Search Results - "Veledina, Alexandra"

Interplay of spectral components in timing properties of accreting compact objects by Veledina, Alexandra

“…X-ray variability of accreting black hole binaries is believed to be produced by the fluctuations propagating towards the compact object. Observations suggest…”
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INTERFERENCE AS AN ORIGIN OF THE PEAKED NOISE IN ACCRETING X-RAY BINARIES by Veledina, Alexandra

“…ABSTRACT We propose a physical model for the peaked noise in the X-ray power density spectra of accreting X-ray binaries. We interpret its appearance as an…”
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Accretion geometry of the black hole binary MAXI J1820+070 probed by frequency-resolved spectroscopy by Axelsson, Magnus, Veledina, Alexandra

“…ABSTRACT The geometry of the inner accretion flow in the hard and hard-intermediate states of X-ray binaries remains controversial. Using Neutron star Interior…”
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Polarized X-Rays from Windy Accretion in Cygnus X-1 by Poutanen, Juri, Veledina, Alexandra, Beloborodov, Andrei M.

“…Abstract Recent X-ray polarimetric data on the prototypical black hole X-ray binary Cyg X-1 from the Imaging X-ray Polarimetry Explorer present tight…”
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Hot accretion flow in black hole binaries: a link connecting X-rays to the infrared by Veledina, Alexandra, Poutanen, Juri, Vurm, Indrek

“…Multiwavelength observations of Galactic black hole transients have opened a new path to understanding the physics of the innermost parts of the accretion…”
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Relativistic Collisionless Shocks in Inhomogeneous Magnetized Plasmas by Demidem, Camilia, Nättilä, Joonas, Veledina, Alexandra

“…Abstract Relativistic collisionless shocks are associated with efficient particle acceleration when propagating into weakly magnetized homogeneous media; as…”
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A UNIFIED LENSE-THIRRING PRECESSION MODEL FOR OPTICAL AND X-RAY QUASI-PERIODIC OSCILLATIONS IN BLACK HOLE BINARIES by VELEDINA, ALEXANDRA, Poutanen, Juri, Ingram, Adam

“…Recent observations of accreting black holes reveal the presence of quasi-periodic oscillations (QPO) in the optical power density spectra. The corresponding…”
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Shock Corrugation to the Rescue of the Internal Shock Model in Microquasars: The Single-scale Magnetohydrodynamic View by Pjanka, Patryk, Demidem, Camilia, Veledina, Alexandra

“…Abstract Questions regarding the energy dissipation in astrophysical jets remain open to date, despite numerous attempts to limit the diversity of the models…”
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Black hole spin-orbit misalignment in the x-ray binary MAXI J1820+070 by Poutanen, Juri, Veledina, Alexandra, Berdyugin, Andrei V, Berdyugina, Svetlana V, Jermak, Helen, Jonker, Peter G, Kajava, Jari J E, Kosenkov, Ilia A, Kravtsov, Vadim, Piirola, Vilppu, Shrestha, Manisha, Perez Torres, Manuel A P, Tsygankov, Sergey S

“…The observational signatures of black holes in x-ray binary systems depend on their masses, spins, accretion rate, and the misalignment angle between the black…”
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A self-consistent hybrid Comptonization model for broad-band spectra of accreting supermassive black holes by Veledina, Alexandra, Vurm, Indrek, Poutanen, Juri

“…The nature of the broad-band spectra of supermassive accreting black holes in active galactic nuclei (AGNs) is still unknown. The hard X-ray spectra of…”
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Evidence for a Black Hole Spin–Orbit Misalignment in the X-Ray Binary Cyg X-1 by Zdziarski, Andrzej A., Veledina, Alexandra, Szanecki, Michał, Green, David A., Bright, Joe S., Williams, David R. A.

“…Abstract Recently, the accretion geometry of the black hole X-ray binary Cyg X-1 was probed with the X-ray polarization. The position angle of the…”
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Discovery of correlated optical/X-ray quasi-periodic oscillations in black hole binary SWIFT J1753.5–0127 by Veledina, Alexandra, Revnivtsev, Mikhail G., Durant, Martin, Gandhi, Poshak, Poutanen, Juri

“…We report the discovery of the correlated optical/X-ray low-frequency quasi-periodic oscillations (QPOs) in black hole binary SWIFT J1753.5–0127. The phase lag…”
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Expanding hot flow in the black hole binary SWIFT J1753.5−0127: evidence from optical timing by Veledina, Alexandra, Gandhi, Poshak, Hynes, Robert, Kajava, Jari J. E., Tsygankov, Sergey S., Revnivtsev, Michail G., Durant, Martin, Poutanen, Juri

