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Electromagnetic radiation accompanying gravitational waves from black hole binaries
Journal of Cosmology and Astroparticle Physics. 2017. Vol. 09. No. 018.
Долгов А. Д., Postnov K.
The transition of powerful gravitational waves, created by the coalescence of massive black hole binaries, into electromagnetic radiation in external magnetic fields is considered. In contrast to the previous calculations of the similar effect we study the realistic case of the gravitational radiation frequency below the plasma frequency of the surrounding medium. The gravitational waves propagating in the plasma constantly create electromagnetic radiation dragging it with them, despite the low frequency. The plasma heating by the unattenuated electromagnetic wave may be significant in hot rarefied plasma with strong magnetic field and can lead to a noticeable burst of electromagnetic radiation with higher frequency. The graviton-to-photon conversion effect in plasma is discussed in the context of possible electromagnetic counterparts of GW150914 and GW170104.
Dmitriev A., Kornilov V., Batienkov R., Lecture Notes in Civil Engineering 2026 Vol. 886 P. 249–255
Numerous studies have provided compelling evidence that the probability distribution of avalanche sizes follows a power law, and that 1/f noise is present in the stochastic dynamics of landslides. We present a theoretical explanation of these phenomena within the framework of self-organized criticality theory, proposing a discrete-time model in the form of a sandpile cellular ...
Added: October 13, 2026
Dmitriev A., Shulman I., Lebedev A., Studies in Computational Intelligence 2026 Vol. 1265 P. 266–273
A discrete-time model is presented for the self-organization of the X/Twitter social network to the edge of a phase transition, characterized by avalanche-like propagation of information in the network. The model is based on the analogy between the critical dynamics of the X social network and sandpile cellular automata with Manna rule on the Chung-Lu ...
Added: October 13, 2026
Arutyunov K., Kharitonov I. A., Petrosyants K. O., JETP Letters 2026 Vol. 124 No. 6 P. 1–16
Superconducting properties of metallic micro- and nanowires can be entirely different from those of bulk superconductors. Of particular interest is the nonequilibrium current-induced state of a quasi-one-dimensional superconducting channel. The most interesting phenomenon here is the stepped I–V characteristic, explained by a process known as phase slip center activation. If the origin of such step-like ...
Added: October 13, 2026
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
Махлуф М., Ozhegov R., Elezov M. et al., Фотоника 2026 Vol. 20 No. 6 P. 414–423
This paper compares the ranging precision of direct time-of-flight (dToF) and non-line-of-sight (NLOS) LiDAR architectures, both using a superconducting nanowire single-photon detector (SNSPD). Both systems operate at 1550 nm with a 50 ps pulsed laser and time-correlated single-photon counting (TCSPC). The dToF configuration achieved approximately 100 µm precision at 10 m, while the NLOS configuration achieved 500 µm precision for ...
Added: October 12, 2026
Singapore: Springer, 2026.
This volume presents the Proceedings of the 34th IUPAP Conference on Computational Physics (CCP2023), held in Kobe, Japan on August 4–8, 2023. It offers a collection of peer-reviewed articles that highlight recent developments in computational and simulation research across various areas of physics. Key topics include the use of data science, quantum computing, and machine ...
Added: October 12, 2026
Goncharov A., Chibisov A., Advanced Theory and Simulations 2023 Vol. 12 No. 13 Article 2200816
Designing stable quantum computers with the ability to correct errors responsibly requires a detailed understanding of the physical processes that underlie these devices. In this study, detailed quantum mechanical simulations of the atomic structure, charge distribution of electron density, and distribution and orientation of magnetic and quantum states as a function of applied external pressure ...
Added: October 11, 2026
Chibisov A., Gnidenko A., Chibisova M. et al., FlatChem 2023 Vol. 41 Article 100533
Manufacturing precise quantum computers with small errors in quantum operations, long coherence times, and low power consumption is the most important challenge in modern nanoelectronics. To understand the operating modes of such calculators in detail, both the optimal arrangement of the qubit system within the structure and changes in its magnetic properties must be comprehensively ...
