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Related papers: Polarized x-rays from a magnetar
200 papers
We present results from simultaneous X-ray polarimetric and spectroscopic observations of the bright neutron star low-mass X-ray binary Cyg X-2, performed by the Imaging X-ray Polarimetry Explorer (IXPE) and the Nuclear Spectroscopic…
High Energy Astrophysical Phenomena · Physics
2026-01-21
Andrea Gnarini , Swati Ravi , Philip Kaaret , Anna Bobrikova , Juri Poutanen , Sofia V. Forsblom , Francesco Ursini , Maria Cristina Baglio , Stefano Bianchi , Fiamma Capitanio , Massimo Cocchi , Maria Alejandra Diaz Teodori , Sergio Fabiani , Ruben Farinelli , Giorgio Matt , Mason Ng , Alexander Salganik , Paolo Soffitta , Antonella Tarana , Silvia Zane
We report the first detection of X-ray polarization with the Imaging X-ray Polarimetry Explorer from the X-ray pulsar (XRP) 4U 1954$+$319. The source belongs to an extremely rare class of systems in which a slowly rotating neutron star…
High Energy Astrophysical Phenomena · Physics
2026-05-26
Alexander Salganik , Lingda Kong , Sofia V. Forsblom , Menglei Zhou , Honghui Liu , QingChang Zhao , Sergey S. Tsygankov , Andrea Santangelo , Juri Poutanen
X-ray polarimetry missions like IXPE will be able to measure for the first time the polarization properties of accreting, weakly magnetized neutron stars in Low Mass X-ray Binaries. In this work we present simulations of the expected X-ray…
High Energy Astrophysical Phenomena · Physics
2022-06-06
Andrea Gnarini , Francesco Ursini , Giorgio Matt , Stefano Bianchi , Fiamma Capitanio , Massimo Cocchi , Ruben Farinelli , Wenda Zhang
Low-mass X-ray binaries hosting weakly magnetized neutron stars (NS-LMXBs) are among the brightest sources in the X-ray sky. Since 2021, the Imaging X-ray Polarimetry Explorer (IXPE) has provided new measurements of the X-ray polarization…
High Energy Astrophysical Phenomena · Physics
2024-09-12
Francesco Ursini , Andrea Gnarini , Fiamma Capitanio , Anna Bobrikova , Massimo Cocchi , Alessandro Di Marco , Sergio Fabiani , Ruben Farinelli , Fabio La Monaca , John Rankin , Mary Lynne Saade , Juri Poutanen
The Imaging X-ray Polarimetry Explorer (IXPE) observed the black hole X-ray binary 4U 1630-47 in the steep power law (or very high) state. The observations reveal a linear polarization degree of the 2-8 keV X-rays of 6.8 +/- 0.2 % at a…
High Energy Astrophysical Phenomena · Physics
2023-05-19
Nicole Rodriguez Cavero , Lorenzo Marra , Henric Krawczynski , Michal Dovčiak , Stefano Bianchi , James F. Steiner , Jiri Svoboda , Fiamma Capitanio , Giorgio Matt , Michela Negro , Adam Ingram , Alexandra Veledina , Roberto Taverna , Vladimir Karas , Francesco Ursini , Jakub Podgorný , Ajay Ratheesh , Valery Suleimanov , Romana Mikušincová , Silvia Zane , Philip Kaaret , Fabio Muleri , Juri Poutanen , Christian Malacaria , Pierre-Olivier Petrucci , Ephraim Gau , Kun Hu , Sohee Chun , 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 , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Laura Di Gesu , Niccolò Di Lalla , Alessandro Di Marco , Immacolata Donnarumma , Victor Doroshenko , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. García , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Svetlana G. Jorstad , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Fabio La Monaca , Luca Latronico , Ioannis Liodakis , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Alan P. Marscher , Herman L. Marshall , Francesco Massaro , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Chi-Yung Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel L. Peirson , Matteo Perri , Melissa Pesce-Rollins , Maura Pilia , Andrea Possenti , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Oliver J. Roberts , Roger W. Romani , Carmelo Sgrò , Patrick Slane , Gloria Spandre , Paolo Soffitta , Douglas A. Swartz , Toru Tamagawa , Fabrizio Tavecchio , Yuzuru Tawara , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie
X-ray binaries hosting a compact object have been among the main targets of the Imaging X-ray Polarimetry Explorer (IXPE) since its launch, due to their high brightness in the 2-8 keV energy band. The spectropolarimetric analysis performed…
High Energy Astrophysical Phenomena · Physics
2024-01-30
