Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Stellar mass black holes"'
Autor:
Alan M. Knee, Jess McIver, Smadar Naoz, Isobel M. Romero-Shaw, Bao-Minh Hoang, Evgeni Grishin
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 2, p L38 (2024)
Stellar-mass black hole binaries (BHBs) in galactic nuclei are gravitationally perturbed by the central supermassive black hole (SMBH) of the host galaxy, potentially inducing strong eccentricity oscillations through the eccentric Kozai–Lidov mecha
Externí odkaz:
https://doaj.org/article/672ab736f9b4429589462c91e43491e3
Autor:
Callan M. Wood, James C. A. Miller-Jones, Arash Bahramian, Steven J. Tingay, Steve Prabu, Thomas D. Russell, Pikky Atri, Francesco Carotenuto, Diego Altamirano, Sara E. Motta, Lucas Hyland, Cormac Reynolds, Stuart Weston, Rob Fender, Elmar Körding, Dipankar Maitra, Sera Markoff, Simone Migliari, David M. Russell, Craig L. Sarazin, Gregory R. Sivakoff, Roberto Soria, Alexandra J. Tetarenko, Valeriu Tudose
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L9 (2024)
Multiwavelength polarimetry and radio observations of Swift J1727.8–1613 at the beginning of its recent 2023 outburst suggested the presence of a bright compact jet aligned in the north–south direction, which could not be confirmed without high-a
Externí odkaz:
https://doaj.org/article/be1e89c0b77c453bbaff3060f7108fa2
Autor:
Zi-Xu Yang, Liang Zhang, Shuang-Nan Zhang, Lian Tao, Shu Zhang, Ruican Ma, Qing-Cui Bu, Yue Huang, He-Xin Liu, Wei Yu, Guangcheng Xiao, Peng-Ju Wang, Hua Feng, Li-Ming Song, Xiang Ma, Mingyu Ge, Qing-Chang Zhao, Jin-Lu Qu
Publikováno v:
The Astrophysical Journal Letters, Vol 970, Iss 2, p L33 (2024)
We present an energy-dependent analysis for the type-C quasiperiodic oscillations (QPOs) observed in the black hole X-ray binary Swift J1727.8–1613 using Insight-HXMT observations. We find that the QPO fractional rms at energies above 40 keV is sig
Externí odkaz:
https://doaj.org/article/040eed26240f47528f4152ad36351dad
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 2, p L33 (2024)
We explore the coupling between the accretion flow and the jet in black hole X-ray binary MAXI J1348-630 by analyzing the X-ray and radio observations during its 2019 outburst. We measure the time delay between the radio and Comptonization fluxes wit
Externí odkaz:
https://doaj.org/article/e645810592894a2eafe7fbe23d6f534b
Autor:
James F. Steiner, Edward Nathan, Kun Hu, Henric Krawczynski, Michal Dovčiak, Alexandra Veledina, Fabio Muleri, Jiri Svoboda, Kevin Alabarta, Maxime Parra, Yash Bhargava, Giorgio Matt, Juri Poutanen, Pierre-Olivier Petrucci, Allyn F. Tennant, M. Cristina Baglio, Luca Baldini, Samuel Barnier, Sudip Bhattacharyya, Stefano Bianchi, Maimouna Brigitte, Mauricio Cabezas, Floriane Cangemi, Fiamma Capitanio, Jacob Casey, Nicole Rodriguez Cavero, Simone Castellano, Elisabetta Cavazzuti, Sohee Chun, Eugene Churazov, Enrico Costa, Niccolò Di Lalla, Alessandro Di Marco, Elise Egron, Melissa Ewing, Sergio Fabiani, Javier A. García, David A. Green, Victoria Grinberg, Petr Hadrava, Adam Ingram, Philip Kaaret, Fabian Kislat, Takao Kitaguchi, Vadim Kravtsov, Brankica Kubátová, Fabio La Monaca, Luca Latronico, Vladislav Loktev, Christian Malacaria, Frédéric Marin, Andrea Marinucci, Olga Maryeva, Guglielmo Mastroserio, Tsunefumi Mizuno, Michela Negro, Nicola Omodei, Jakub Podgorný, John Rankin, Ajay Ratheesh, Lauren Rhodes, David M. Russell, Miroslav Šlechta, Paolo Soffitta, Sean Spooner, Valery Suleimanov, Francesco Tombesi, Sergei A. Trushkin, Martin C. Weisskopf, Silvia Zane, Andrzej A. Zdziarski, Sixuan Zhang, Wenda Zhang, Menglei Zhou, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Wayne H. Baumgartner, Ronaldo Bellazzini, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, Chien-Ting Chen, Stefano Ciprini, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Immacolata Donnarumma, Victor Doroshenko, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Riccardo