Added: October 11, 2026
Park I. H., Choi K. -., Hwang J. et al., Journal of Cosmology and Astroparticle Physics 2021 Vol. 2021 No. 11 Article 008
We propose a new method to detect gravitational waves, based on spatial coherence interferometry with stellar light, as opposed to the conventional temporal coherence interferometry with laser sources. The proposed method detects gravitational waves by using two coherent beams of light from a single distant star measured at separate space-based detectors with a long baseline. ...
Added: January 14, 2022
Sazonov S., Kulkarni S., Monthly Notices of the Royal Astronomical Society 2021 Vol. 508 No. 3 P. 3820–3847
We present the first sample of tidal disruption events (TDEs) discovered during the SRG all-sky survey. These 13 events were selected among X-ray transients detected in the 0° < l < 180° hemisphere by eROSITA during its second sky survey (2020 June 10 to December 14) and confirmed by optical follow-up observations. The most distant ...
Added: October 27, 2021
Sazonov S., New Astronomy Reviews 2020 Vol. 88 P. 101536
Seventeen years of hard X-ray observations with the instruments of the INTEGRAL observatory, with a focus on the Milky Way and in particular on the Galactic Centre region, have provided a unique database for exploration of the Galactic population of low-mass X-ray binaries (LMXBs). Our understanding of the diverse energetic phenomena associated with accretion of ...
Added: November 16, 2020
Sazonov S., Monthly Notices of the Royal Astronomical Society 2019 Vol. 489 No. 1 P. 1127–1138
There is a hope that looking into the early Universe with next-generation telescopes, one will be able to observe the early accretion growth of supermassive black holes (BHs) when their masses were ∼104-106 M☉. According to the standard accretion theory, the bulk of the gravitational potential energy released by radiatively efficient accretion of matter on to ...
Added: August 6, 2020
Losiakov V., Тютин И. В., Теоретическая и математическая физика 2019 Т. 199 № 1 С. 142–153
In the framework of general relativity theory, we consider a space-time whose metric depends on only one coordinate and time. We choose a gauge class such that all the constraint conditions of the theory of gravity as a gauge theory are explicitly solved and construct a Hamiltonian depending only on dynamical physical variables (gravitons). We ...
Added: October 31, 2019
Slunyaev A., , in: Proceedings of the International Conference DAYS on DIFFRACTION 2018.: IEEE, 2018. P. 277–282.
We develop a method for the application of the Inverse Scattering Technique to the analysis of surface
water waves and present here some evidence on its efficiency. The general idea is to interpret nonlinear
wave groups in terms of soliton-type structures - envelope solitons in the framework of the integrable
nonlinear Schrodinger equation. Such analysis can improve understanding of the nonlinear ...
Added: March 1, 2019
Slunyaev A., Ezersky A., Mouazé D. et al., , in: Nonlinear Waves and Pattern Dynamics.: Switzerland: Springer, 2018. P. 67–76.
Arisingmodulations of surface gravitywaves in a shallow-water resonator under harmonic forcing is discovered in laboratory experiments. Different types of modulations are found. When certain conditions are satisfied (appropriate frequency and sufficient force of excitation), the standing waves become modulated, and the envelopes of standing waves propagate in the channel. Strongly nonlinear numerical simulations of the Euler equations are performed reproducing ...
Added: March 1, 2019
Oknyansky V., Malanchev Konstantin L., Gaskell C. M., , in: Revisiting narrow-line Seyfert 1 galaxies and their place in the Universe (NLS1-2018), 9-13 April 2018, Padova Botanical Garden, ItalyIssue 328: Proceedings of Science.: Trieste: Scuola Internazionale Superiore di Studi Avanzati (SISSA), 2018. Ch. 12 P. 1–6.
Two major challenges to unification schemes for active galactic nuclei (AGN) activity are the existence of Narrow-Line Seyfert 1s (NLS1s) and the existence of changing-look (CL) AGNs. AGNs can drastically change their spectral appearance in the optical (changing their Seyfert type) and/or in the X-ray region. We illustrate the CL phenomenon with our multi-wavelength monitoring ...
