Results 91 to 100 of about 6,376,337 (186)

An Examination of the Very First Polarimetric X-ray Observations of Radio-Quiet Active Galactic Nuclei

Galaxies
Active galactic nuclei (AGNs), either radio-quiet or radio-loud, had never been observed in X-ray polarized light until the advent of the Imaging X-ray Polarimetry Explorer (IXPE) in the end of 2021.
Frédéric Marin, Vittoria E. Gianolli, Adam Ingram, Dawoon E. Kim, Andrea Marinucci, Daniele Tagliacozzo, Francesco Ursini   +6 more
doaj   +1 more source

X-Ray Views of Galactic Accreting Pulsars in High-Mass X-Ray Binaries

Universe
Accreting X-ray pulsars, located in X-ray binaries, are neutron stars with magnetic fields as strong as B∼1012–13 G. This review offers a concise overview of the accretion and radiation processes of X-ray pulsars and summarizes their rich observational ...
Shan-Shan Weng, Long Ji
doaj   +1 more source

The prospects of X-ray polarimetry for Active Galactic Nuclei

, 2016
Polarimetry at optical and other wavelength continues to play an important role in our struggle to develop (super-)unification schemes for active galactic nuclei (AGN).
Goosmann, René W. (5289259), Goosmann, René W.   +1 more
core   +1 more source

The first IXPE view of the eclipsing accretion-disc corona source 4U 1822–37

Astronomy & Astrophysics
Context. 4U 1822–37 is a high-inclination eclipsing neutron-star low-mass X-ray binary and a prototype accretion-disc corona (ADC) source, in which the direct inner emission is largely obscured and the observed X-ray flux is dominated by scattered ...
Anitra A., Gnarini A., Di Salvo T., Iaria R., Marino A., Barra F., Burderi L., Sanna A., Marra L., Bianchi S., Matt G., Ursini F., Miceli C., Miraval Zanon A., Leone W., Capitanio F., Fabiani S., Kaaret P., Tarana A.   +18 more
doaj   +1 more source

X-ray polarimetry: a new window in astrophysics

, 2010
Presenting detailed papers and broad reviews, this volume provides a complete view of X-ray polarimetry for researchers in ...
Matt, Giorgio, Costa, Enrico, Tagliaferri, Gianpiero, Bellazzini, Ronaldo   +3 more
core  

IXPE - The Imaging X-Ray Polarimetry Explorer [PDF]

, 2014
The Imaging X-ray Polarimetry Explorer (IXPE) is a Small Explorer Mission that will be proposed in response to NASA's upcoming Announcement of Opportunity.
Ramsey, Brian
core  

Simultaneous X-Ray and Optical Polarization Observations of the Blazar Mrk 421

The Astrophysical Journal
We present near-simultaneous X-ray and optical polarization measurements in the high synchrotron peaked (HSP) blazar Mrk 421. The X-ray polarimetric observations were carried out using Imaging X-ray Polarimetry Explorer (IXPE) on 2023 December 6.
Athira M. Bharathan, C. S. Stalin, S. Sahayanathan, Kiran Wani, Amit Kumar Mandal, Rwitika Chatterjee, Santosh Joshi, Jeewan C. Pandey, Blesson Mathew, Vivek K. Agrawal   +9 more
doaj   +1 more source

X-ray polarimetry as a new method of studying X-ray binary systems [PDF]

This thesis investigates black hole X-ray binaries through multi-instrument observational data, focusing on spectral and polarimetric analysis. These systems, in which a black hole accretes matter from a companion star, serve as laboratories for studying
Bocharova, Anastasiia
core  

X-Ray Polarized View of the Accretion Geometry in the X-Ray Binary Circinus X-1

The Astrophysical Journal Letters
Cir X-1 is a neutron star X-ray binary characterized by strong variations in flux during its eccentric ∼16.6 day orbit. There are also strong variations in the spectral state, and it has historically shown both atoll and Z state properties.
John Rankin, Fabio La Monaca, Alessandro Di Marco, Juri Poutanen, Anna Bobrikova, Vadim Kravtsov, Fabio Muleri, Maura Pilia, Alexandra Veledina, Rob Fender, Philip Kaaret, Dawoon E. Kim, Andrea Marinucci, Herman L. Marshall, Alessandro Papitto, Allyn F. Tennant, Sergey S. Tsygankov, Martin C. Weisskopf, Kinwah Wu, Silvia Zane, Filippo Ambrosino, Ruben Farinelli, Andrea Gnarini, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Niccolò Di Lalla, Immacolata Donnarumma, Victor Doroshenko, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A. Garcia, Shuichi Gunji, Kiyoshi Hayashida, Jeremy Heyl, Wataru Iwakiri, Svetlana G. Jorstad, Vladimir Karas, Fabian Kislat, Takao Kitaguchi, Jeffery J. Kolodziejczak, Henric Krawczynski, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Alan P. Marscher, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Michela Negro, Chi-Yung Ng, Stephen L. O’Dell, Nicola Omodei, Chiara Oppedisano, George G. Pavlov, Abel L. Peirson, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Andrea Possenti, Simonetta Puccetti, Brian D. Ramsey, Ajay Ratheesh, Oliver J. Roberts, Roger W. Romani, Carmelo Sgrò, Patrick Slane, Paolo Soffitta, Gloria Spandre, Douglas A. Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Roberto Turolla, Jacco Vink, Fei Xie   +103 more
doaj   +1 more source

X-ray Polarimetry [PDF]

Proceedings of The Extreme and Variable High Energy Sky — PoS(Extremesky 2011), 2012
openaire   +1 more source