Results 1 to 10 of about 1,969,668 (250)
Polarized x-rays constrain the disk-jet geometry in the black hole x-ray binary Cygnus X-1 [PDF]
Science, 2022 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 x-rays.H. Krawczynski, F. Muleri, M. Dovčiak, A. Veledina, N. Rodriguez Cavero, J. Svoboda, A. Ingram, G. Matt, Javier A. García, V. Loktev, M. Negro, J. Poutanen, T. Kitaguchi, J. Podgorný, J. Rankin, Wenda Zhang, A. Berdyugin, S. Berdyugina, S. Bianchi, D. Blinov, F. Capitanio, N. Di Lalla, P. Draghis, S. Fabiani, M. Kagitani, V. Kravtsov, S. Kiehlmann, L. Latronico, A. Lutovinov, N. Mandarakas, F. Marin, A. Marinucci, Jonathan M. Miller, T. Mizuno, S. Molkov, N. Omodei, P. Petrucci, A. Ratheesh, T. Sakanoi, A. Semena, R. Skalidis, P. Soffitta, A. Tennant, P. Thalhammer, F. Tombesi, M. Weisskopf, J. Wilms, Sixuan Zhang, I. Agudo, L. A. Antonelli, M. Bachetti, L. Baldini, W. Baumgartner, R. Bellazzini, S. Bongiorno, R. Bonino, A. Brez, N. Bucciantini, S. Castellano, E. Cavazzuti, S. Ciprini, E. Costa, A. De Rosa, E. Del Monte, L. Di Gesu, A. Di Marco, I. Donnarumma, Victor Doroshenko, S. Ehlert, T. Enoto, Y. Evangelista, R. Ferrazzoli, S. Gunji, K. Hayashida, J. Heyl, W. Iwakiri, S. Jorstad, V. Karas, J. Kolodziejczak, F. La Monaca, I. Liodakis, S. Maldera, A. Manfreda, A. Marscher, H. Marshall, I. Mitsuishi, C. Ng, S. O’Dell, C. Oppedisano, A. Papitto, G. Pavlov, A. L. Peirson, M. Perri, M. Pesce-Rollins, M. Pilia, A. Possenti, S. Puccetti, B. Ramsey, R. Romani, C. Sgro’, P. Slane, G. Spandre, T. Tamagawa, F. Tavecchio, R. Taverna, Y. Tawara, N. Thomas, A. Trois, S. Tsygankov, R. Turolla, J. Vink, Kinwah Wu, F. Xie, S. Zane +113 moresemanticscholar +1 more sourcePolarization Properties of the Weakly Magnetized Neutron Star X-Ray Binary GS 1826–238 in the High Soft State
The Astrophysical Journal, 2023 The launch of the Imaging X-ray Polarimetry Explorer (IXPE) on 2021 December 9 has opened a new window in X-ray astronomy. We report here the results of the first IXPE observation of a weakly magnetized neutron star, GS 1826−238, performed on 2022 March ...Fiamma Capitanio, Sergio Fabiani, Andrea Gnarini, Francesco Ursini, Carlo Ferrigno, Giorgio Matt, Juri Poutanen, Massimo Cocchi, Romana Mikusincova, Ruben Farinelli, Stefano Bianchi, Jari J. E. Kajava, Fabio Muleri, Celia Sanchez-Fernandez, Paolo Soffitta, Kinwah Wu, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, Simone Castellano, Elisabetta Cavazzuti, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Niccolò Di Lalla, Alessandro Di Marco, Immacolata Donnarumma, Victor Doroshenko, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Riccardo Ferrazzoli, Javier A. Garcia, Shuichi Gunji, Kiyoshi Hayashida, Jeremy Heyl, Wataru Iwakiri, Svetlana G. Jorstad, Vladimir Karas, Takao Kitaguchi, Jeffery J. Kolodziejczak, Henric Krawczynski, Fabio La Monaca, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Andrea Marinucci, Alan P. Marscher, Herman L. Marshall, Ikuyuki Mitsuishi, Tsunefumi Mizuno, C.-Y. Ng, Stephen L. O’Dell, Nicola Omodei, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Abel L. Peirson, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Maura Pilia, Andrea Possenti, Simonetta Puccetti, Brian D. Ramsey, John Rankin, Ajay Ratheesh, Roger W. Romani, Carmelo Sgrò, Patrick Slane, Gloria Spandre, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn F. Tennant, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Sergey S. Tsygankov, Roberto Turolla, Jacco Vink, Martin C. Weisskopf, Fei Xie, Silvia Zane +96 moredoaj +1 more sourceSpectral Energy Distributions of Southern Binary X-Ray Sources
The Astrophysical Journal Supplement Series, 2023 The rapid variability of X-ray binaries (XRBs) produces a wide range of X-ray states that are linked to activity across the electromagnetic spectrum. It is particularly challenging to study a sample of sources large enough to include all types in their ...John M. Dickey, S. D. Vrtilek, Michael McCollough, Bram Boroson, John A. Tomsick, Charles Bailyn, Jay M. Blanchard, Charlotte Johnson +7 moredoaj +1 more sourceThe Metallicity Dependence of the High-mass X-Ray Binary Luminosity Function [PDF]