Added: October 26, 2018
Pozanenko A. S., Barkov M. V., Minaev P. Y. et al., Astrophysical Journal Letters 2018 Vol. 852 No. 2 P. 1–18
We present our observations of electromagnetic transients associated with GW170817/GRB 170817A using optical telescopes of Chilescope observatory and Big Scanning Antenna (BSA) of Pushchino Radio Astronomy Observatory at 110 MHz. The Chilescope observatory detected an optical transient of ∼19m on the third day in the outskirts of the galaxy NGC 4993; we continued observations following ...
Added: January 29, 2018
Abbott B. P., Abbott R., Abbott T. D. et al., Astrophysical Journal Letters 2017 Vol. 848 No. 2 P. 1–59
On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ∼ 1.7 {{s}} with respect to the ...
Added: January 27, 2018
Lipunova G. V., Malanchev K. L., Monthly Notices of the Royal Astronomical Society 2017 Vol. 468 No. 4 P. 4735–4747
We investigate the viscous evolution of the accretion disc in 4U 1543-47, a black hole binary system, during the first 30 d after the peak of the 2002 burst by comparing the observed and theoretical accretion rate evolution \dot{M}(t). The observed \dot{M}(t) is obtained from spectral modelling of the archival Proportional Counter Array aboard the ...
Added: October 30, 2017
Шакура Н. И., Postnov K., Липунова Г. В. et al., М.: Физматлит, 2016.
Предлагаемая читателю книга содержит наиболее важные и принципиальные разделы современной теории дисковой и квази-сферической аккреции на черные дыры и замагниченные нейтронные звезды. Последовательно излагается расчет структуры стандартной модели стационарной дисковой аккреции (альфа-модель). Показано, как из сравнения теории нестационарной дисковой аккреции с данными наблюдений нестационарных рентгеновских источников получаются оценки основных параметров модели. Излагается методика расчета релятивистских ...
Added: October 25, 2017
Siparov S., Samodurov V., Laptev G., Monthly Notices of the Royal Astronomical Society 2017 Vol. 467 No. 3 P. 2813–2819
Further analysis of data previously obtained during the monitoring observations of 49 astrophysical water (22 GHz) masers shows that in some cases the intensity of an individual component of the maser spectrum changes periodically, on time-scales of tens of minutes. It is argued that this variation cannot be the effect of instrumental errors, weather conditions ...
Added: August 30, 2017
Pozanenko A. S., Вольнова А. А., Minaev P. et al., В кн.: CEUR Workshop Proceedings (Т. 1752, Selected Papers of the XVIII International Conference on Data Analytics and Management in Data Intensive Domains (DAMDID/RCDL 2016) Ershovo, Moscow Region, Russia, October 11-14, 2016)Т. 1752.: Ахен: CEUR-WS.org, 2016. С. 116–120.
We consider various signals, which may accompany transient sources of gravitational waves. Also we discuss problems of a counterpart search of gravitational transients. We briefly describe data sets and data types generating in search campaigns. We also formulate requirements for the search. As an example we consider the first gravitational wave events GW150914, GW151226 and ...
Added: March 13, 2017
Abrashkin A. A., В кн.: Труды X Всероссийской научной конференции «Нелинейные колебания механических систем» (Нижний Новгород, 26–29 сентября 2016 г.).: Н. Новгород: ИД "Наш дом", 2016. С. 7–11.
Предложена модель гипотетического первичного вакуума как континуума, состоящего из частиц с планковскими масштабами длины, времени и массы (эфиронов). Они образуют бозе-конденсат, и их описание сводится к системе уравнений гидродинамики для потенциальных течений сжимаемой жидкости. Уравнение состояния такого планковского конденсата содержит постоянную Планка и является нелокальным. Показано, что в конденсате могут распространяться продольные колебания плотности эфиронов, ...
Added: November 17, 2016
Abrashkin A. A., Pelinovsky E., , in: EGU General Assembly 2016, Geophysical Research Abstracts.: Wien: CC Attribution 3.0 License, 2016.
Nonlinear Schrodinger equation is derived for weakly modulated nonlinear wave packets in the infinite-depth water flow with inhomogeneous vorticity. Governing 2-D equations are written in Lagrangian variables. Nonlinear Schrodinger equation is obtained in the third order of perturbation theory taking into account weak non-uniform vortex current. Two limiting cases are analyzed. The first one corresponds ...
Added: September 27, 2016