“…Abstract We describe the evolution of optical and X-ray temporal characteristics during the outburst decline of the black hole X-ray binary SWIFT J1753.5−0127…”
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Dramatic Drop in the X-Ray Polarization of Swift J1727.8–1613 in the Soft Spectral State by Svoboda, Jiří, Dovčiak, Michal, Steiner, James F., Kaaret, Philip, Podgorný, Jakub, Poutanen, Juri, Veledina, Alexandra, Muleri, Fabio, Taverna, Roberto, Krawczynski, Henric, Brigitte, Maïmouna, Datta, Sudeb Ranjan, Bianchi, Stefano, Muñoz-Darias, Teo, Negro, Michela, Rodriguez Cavero, Nicole, Castro Segura, Noel, Bollemeijer, Niek, García, Javier A., Ingram, Adam, Matt, Giorgio, Nathan, Edward, Weisskopf, Martin C., Altamirano, Diego, Baldini, Luca, Capitanio, Fiamma, Egron, Elise, Emami, Razieh, Hu, Kun, Marra, Lorenzo, Mastroserio, Guglielmo, Petrucci, Pierre-Olivier, Ratheesh, Ajay, Soffitta, Paolo, Tombesi, Francesco, Yang, Yi-Jung, Zhang, Yuexin

“…Abstract Black hole X-ray binaries exhibit different spectral and timing properties in different accretion states. The X-ray outburst of a recently discovered…”
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Spectroscopic evidence for a low-mass black hole in SWIFT J1753.5−0127 by Neustroev, Vitaly V., Veledina, Alexandra, Poutanen, Juri, Zharikov, Sergey V., Tsygankov, Sergey S., Sjoberg, George, Kajava, Jari J. E.

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Modelling Spectral and Timing Properties of Accreting Black Holes: The Hybrid Hot Flow Paradigm by Poutanen, Juri, Veledina, Alexandra

“…The general picture that emerged by the end of 1990s from a large set of optical and X-ray, spectral and timing data was that the X-rays are produced in the…”
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Reprocessing model for the optical quasi-periodic oscillations in black hole binaries by Veledina, Alexandra, Poutanen, Juri

“…A number of black hole X-ray transients show quasi-periodic oscillations (QPOs) in the optical (ultraviolet) and X-ray bands at the same frequency, which…”
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Pulsar Wind-heated Accretion Disk and the Origin of Modes in Transitional Millisecond Pulsar PSR J1023+0038 by Veledina, Alexandra, Nättilä, Joonas, Beloborodov, Andrei M.

“…Transitional millisecond pulsars provide a unique set of observational data for understanding accretion at low rates onto magnetized neutron stars. In…”
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Superhump period of the black hole X-ray binary GX 339−4 by Kosenkov, Ilia A, Veledina, Alexandra

“…ABSTRACT We investigate the variability of optical and near-infrared light curves of the X-ray binary GX 339−4 on a time-scale of days. We use the data in four…”
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Polarized x-rays constrain the disk-jet geometry in the black hole x-ray binary Cygnus X-1 by Krawczynski, Henric, Muleri, Fabio, Dovčiak, Michal, Veledina, Alexandra, Rodriguez Cavero, Nicole, Svoboda, Jiri, Ingram, Adam, Matt, Giorgio, Garcia, Javier A., Loktev, Vladislav, Negro, Michela, Poutanen, Juri, Kitaguchi, Takao, Podgorný, Jakub, Rankin, John, Zhang, Wenda, Berdyugin, Andrei, Berdyugina, Svetlana V., Bianchi, Stefano, Blinov, Dmitry, Capitanio, Fiamma, Di Lalla, Niccolò, Draghis, Paul, Fabiani, Sergio, Kagitani, Masato, Kravtsov, Vadim, Kiehlmann, Sebastian, Latronico, Luca, Lutovinov, Alexander A., Mandarakas, Nikos, Marin, Frédéric, Marinucci, Andrea, Miller, Jon M., Mizuno, Tsunefumi, Molkov, Sergey V., Omodei, Nicola, Petrucci, Pierre-Olivier, Ratheesh, Ajay, Sakanoi, Takeshi, Semena, Andrei N., Skalidis, Raphael, Soffitta, Paolo, Tennant, Allyn F., Thalhammer, Phillipp, Tombesi, Francesco, Weisskopf, Martin C., Wilms, Joern, Zhang, Sixuan, Agudo, Iván, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccolò, Castellano, Simone, Cavazzuti, Elisabetta, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Marco, Alessandro, Donnarumma, Immacolata, Doroshenko, Victor, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Ferrazzoli, Riccardo, Gunji, Shuichi, Hayashida, Kiyoshi, Heyl, Jeremy, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kolodziejczak, Jeffery J., La Monaca, Fabio, Liodakis, Ioannis, Maldera, Simone, Manfreda, Alberto, Marscher, Alan P., Marshall, Herman L., Mitsuishi, Ikuyuki, Ng, Chi-Yung, O’Dell, Stephen L., Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Pilia, Maura, Possenti, Andrea, Puccetti, Simonetta, Ramsey, Brian D., Romani, Roger W., Sgrò, Carmelo

“…A black hole x-ray binary (XRB) system forms when gas is stripped from a normal star and accretes onto a black hole, which heats the gas sufficiently to emit…”
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