remnant and the PSR J1231-1411 pulsar indicated that these two compact objects are characteriz…
Statistical complexity as a probe of mass and phase structure in compact objects
Ch. D. Giannios, P. S. Koliogiannis, Ch. C. Moustakidis
In this work, we present a comprehensive and systematic study of the statistical complexity, originally introduced by López-Ruiz, Mancini, and Calbet [Phys. Lett. A 209, 321-326 (1…
Constraints on color-flavor locked quark matter in view of the HESS J1731-347 measurement
K. Kourmpetis, P. Laskos-Patkos, Ch. C. Moustakidis
Astrophysical observations play a crucial role in understanding the processes within compact stars. A recent study measured the central object in the HESS J1731-347 supernova remna…
XTE J1814-338: A potential hybrid star candidate
P. Laskos-Patkos, Ch. C. Moustakidis
A recent analysis on the properties of the XTE J1814-338 pulsar yielded a small radius value around ~ 7 km. Notably, this estimation is significantly lower compared to the currentl…
Speed of sound bounds and first-order phase transitions in compact stars
P. Laskos-Patkos, G. A. Lalazissis, Sibo Wang +3
In the present study, we employ three distinct, physically motivated speed of sound bounds to construct hybrid models, where the high-density phase is described by the maximally st…
Constraints on the isovector properties of finite nuclei from neutron stars observations
M. Divaris, A. Kanakis-Pegios, Ch. C. Moustakidis
The nuclear symmetry energy plays important role on the structure of finite nuclei as well as on the bulk properties of neutron stars. However, its values at high densities are com…
Hybrid stars in light of the HESS J1731-347 remnant and the PREX-II experiment
P. Laskos-Patkos, P. S. Koliogiannis, Ch. C. Moustakidis
The recent analysis on the central compact object in the HESS J1731-347 remnant suggests interestingly small values for its mass and radius. Such an observation favors soft nuclear…
Signatures of quark deconfinement through the r-modes of twin stars
P. Laskos-Patkos, Ch. C. Moustakidis
The observation and distinction of two compact stars with an identical mass but a different radius would be a clear sign of hadron-quark phase transition in nuclear matter. Motivat…
Twin stars as probes of the nuclear equation of state: effects of rotation through the PSR J0952-0607 pulsar and constraints via the tidal deformability from the GW170817 event
Lazaros Tsaloukidis, P. S. Koliogiannis, A. Kanakis-Pegios +1
In agreement with the constantly increasing gravitational wave events, new aspects of the internal structure of compact stars can be considered. A scenario in which a first order t…
Configurational entropy as a probe of the stability condition of compact objects
P. S. Koliogiannis, G. A. Tsalis, C. P. Panos +1
We systematically extend the statement that the configurational entropy provides an alternative approach to studying gravitational stability of compact objects, carried out in the…
Thermal effects on tidal deformability in the last orbits of an inspiraling binary neutron star system
A. Kanakis-Pegios, P. S. Koliogiannis, Ch. C. Moustakidis
The study of binary neutron stars mergers by the detection of the emitted gravitational waves is one of the most promised tools to study the properties of dense nuclear matter at h…
Neutron Stars and Gravitational Waves: the Key Role of Nuclear Equation of State
P. S. Koliogiannis, A. Kanakis-Pegios, Ch. C. Moustakidis
Neutron stars are the densest known objects in the universe and an ideal laboratory for the strange physics of super-condensed matter. Theoretical studies in connection with recent…
Thermal effects on tidal deformability of a coalescing binary neutron star system
A. Kanakis-Pegios, P. S. Koliogiannis, Ch. C. Moustakidis
The study of neutron star mergers by the detection of the emitted gravitational waves is one of the most promised tools to study the properties of dense nuclear matter at high dens…
Speed of sound constraints from tidal deformability of neutron stars
A. Kanakis-Pegios, P. S. Koliogiannis, Ch. C. Moustakidis
The upper bound of the speed of sound in dense nuclear matter is one of the most interesting but still unsolved problems in Nuclear Physics. Theoretical studies in connection with…
Thermodynamical Description of Hot, Rapidly Rotating Neutron Stars, Protoneutron Stars, and Neutron Star Merger Remnants
P. S. Koliogiannis, Ch. C. Moustakidis
The prediction of the equation of state of hot, dense nuclear matter is one of the most complicated and interesting problems in nuclear astrophysics. At the same time, knowledge of…
Speed of sound constraints on maximally rotating neutron stars
Ch. Margaritis, P. S. Koliogiannis, Ch. C. Moustakidis
The observation of maximally rotating neutron stars (in comparison to nonrotating ones) may provide more information on the behavior of nuclear matter at high densities. We provide…
Effects of the equation of state on the bulk properties of maximally-rotating neutron stars
P. S. Koliogiannis, Ch. C. Moustakidis
Neutron stars are among the densest known objects in the universe and an ideal laboratory for the strange physics of super-condensed matter. While the simultaneously measurements o…
Constraints on the equation of state from the stability condition of neutron stars
P. S. Koliogiannis, Ch. C. Moustakidis
The stellar equilibrium and collapse, including mainly white dwarfs, neutron stars and supper massive stars, is an interplay between general relativistic effects and the equation o…
Freeness of spherical Hecke modules of unramified in characteristic
Peng Xu
Let be a non-archimedean local field of odd residue characteristic . Let be the unramified unitary group in three variables, and be a maximal compact…
Direct dark matter detection: The diurnal variation in directional experiments
J. D. Vergados, Ch. C. Moustakidis
We present some theoretical results relevant to the direct dark matter detection experiments, paying particular attention to directional experiments, i.e. experiments in which, not…
The Diurnal Variation of the Wimp Detection Event Rates in Directional Experiments
J. D. Vergados, Ch. C. Moustakidis
The recent WMAP data have confirmed that exotic dark matter together with the vacuum energy (cosmological constant) dominate in the flat Universe. Modern particle theories naturall…