Ferrazzoli, Shuichi Gunji, Kiyoshi Hayashida, Jeremy Heyl, Wataru Iwakiri, Svetlana G. Jorstad, Vladimir Karas, Jeffery J. Kolodziejczak, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Alan P. Marscher, Herman L. Marshall, Francesco Massaro, Ikuyuki Mitsuishi, Chi-Yung Ng, Stephen L. O’Dell, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Abel L. Peirson, Matteo Perri, Melissa Pesce-Rollins, Maura Pilia, Andrea Possenti, Simonetta Puccetti, Brian D. Ramsey, Oliver J. Roberts, Roger W. Romani, Carmelo Sgrò, Patrick Slane, Gloria Spandre, Douglas A. Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Nicholas E. Thomas, Alessio Trois, Sergey S. Tsygankov, Roberto Turolla, Jacco Vink, Kinwah Wu, Fei Xie
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 2, p L30 (2024)
We present the first X-ray spectropolarimetric results for Cygnus X-1 in its soft state from a campaign of five IXPE observations conducted during 2023 May–June. Companion multiwavelength data during the campaign are likewise shown. The 2–8 keV X
Externí odkaz:
https://doaj.org/article/002d290a739840cf959c4f7cd5aff9dd
Autor:
Jiří Svoboda, Michal Dovčiak, James F. Steiner, Philip Kaaret, Jakub Podgorný, Juri Poutanen, Alexandra Veledina, Fabio Muleri, Roberto Taverna, Henric Krawczynski, Maïmouna Brigitte, Sudeb Ranjan Datta, Stefano Bianchi, Teo Muñoz-Darias, Michela Negro, Nicole Rodriguez Cavero, Noel Castro Segura, Niek Bollemeijer, Javier A. García, Adam Ingram, Giorgio Matt, Edward Nathan, Martin C. Weisskopf, Diego Altamirano, Luca Baldini, Fiamma Capitanio, Elise Egron, Razieh Emami, Kun Hu, Lorenzo Marra, Guglielmo Mastroserio, Pierre-Olivier Petrucci, Ajay Ratheesh, Paolo Soffitta, Francesco Tombesi, Yi-Jung Yang, Yuexin Zhang
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 2, p L35 (2024)
Black hole X-ray binaries exhibit different spectral and timing properties in different accretion states. The X-ray outburst of a recently discovered and extraordinarily bright source, Swift J1727.8–1613, has enabled the first investigation of how
Externí odkaz:
https://doaj.org/article/c3981f9986a94dfcb8bda2426e5eb90e
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 1, p L16 (2024)
Gravitational-wave observations provide the unique opportunity of studying black hole formation channels and histories—but only if we can identify their origin. One such formation mechanism is the dynamical synthesis of black hole binaries in dense
Externí odkaz:
https://doaj.org/article/0933d191aeee4d49b2d4c20fed820385
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 2, p L25 (2024)
Nuclear star clusters (NSCs), made up of a dense concentration of stars and the compact objects they leave behind, are ubiquitous in the central regions of galaxies surrounding the central supermassive black hole (SMBH). Close interactions between st
Externí odkaz:
https://doaj.org/article/d3f6ebfcdb13425ebcaf225acc985e06
Autor:
Qing-Cang Shui, Shu Zhang, Jing-Qiang Peng, Shuang-Nan Zhang, Yu-Peng Chen, Long Ji, Ling-Da Kong, Hua Feng, Zhuo-Li Yu, Peng-Ju Wang, Zhi Chang, Hong-Xing Yin, Jin-Lu Qu, Lian Tao, Ming-Yu Ge, Liang Zhang, Jian Li
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 59 (2024)
Low-frequency quasiperiodic oscillations (LFQPOs) are commonly observed in X-ray light curves of black hole X-ray binaries (BHXRBs); however, their origin remains a topic of debate. In order to thoroughly investigate variations in spectral properties
Externí odkaz:
https://doaj.org/article/a9dcce448ad04a378149e5622e94bee0
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 5 (2024)
The natal kick velocity distribution for black holes (BHs) is unknown regardless of its importance for understanding the BH formation process. Gravitational microlensing is a unique tool for studying the distribution of BHs in our Galaxy, and the fir
Externí odkaz:
https://doaj.org/article/b193c8fdaf1f4a528f69274408e6db0e