R. Farinelli , A. Waghmare , L. Ducci , A. Santangelo
Recent observations of X-ray pulsars (XRPs) performed by the Imaging X-ray Polarimetry Explorer (IXPE) have made it possible to investigate the intricate details of these objects in a new way, thanks to the added value of X-ray polarimetry.…
High Energy Astrophysical Phenomena · Physics
2024-11-20
Sofia V. Forsblom , Sergey S. Tsygankov , Juri Poutanen , Victor Doroshenko , Alexander A. Mushtukov , Mason Ng , Swati Ravi , Herman L. Marshall , Alessandro Di Marco , Fabio La Monaca , Christian Malacaria , Guglielmo Mastroserio , Vladislav Loktev , Andrea Possenti , Valery F. Suleimanov , Roberto Taverna , Ivan Agudo , Lucio A. Antonelli , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Raffaella Bonino , Alessandro Brez , Niccolo Bucciantini , Fiamma Capitanio , Simone Castellano , Elisabetta Cavazzuti , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Laura Di Gesu , Niccolo Di Lalla , Immacolata Donnarumma , Michal Dovciak , 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 , Philip Kaaret , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Luca Latronico , Ioannis Liodakis , Simone Maldera , Alberto Manfreda , Frederic Marin , Andrea Marinucci , Alan P. Marscher , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , Michela Negro , Chi-Yung 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 , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , Carmelo Sgro , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas A. Swartz , Toru Tamagawa , Fabrizio Tavecchio , Yuzuru Tawara , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane
We report the first X-ray and radio polarimetric results of the neutron star (NS) low-mass X-ray binary (LMXB) atoll-source 4U 1728-34 using the Imaging X-ray Polarimetry Explorer (IXPE) and Australia Telescope Compact Array (ATCA). We…
High Energy Astrophysical Phenomena · Physics
2025-06-05
Unnati Kashyap , Thomas J. Maccarone , Thomas D. Russell , Mason Ng , Swati Ravi , Eliot C. Pattie , Herman L. Marshall
We present the first X-ray polarimetric study of the dipping accreting neutron star 4U 1624$-$49 with the Imaging X-ray Polarimetry Explorer (IXPE). We report a detection of polarization in the non-dip time intervals with a confidence level…
High Energy Astrophysical Phenomena · Physics
2024-01-29
M. Lynne Saade , Philip Kaaret , Andrea Gnarini , Juri Poutanen , Francesco Ursini , Stefano Bianchi , Anna Bobrikova , Fabio La Monaca , Alessandro Di Marco , Fiamma Capitanio , Alexandra Veledina , Ivan Agudo , Lucio A. Antonelli , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stephen D. Bongiorno , Raffaella Bonino , Alessandro Brez , Niccolo Bucciantini , Simone Castellano , Elisabetta Cavazzuti , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Laura Di Gesù , Niccolo Di Lalla , Immacolata Donnarumma , Victor Doroshenko , Michal Dovciak , Steven R. Ehlert , Teruaki Emote , 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 , Frederic Marin , Andrea Marinucci , Alan P. Marscher , Herman L. Marshall , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizudo , Fabio Muleri , Michela Negro , Chi-Yung Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel L. Peirson , Matteo Perri , Melissa Pesce-Rollins , Pierre-Oliver Petrucci , Maura Pilia , Andrea Possenti , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , Carmelo Sgro , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas Z. Zwartz , Toru Tamagawa , Fabrizio Tavecchio , Roberto Taverna , Yuzuru Tawara , Allyn F. Tenant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane
Observations of linear polarization in the 2-8 keV energy range with the Imaging X-ray Polarimetry Explorer (IXPE) explore the magnetic field geometry and dynamics of the regions generating non-thermal radiation in relativistic jets of…
High Energy Astrophysical Phenomena · Physics
2024-02-26