, 2020 In this work, we present detailed constraints on the metallicity dependence of the high-mass X-ray binary (HMXB) X-ray luminosity function (XLF). We analyze ≈5 Ms of Chandra data for 55 actively star-forming galaxies at D ≲ 30 Mpc, with gas-phase ...B. Lehmer, R. Eufrasio, A. Basu-Zych, K. Doore, T. Fragos, K. Garofali, K. Kovlakas, B. Williams, A. Zezas, L. Santana-Silva +9 moresemanticscholar +1 more sourceA radio parallax to the black hole X-ray binary MAXI J1820+070 [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2019
Using the Very Long Baseline Array and the European Very Long Baseline Interferometry Network, we have made a precise measurement of the radio parallax of the black hole X-ray binary MAXI J1820+070, providing a model-independent distance to the source. P. Atri, J. Miller-Jones, A. Bahramian, R. Plotkin, R. Plotkin, Adam T. Deller, P. Jonker, P. Jonker, T. Maccarone, G. Sivakoff, Roberto Soria, Roberto Soria, D. Altamirano, T. Belloni, R. Fender, E. Koerding, D. Maitra, S. Markoff, Simone Migliari, D. Russell, T. Russell, C. Sarazin, A. Tetarenko, V. Tudose +23 moresemanticscholar +1 more sourceAn Optically Discovered Outburst from XTE J1859+226
The Astrophysical Journal, 2023 Using the Zwicky Transient Facility, in 2021 February we identified the first known outburst of the black hole X-ray transient XTE J1859+226 since its discovery in 1999. The outburst was visible at X-ray, UV, and optical wavelengths for less than 20 days,Eric C. Bellm, Yuankun Wang, Jan van Roestel, Rebecca A. Phillipson, Michael W. Coughlin, John A. Tomsick, Steven L. Groom, Brian Healy, Josiah Purdum, Ben Rusholme, Jesper Sollerman, Peter Bealo, Stefano Lora, Eddy Muyllaert, Ivo Peretto, Erik J. Schwendeman +15 moredoaj +1 more sourceX-Ray Binary Luminosity Function Scaling Relations for Local Galaxies Based on Subgalactic Modeling [PDF]
Astrophysical Journal Supplement Series, 2019 We present new Chandra constraints on the X-ray luminosity functions (XLFs) of X-ray binary (XRB) populations, as well as their scaling relations, for a sample of 38 nearby galaxies (D = 3.4–29 Mpc).B. Lehmer, R. Eufrasio, P. Tzanavaris, A. Basu-Zych, T. Fragos, A. Prestwich, M. Yukita, A. Zezas, A. Hornschemeier, A. Ptak +9 moresemanticscholar +1 more sourceClumpy Wind Studies and the Nondetection of a Cyclotron Line in OAO 1657–415
The Astrophysical Journal, 2023 Winds of massive stars are suspected to be inhomogeneous (or clumpy), which biases the measures of their mass-loss rates. In high-mass X-ray binaries (HMXBs), the compact object can be used as an orbiting X-ray point source to probe the wind and ...Pragati Pradhan, Carlo Ferrigno, Biswajit Paul, Enrico Bozzo, Ileyk El Mellah, David P. Huenemoerder, James F. Steiner, Victoria Grinberg, Felix Furst, Chandreyee Maitra, Patrizia Romano, Peter Kretschmar, Jamie Kennea, Deepto Chakrabarty +13 moredoaj +1 more sourceDiscovery of a 2.8 s Pulsar in a 2 Day Orbit High-mass X-Ray Binary Powering the Ultraluminous X-Ray Source ULX-7 in M51 [PDF]
Astrophysical Journal, 2019 We discovered 2.8 s pulsations in the X-ray emission of the ultraluminous X-ray source (ULX) M51 ULX-7 within the UNSEeN project, which was designed to hunt for new pulsating ULXs (PULXs) with XMM-Newton.G. A. R. Castillo, G. Israel, A. Belfiore, Federico Bernardini, P. Esposito, F. Pintore, A. D. Luca, A. Papitto, L. Stella, A. Tiengo, L. Zampieri, M. Bachetti, M. Brightman, P. Casella, D. D’Agostino, S. Dall’Osso, H. Earnshaw, F. Fürst, F. Haberl, F. Harrison, M. Mapelli, M. Marelli, M. Middleton, C. Pinto, T. P. Roberts, R. Salvaterra, R. Turolla, D. Walton, A. Wolter +28 moresemanticscholar +1 more source
