Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Kostas Glampedakis"'
Autor:
Georgios Pappas, Kostas Glampedakis
Publikováno v:
Physical Review D. 107
Capturing the image of the shadow cast by the event horizon of an illuminated black hole is, at the most basic level, an experiment of extreme light deflection in a strongly curved spacetime. As such, the properties of an imaged shadow can be used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8964223ab9786c2177c5d385fe742fb9
https://doi.org/10.1103/physrevd.107.064001
https://doi.org/10.1103/physrevd.107.064001
Autor:
Arthur G. Suvorov, Kostas Glampedakis
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 508:2399-2411
Accreting millisecond X-ray pulsars are known to provide a wealth of physical information during their successive states of outburst and quiescence. Based on the observed spin-up and spin-down rates of these objects it is possible, among other things
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de3da273320b8d42320d77d8f3c7ed72
https://doi.org/10.1093/mnras/stab2689
https://doi.org/10.1093/mnras/stab2689
Autor:
Arthur G. Suvorov, Kostas Glampedakis
Publikováno v:
Physical Review D. 105
It is commonly believed that neutron stars exceeding the maximum mass limit for stability could be formed in the aftermath of binary neutron star mergers, enjoying a short life of metastability before losing centrifugal support and collapsing to a bl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae841e5301d0c33a157b949286181d67
https://doi.org/10.1103/physrevd.105.l061302
https://doi.org/10.1103/physrevd.105.l061302
Autor:
Kostas Glampedakis
The widely known but also somewhat esoteric Mach principle envisages a fully relational formulation of physical theories without any reference to a concept of `absolute space'. When applied to classical mechanics, under the guise of an extended symme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58dfca9774d3a623da93da0bae86fa77
http://arxiv.org/abs/2202.11561
http://arxiv.org/abs/2202.11561
Autor:
Arthur G. Suvorov, Kostas Glampedakis
The high-mass X-ray binary LS I +61{\deg}303 is also cataloged as a gamma-ray binary as a result of frequent outbursts at TeV photon energies. The system has released two soft-gamma flares in the past, suggesting a magnetar interpretation for the com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ea0cb71a5a8c86337a6426857b16761
Publikováno v:
Physical Review D
In a recent series of papers we have shown how the eikonal/geometrical optics approximation can be used to calculate analytically the fundamental quasinormal mode frequencies associated with coupled systems of wave equations, which arise, for instanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7abf58a4a4ac71f995dae83f61c63b12
Autor:
Kostas Glampedakis, George Pappas
Publikováno v:
Physical Review D
Photon circular orbits, an extreme case of light deflection, are among the hallmarks of black holes and are known to play a central role in a variety of phenomena related to these extreme objects. The very existence of such orbits when motion is not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9317f7be760f53bb98f4b5c22a430981
https://doi.org/10.1103/physrevd.99.124041
https://doi.org/10.1103/physrevd.99.124041
Autor:
Kostas Glampedakis, Hector O. Silva
Black hole `spectroscopy', i.e. the identification of quasinormal mode frequencies via gravitational wave observations, is a powerful technique for testing the general relativistic nature of black holes. In theories of gravity beyond general relativi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e2378fce23de3dae13b3b2683357f8a
Autor:
Kostas Glampedakis, Paul D. Lasky
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 463:2542-2552
Our ability to interpret and glean useful information from the large body of observations of strongly magnetised neutron stars rests largely on our theoretical understanding of magnetic field equilibria. We answer the following question: is one free
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee44929b03c756244c4ae577b931aed0
https://doi.org/10.1093/mnras/stw2115
https://doi.org/10.1093/mnras/stw2115
Autor:
Kostas Glampedakis, Paul D. Lasky
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 458:1660-1670
Observations of short gamma-ray bursts indicate ongoing energy injection following the prompt emission, with the most likely candidate being the birth of a rapidly rotating, highly magnetised neutron star. We utilise X-ray observations of the burst r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3654b992ac52a0366a974bf357f06719
https://doi.org/10.1093/mnras/stw435
https://doi.org/10.1093/mnras/stw435