Manel Errando , Ioannis Liodakis , Alan P. Marscher , Herman L. Marshall , Riccardo Middei , Michela Negro , Abel Lawrence Peirson , Matteo Perri , Simonetta Puccetti , Pazit L. Rabinowitz , Iván Agudo , Svetlana G. Jorstad , Sergey S. Savchenko , Dmitry Blinov , Ioakeim G. Bourbah , Sebastian Kiehlmann , Evangelos Kontopodis , Nikos Mandarakas , Stylianos Romanopoulos , Raphael Skalidis , Anna Vervelaki , Francisco José Aceituno , Maria I. Bernardos , Giacomo Bonnoli , Víctor Casanova , Beatriz Agís-González , César Husillos , Alessandro Marchini , Alfredo Sota , Pouya M. Kouch , Elina Lindfors , Carolina Casadio , Juan Escudero , Ioannis Myserlis , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Hiroshi Akitaya , Mark Gurwell , Garrett K. Keating , Ramprasad Rao , Adam Ingram , Francesco Massaro , Lucio Angelo Antonelli , Raffaella Bonino , Elisabetta Cavazzuti , Chien-Ting Chen , Nicolò Cibrario , Stefano Ciprini , Alessandra De Rosa , Laura Di Gesu , Federico Di Pierro , Immacolata Donnarumma , Steven R. Ehlert , Francesco Fenu , Ephraim Gau , Vladimir Karas , Dawoon E. Kim , Henric Krawczynski , Marco Laurenti , Lindsey Lisalda , Rubén López-Coto , Grzegorz Madejski , Frédéric Marin , Andrea Marinucci , Ikuyuki Mitsuishi , Fabio Muleri , Luigi Pacciani , Alessandro Paggi , Pierre-Olivier Petrucci , Nicole Rodriguez Cavero , Roger W. Romani , Fabrizio Tavecchio , Stefano Tugliani , Kinwah Wu , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Alessandro Brez , Niccolò Bucciantini , Fiamma Capitanio , Simone Castellano , Enrico Costa , Ettore Del Monte , Niccolò Di Lalla , Alessandro Di Marco , Victor Doroshenko , Michal Dovčiak , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Philip Kaaret , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Giorgio Matt , C. -Y. Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Melissa Pesce-Rollins , Maura Pilia , Andrea Possenti , Juri Poutanen , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Carmelo Sgrò , 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 S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Fei Xie , Silvia Zane
X-ray polarization measurement of the gold standard of radio-quiet active galactic nuclei : NGC 1068
We used the Imaging X-ray Polarimetry Explorer (IXPE) satellite to measure, for the first time, the 2-8 keV polarization of NGC 1068. We pointed IXPE for a net exposure time of 1.15 Ms on the target, in addition to two ~ 10 ks each Chandra…
High Energy Astrophysical Phenomena · Physics
2024-09-18
F. Marin , A. Marinucci , M. Laurenti , D. E. Kim , T. Barnouin , A. Di Marco , F. Ursini , S. Bianchi , S. Ravi , H. L. Marshall , G. Matt , C. -T. Chen , V. E. Gianolli , A. Ingram , W. P. Maksym , C. Panagiotou , J. Podgorny , S. Puccetti , A. Ratheesh , F. Tombesi , I. Agudo , L. A. Antonelli , M. Bachetti , L. Baldini , W. Baumgartner , R. Bellazzini , S. Bongiorno , R. Bonino , A. Brez , N. Bucciantini , F. Capitanio , S. Castellano , E. Cavazzuti , S. Ciprini , E. Costa , A. De Rosa , E. Del Monte , L. Di Gesu , N. Di Lalla , I. Donnarumma , V. Doroshenko , M. Dovciak , S. Ehlert , T. Enoto , Y. Evangelista , S. Fabiani , R. Ferrazzoli , J. Garcia , S. Gunji , J. Heyl , W. Iwakiri , S. Jorstad , P. Kaaret , V. Karas , F. Kislat , T. Kitaguchi , J. Kolodziejczak , H. Krawczynski , F. La Monaca , L. Latronico , I. Liodakis , G. Madejski , S. Maldera , A. Manfreda , A. Marscher , F. Massaro , I. Mitsuishi , T. Mizuno , F. Muleri , M. Negro , S. Ng , S. O'Dell , N. Omodei , C. Oppedisano , A. Papitto , G. Pavlov , M. Perri , M. Pesce-Rollins , P. -O. Petrucci , M. Pilia , A. Possenti , J. Poutanen , B. Ramsey , J. Rankin , O. Roberts , R. Romani , C. Sgro , P. Slane , P. Soffitta , G. Spandre , D. Swartz , T. Tamagawa , F. Tavecchio , R. Taverna , Y. Tawara , A. Tennant , N. Thomas , A. Trois , S. Tsygankov , R. Turolla , J. Vink , M. Weisskopf , K. Wu , F. Xie , S. Zane
Since the opacity of a magnetized plasma depends on polarization of radiation, the radiation emergent from atmospheres of neutron stars with strong magnetic fields is expected to be strongly polarized. The degree of linear polarization,…
Accreting X-ray pulsars (XRPs) are presumably ideal targets for polarization measurements, as their high magnetic field strength is expected to polarize the emission up to a polarization degree of ~80%. However, such expectations are being…
High Energy Astrophysical Phenomena · Physics
2023-07-12
