Results 101 to 110 of about 13,324 (197)

Polarized X-rays from Magnetized Neutron Stars

, 2009
We review the polarization properties of X-ray emission from highly magnetized neutron stars, focusing on emission from the stellar surfaces. We discuss how x-ray polarization can be used to constrain neutron star magnetic field and emission geometry ...
Heyl, Jeremy S., Ho, Wynn C. G., Lai, Dong, van Adelsberg, Matthew, Wang, Chen   +4 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

Active galaxy unification in the era of X-ray polarimetry

, 2010
Active Galactic Nuclei (AGN), Seyfert galaxies and quasars, are powered by luminous accretion and often accompanied by winds which are powerful enough to affect the AGN mass budget, and whose observational appearance bears an imprint of processes which ...
Dorodnitsyn, A., Kallman, T.
core   +1 more source

X-Ray Polarimetry as a Tool to Constrain Orbital Parameters in X-Ray Binaries

The Astrophysical Journal
X-ray binary systems consist of a companion star and a compact object in close orbit. Thanks to their copious X-ray emission, these objects have been studied in detail using X-ray spectroscopy and timing.
John Rankin, Vadim Kravtsov, Fabio Muleri, Juri Poutanen, Frédéric Marin, Fiamma Capitanio, Giorgio Matt, Enrico Costa, Alessandro Di Marco, Sergio Fabiani, Fabio La Monaca, Lorenzo Marra, Paolo Soffitta   +12 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

Polarization properties of X-ray millisecond pulsars

, 2009
Radiation of X-ray bursts and of accretion shocks in weakly magnetized neutron stars in low-mass X-ray binaries is produced in plane-parallel atmospheres dominated by electron scattering.
Poutanen, Juri
core   +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

X-ray polarimetry with an active-matrix pixel proportional counter

, 2003
We report the first results from an X-ray polarimeter with a micropattern gas proportional counter using an amorphous silicon active matrix readout.
Black, J. K., Deines-Jones, P., Ready, S. E., Street, R. A.   +3 more
core   +1 more source

General History of X-Ray Polarimetry in Astrophysics

, 2022
19 pages, no figure, Invited Chapter for the "Handbook of X-Ray and Gamma-Ray Astrophysics" (Eds. C.Bambi and A.Santangelo, Springer Singapore, expected in 2022)
openaire   +2 more sources

IXPE Mirror Module Assemblies [PDF]

Expected to launch in 2021 Spring, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Astrophysics Small Explorer Mission with significant contributions from the Italian space agency (ASI).
Alexander, Cheryl, Baumgartner, Wayne H., Bongiorno, Stephen D., Elsner, Ronald F., Kilaru, Kiranmayee, Kolodziejczak, Jeffery J., McCracken, Jeffrey, Mitsuishi, Ikuyuki, O’Dell, Stephen L., Pavelitz, Steven D., Ramsey, Brian D., Ranganathan, Jaganathan, Sanchez, Javier, Speegle, Chet O., Weddendorf, Bruce   +14 more
core   +1 more source