Results 101 to 110 of about 6,061,876 (188)

X-Ray Polarization from the Atoll 4U 1735−44 Suggests a Low Inclination

The Astrophysical Journal
X-ray polarimetry is a new tool capable of probing the geometry of accretion onto weakly magnetized neutron stars. Here we present the first X-ray spectropolarimetric results from coordinated observations of the atoll source 4U 1735−44, conducted with ...
María Alejandra Díaz Teodori, Anna Bobrikova, Andrea Gnarini, Francesco Ursini, Sofia V. Forsblom, Juri Poutanen, Alexander Salganik, Stefano Bianchi, Fiamma Capitanio, Massimo Cocchi, Sergio Fabiani, Ruben Farinelli, Philip Kaaret, Jari J. E. Kajava, Giorgio Matt, Mason Ng, Swati Ravi, Paolo Soffitta, Antonella Tarana, Silvia Zane   +19 more
doaj   +1 more source

Polarization Reconstruction Based on Monte Carlo Simulations for a Compton Polarimeter

Atoms
State-of-the-art 2D sensitive semiconductor detectors developed within the SPARC collaboration can be utilized as dedicated Compton polarimeters in the hard X-ray regime.
Tobias Over-Winter, Wilko Middents, Günter Weber, Thomas Stöhlker   +3 more
doaj   +1 more source

Mirror module design of x-ray telescopes of eXTP mission [PDF]

, 2019
The eXTP (enhanced X-Ray Timing and Polarimetry) mission is a Chinese science space mission developed in collaboration with many international countries.
PARESCHI, Giovanni, Qiang, P., Chen, Y., BASSO, Stefano, SPIGA, Daniele, Xu, Y., Sheng, L., Wang, J., Yang, Y., CIVITANI, Marta Maria, Zhao, B., SIRONI, GIORGIA, Yan, Y., TAGLIAFERRI, Gianpiero   +13 more
core   +1 more source

Analysis of Crab X-Ray Polarization Using Deeper Imaging X-Ray Polarimetry Explorer Observations

The Astrophysical Journal
We present Crab X-ray polarization measurements using Imaging X-Ray Polarimetry Explorer (IXPE) data with a total exposure of 300 ks, three times more than the initial 2022 discovery paper.
Josephine Wong, Tsunefumi Mizuno, Niccoló Bucciantini, Roger W. Romani, Yi-Jung Yang, Kuan Liu, Wei Deng, Kazuho Goya, Fei Xie, Maura Pilia, Philip Kaaret, Martin C. Weisskopf, Stefano Silvestri, C.-Y. Ng, Chien-Ting Chen, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Niccoló Di Lalla, Alessandro Di Marco, Immacolata Donnarumma, Victor Doroshenko, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A. Garcia, Shuichi Gunji, Jeremy Heyl, Wataru Iwakiri, Svetlana G. Jorstad, Vladimir Karas, Fabian Kislat, 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, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Fabio Muleri, Michela Negro, Stephen L. O’Dell, Nicola Omodei, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Abel Lawrence Peirson, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Andrea Possenti, Juri Poutanen, Simonetta Puccetti, Brian D. Ramsey, John Rankin, Ajay Ratheesh, Oliver J. Roberts, Carmelo Sgró, Patrick Slane, Paolo Soffitta, Gloria Spandre, Douglas A. Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn F. Tennant, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Sergey Tsygankov, Roberto Turolla, Jacco Vink, Kinwah Wu, Silvia Zane   +100 more
doaj   +1 more source

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

Quantitative chemical analysis of pickling solutions by x-ray fluorescence spectrometry

, 2019
A quantitative analytical method of chlorine and iron in hydrochloric pickling solutions by x-ray spectrometry in atmospheric He mode is proposed. This work is concerned with the replacement of the wet chemical analyses of pickling solutions with rapid ...
Na, HG, Min, DJ, Jung, SM, Cho, YM
core   +1 more source

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 of Supernova Remnants

, 2021
Young supernova remnants such as Tycho, Cas A and SN1006 are relativistic particle accelerators and likely the sources of Galactic cosmic rays. In these sources X-ray synchrotron emitting regions, such as the shock fronts, have been identified and their ...
Ferrazzoli Riccardo
core