Christian Malacaria , Jeremy Heyl , Victor Doroshenko , Sergey S. Tsygankov , Juri Poutanen , Sofia V. Forsblom , Fiamma Capitanio , Alessandro Di Marco , Yujia Du , Lorenzo Ducci , Fabio La Monaca , Alexander A. Lutovinov , Herman L. Marshall , Ilya A. Mereminskiy , Sergey V. Molkov , Mason Ng , Pierre-Olivier Petrucci , Andrea Santangelo , Andrey E. Shtykovsky , Valery F. Suleimanov , Ivan Agudo , Lucio A. Antonelli , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Raffaella Bonino , Alessandro Brez , Niccolo Bucciantini , Simone Castellano , Elisabetta Cavazzuti , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Laura Di Gesu , Niccolo Di Lalla , Immacolata Donnarumma , Michal Dovciak , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Wataru Iwakiri , Svetlana G. Jorstad , Philip Kaaret , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak1 , Henric Krawczynski , Luca Latronico , Ioannis Liodakis , Simone Maldera , Alberto Manfreda , Frederic Marin , Andrea Marinucci , Alan P. Marscher , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , Michela Negro , Chi-Yung Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel L. Peirson , Matteo Perri , Melissa Pesce-Rollins , Maura Pilia , Andrea Possenti , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , Carmelo Sgro , 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 , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane
Magnetars, the most strongly magnetised neutron stars, are among the most promising targets for X-ray polarimetry. The Imaging X-ray Polarimetry Explorer (IXPE), the first satellite devoted to exploring the sky in polarised X-rays, has…
High Energy Astrophysical Phenomena · Physics
2024-01-17
Ruth M. E. Kelly , Silvia Zane , Roberto Turolla , Roberto Taverna
We report on the coordinated observations of the neutron star low-mass X-ray binary (NS-LMXB) \gx in X-rays (IXPE, NICER, Nustar and INTEGRAL), optical (REM and LCO), near-infrared (REM), mid-infrared (VLT VISIR), and radio (ATCA). This…
High Energy Astrophysical Phenomena · Physics
2023-12-12
Sergio Fabiani , Fiamma Capitanio , Rosario Iaria , Juri Poutanen , Andrea Gnarini , Francesco Ursini , Ruben Farinelli , Anna Bobrikova , James F. Steiner , Jiri Svoboda , Alessio Anitra , Maria C. Baglio , Francesco Carotenuto , Melania Del Santo , Carlo Ferrigno , Fraser Lewis , David M. Russell , Thomas D. Russell , Jakob van den Eijnden , Massimo Cocchi , Alessandro Di Marco , Fabio La Monaca , Kuan Liu , John Rankin , Martin C. Weisskopf , Fei Xie , Stefano Bianchi , Luciano Burderi , Tiziana Di Salvo , Elise Egron , Giulia Illiano , Philip Kaaret , Giorgio Matt , Romana Mikušincová , Fabio Muleri , Alessandro Papitto , 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 , 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 , 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 , Andrea Marinucci , Alan P. Marscher , Herman L. Marshall , Francesco Massaro , 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 , Maura Pilia , 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 , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Kinwah Wu , Silvia Zane
We conduct a spectro-polarimetric study of the accreting X-ray pulsar Hercules X-1 using observations with the Imaging X-ray Polarimetry Explorer (IXPE). IXPE monitored the source in three different Epochs, sampling two Main-on and one…
High Energy Astrophysical Phenomena · Physics
2023-07-31
Akash Garg , Divya Rawat , Yash Bhargava , Mariano Méndez , Sudip Bhattacharyya
X Persei is a persistent low-luminosity X-ray pulsar of period of $\sim$835 s in a Be binary system. The field strength at the neutron star surface is not known precisely, but indirect signs indicate a magnetic field above $10^{13}$ G,…
High Energy Astrophysical Phenomena · Physics
2023-07-05
A. A. Mushtukov , S. S. Tsygankov , J. Poutanen , V. Doroshenko , A. Salganik , E. Costa , A. Di Marco , J. Heyl , F. La Monaca , A. A. Lutovinov , I. A. Mereminsky , A. Papitto , A. N. Semena , A. E. Shtykovsky , V. F. Suleimanov , S. V. Forsblom , D. González-Caniulef , C. Malacaria , R. A. Sunyaev , I. Agudo , L. A. Antonelli , M. Bachetti , L. Baldini , W. H. Baumgartner , R. Bellazzini , S. Bianchi , S. D. Bongiorno , R. Bonino , A. Brez , N. Bucciantini , F. Capitanio , S. Castellano , E. Cavazzuti , C. -T. Chen , S. Ciprini , A. De Rosa , E. Del Monte , L. Di Gesu , N. Di Lalla , I. Donnarumma , M. Dovčiak , S. R. Ehlert , T. Enoto , Y. Evangelista , S. Fabiani , R. Ferrazzoli , J. A. Garcia , S. Gunji , K. Hayashida , W. Iwakiri , S. G. Jorstad , P. Kaaret , V. Karas , F. Kislat , T. Kitaguchi , J. J. Kolodziejczak , H. Krawczynski , L. Latronico , I. Liodakis , S. Maldera , A. Manfreda , F. Marin , A. P. Marscher , H. L. Marshall , F. Massaro , G. Matt , I. Mitsuishi , T. Mizuno , F. Muleri , M. Negro , C. -Y. Ng , S. L. O'Dell , N. Omodei , C. Oppedisano , G. G. Pavlov , A. L. Peirson , M. Perri , M. Pesce-Rollins , P. -O. Petrucci , M. Pilia , A. Possenti , S. Puccetti , B. D. Ramsey , J. Rankin , A. Ratheesh , O. J. Roberts , R. W. Romani , C. Sgrò , P. Slane , P. Soffitta , G. Spandre , D. A. Swartz , T. Tamagawa , F. Tavecchio , R. Taverna , Y. Tawara , A. F. Tennant , N. E. Thomas , F. Tombesi , A. Trois , R. Turolla , J. Vink , M. C. Weisskopf , K. Wu , F. Xie , S. Zane
Weakly magnetized neutron stars in X-ray binaries show complex phenomenology with several spectral components that can be associated with the accretion disk, boundary and/or spreading layer, a corona, and a wind. Spectroscopic information…
High Energy Astrophysical Phenomena · Physics
2024-08-21
Anna Bobrikova , Sofia V. Forsblom , Alessandro Di Marco , Fabio La Monaca , Juri Poutanen , Mason Ng , Swati Ravi , Vladislav Loktev , Jari J. E. Kajava , Francesco Ursini , Alexandra Veledina , Daniele Rogantini , Tuomo Salmi , Stefano Bianchi , Fiamma Capitanio , Chris Done , Sergio Fabiani , Andrea Gnarini , Jeremy Heyl , Philip Kaaret , Giorgio Matt , Fabio Muleri , Anagha P. Nitindala , John Rankin , Martin C. Weisskopf , Ivan Agudo , Lucio A. Antonelli , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stephen D. Bongiorno , Raffaella Bonino , Alessandro Brez , Niccolo Bucciantini , Simone Castellano , Elisabetta Cavazzuti , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Laura Di Gesu , Niccolo Di Lalla , Immacolata Donnarumma , Victor Doroshenko , Michal Dovciak , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Wataru Iwakiri , Svetlana G. Jorstad , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Luca Latronico , Ioannis Liodakis , Simone Maldera , Alberto Manfreda , Frederic Marin , Andrea Marinucci , Alan P. Marscher , Herman L. Marshall , Francesco Massaro , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Michela Negro , Chi-Yung 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 , Ajay J. Ratheesh , Oliver Roberts , Roger W. Romani , Carmelo Sgro , 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 S. Tsygankov , Roberto Turolla , Jacco Vink , Kinwah Wu , Fei Xie , Silvia Zane
Over the next year, a new era of observations of compact objects in X-ray polarization will commence. Among the key targets for the upcoming Imaging X-ray Polarimetry Explorer mission, will be the magnetars 4U 0142+61 and 1RXS…
High Energy Astrophysical Phenomena · Physics
2022-06-22
Ilaria Caiazzo , Denis González-Caniulef , Jeremy Heyl , Rodrigo Fernández
After about 16 years since its first outburst, the transient neutron star low-mass X-ray binary XTE J1701$-$462 turned on again in September 2022, allowing for the first study of its X-ray polarimetric characteristics by a dedicated…
High Energy Astrophysical Phenomena · Physics
2023-06-21
Massimo Cocchi , Andrea Gnarini , Sergio Fabiani , Francesco Ursini , Juri Poutanen , Fiamma Capitanio , Anna Bobrikova , Ruben Farinelli , Adamantia Paizis , Lara Sidoli , Alexandra Veledina , Stefano Bianchi , Alessandro Di Marco , Adam Ingram , Jari J. E. Kajava , Fabio La Monaca , Giorgio Matt , Christian Malacaria , Romana Mikušincová , John Rankin , Silvia Zane , 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 , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monta , Laura Di Gesu , Niccolò Di Lalla , 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 , Philip Kaaret , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Luca Latronico , Ioannis Liodakis , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Alan P. Marscher , Herman L. Marshall , Francesco Massaro , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , Michela Negro , Chi-Yung 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 , 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 , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie