Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Krolak, Andrzej"'
Autor:
Królak, Andrzej, Jaranowski, Piotr, Bejger, Michał, Ciecieląg, Paweł, Dorosh, Orest, Pisarski, Andrzej
Publikováno v:
Class. Quantum Grav. 40, 215008 (2023)
In this paper, we present a new method to search for a short, a few tens of milliseconds long, postmerger gravitational-wave signal following the merger of two neutron stars. Such a signal could follow the event GW170817 observed by LIGO and Virgo de
Externí odkaz:
http://arxiv.org/abs/2304.08171
Publikováno v:
Classical and Quantum Gravity, Published 18 October 2019, Volume 36, Number 22
Among promising sources of gravitational waves are long-lived nearly periodic signals produced by rotating, asymmetric neutron stars. Depending on the astrophysical scenario, the sources of asymmetry may have thermal, viscous, elastic and/or magnetic
Externí odkaz:
http://arxiv.org/abs/1905.13488
Publikováno v:
Proceedings of the Polish Astronomical Society, vol. 7, 37-40 (2018)
Potentially interesting gravitational-wave candidates (outliers) from the blind all-sky searches have to be confirmed or rejected by studying their origin and precisely estimating their parameters. We present the design and first results for the foll
Externí odkaz:
http://arxiv.org/abs/1810.02224
Autor:
Królak, Andrzej, Patil, Mandar
Publikováno v:
Universe, 3(3), 59 (2017)
This article deals with the first detection of gravitational waves by the advanced Laser Interferometer Gravitational Wave Observatory (LIGO) detectors on 14 September 2015, where the signal was generated by two stellar mass black holes with masses 3
Externí odkaz:
http://arxiv.org/abs/1708.00918
Autor:
Nakao, Ken-ichi, Joshi, Pankaj S., Guo, Jun-Qi, Kocherlakota, Prashant, Tagoshi, Hideyuki, Harada, Tomohiro, Patil, Mandar, Krolak, Andrzej
The superspinar proposed by Gimon and Horava is a rapidly rotating compact entity whose exterior is described by the over-spinning Kerr geometry. The compact entity itself is expected to be governed by superstringy effects, and in astrophysical scena
Externí odkaz:
http://arxiv.org/abs/1707.07242
Autor:
Chakraborty, Chandrachur, Kocherlakota, Prashant, Patil, Mandar, Bhattacharyya, Sudip, Joshi, Pankaj S., Królak, Andrzej
Publikováno v:
Phys. Rev. D 95, 084024 (2017)
We study here the precession of the spin of a test gyroscope attached to a stationary observer in the Kerr spacetime, specifically, to distinguish naked singularity (NS) from black hole (BH). It was shown recently that for gyros attached to static ob
Externí odkaz:
http://arxiv.org/abs/1611.08808
Autor:
Walsh, Sinead, Pitkin, Matthew, Oliver, Miquel, D'Antonio, Sabrina, Dergachev, Vladimir, Krolak, Andrzej, Astone, Pia, Bejger, Michal, Di Giovanni, Matteo, Dorosh, Orest, Frasca, Sergio, Leaci, Paola, Mastrogiovanni, Simone, Miller, Andrew, Palomba, Cristiano, Papa, Maria Alessandra, Piccinni, Ornella J., Riles, Keith, Sauter, Orion, Sintes, Alicia M.
Publikováno v:
Phys. Rev. D 94, 124010 (2016)
Rapidly rotating neutron stars are promising sources of continuous gravitational wave radiation for the LIGO and Virgo interferometers. The majority of neutron stars in our galaxy have not been identified with electromagnetic observations. All-sky se
Externí odkaz:
http://arxiv.org/abs/1606.00660
Publikováno v:
Computer Physics Communications volume 188 pages 168 - 176 (2015)
The parallelization, design and scalability of the \sky code to search for periodic gravitational waves from rotating neutron stars is discussed. The code is based on an efficient implementation of the F-statistic using the Fast Fourier Transform alg
Externí odkaz:
http://arxiv.org/abs/1410.3677
Autor:
Jaranowski, Piotr, Królak, Andrzej
In searches for gravitational waves emitted by known isolated pulsars in data collected by a detector one can assume that the frequency of the wave, its spindown parameters, and the position of the source in the sky are known, so the almost monochrom
Externí odkaz:
http://arxiv.org/abs/1004.0324
Publikováno v:
Phys.Rev.D82:022005,2010
We present theory and algorithms to perform an all-sky coherent search for periodic signals of gravitational waves in narrow-band data of a detector. Our search is based on a statistic, commonly called the $\mathcal{F}$-statistic, derived from the ma
Externí odkaz:
http://arxiv.org/abs/1003.0844