Related papers
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200 papers
Polarimetric properties of blazars allow us to put constraints on the acceleration mechanisms that fuel their powerful jets. By studying the multiwavelength polarimetric behaviour of high synchrotron peaked (HSP) and low synchrotron peaked…
High Energy Astrophysical Phenomena · Physics
2025-08-21
Sara Capecchiacci , Ioannis Liodakis , Riccardo Middei , Dawoon E. Kim , Laura Di Gesu , Ivan Agudo , Beatriz Agis-Gonzalez , Axel Arbet-Engels , Dmitry Blinov , Chien-Ting Chen , Steven R. Ehlert , Ephraim Gau , Lea Heckmann , Kun Hu , Svetlana G. Jorstad , Philip Kaaret , Pouya M. Kouch , Henric Krawczynski , Elina Lindfors , Frederic Marin , Alan P. Marscher , Ioannis Myserlis , Stephen L. O'Dell , Luigi Pacciani , David Paneque , Matteo Perri , Simonetta Puccetti , M. Lynne Saade , Fabrizio Tavecchio , Allyn F. Tennant , Efthalia Traianou , Martin C. Weisskopf , Kinwah Wu , Francisco Jose Aceituno , Giacomo Bonnoli , Victor Casanova , Gabriel Emery , Juan Escudero , Daniel Morcuende , Jorge Otero-Santos , Alfredo Sota , Vilppu Piirola , George A. Borman , Evgenia N. Kopatskaya , Elena G. Larionova , Daria A. Morozova , Ekaterina V. Shishkina , Sergey S. Savchenko , Andrey A. Vasilyev , Tatiana S. Grishina , Ivan S. Troitskiy , Alexey V. Zhovtan , Callum McCall , Helen E. Jermak , Iain A. Steele , Rumen Bachev , Anton Strigachev , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Sumie Tochihara , Takahiro Akai , Hiroshi Akitaya , Andrei V. Berdyugin , Masato Kagitani , Vadim Kravtsov , Juri Poutanen , Takeshi Sakanoi , Diego Alvarez-Ortega , Carolina Casadio , Sincheol Kang , Sang-Sung Lee , Sanghyun Kim , Whee Yeon Cheong , Hyeon-Woo Jeong , Chanwoo Song , Shan Li , Myeong-Seok Nam , Mark Gurwell , Garrett Keating , Ramprasad Rao , Emmanouil Angelakis , Alexander Kraus , Petra Benke , Lena Debbrecht , Julia Eich , Florian Eppel , Andrea Gokus , Steven Hammerich , Jonas Hessdorfer , Matthias Kadler , Dana Kirchner , Georgios Filippos Paraschos , Florian Rosch , Wladislaw Schulga
We report on the second observation of the radio-quiet active galactic nucleus (AGN) MCG-05-23-16 performed with the Imaging X-ray Polarimetry Explorer (IXPE). The observation started on 2022 November 6 for a net observing time of 640 ks,…
High Energy Astrophysical Phenomena · Physics
2023-05-18
D. Tagliacozzo , A. Marinucci , F. Ursini , G. Matt , S. Bianchi , L. Baldini , T. Barnouin , N. Cavero Rodriguez , A. De Rosa , L. Di Gesu , M. Dovciak , D. Harper , A. Ingram , V. Karas , D. E. Kim , H. Krawczynski , G. Madejski , F. Marin , R. Middei , H. L. Marshall , F. Muleri , C. Panagiotou , P. O. Petrucci , J. Podgorny , J. Poutanen , S. Puccetti , P. Soffitta , F. Tombesi , A. Veledina , W. Zhang , I. Agudo , L. A. Antonelli , M. Bachetti , W. H. Baumgartner , R. Bellazzini , S. D. Bongiorno , R. Bonino , A. Brez , N. Bucciantini , F. Capitanio , S. Castellano , E. Cavazzuti , C. T. Chen , S. Ciprini , E. Costa , E. Del Monte , N. Di Lalla , A. Di Marco , I. Donnarumma , V. Doroshenko , S. R. Ehlert , T. Enoto , Y. Evangelista , S. Fabiani , R. Ferrazzoli , J. A. Garcia , S. Gunji , J. Heyl , W. Iwakiri , S. G. Jorstad , P. Kaaret , F. Kislat , T. Kitaguchi , J. J. Kolodziejczak , F. La Monaca , L. Latronico , I. Liodakis , S. Maldera , A. Manfreda , A. P. Marscher , F. Massaro , I. Mitsuishi , T. Mizuno , M. Negro , C. Y. Ng , S. L. O'Dell , N. Omodei , C. Oppedisano , A. Papitto , G. G. Pavlov , A. L. Peirson , M. Perri , M. Pesce Rollins , M. Pilia , A. Possenti , B. D. Ramsey , J. Rankin , A. Ratheesh , O. J. Roberts , R. W. Romani , C. Sgrò , P. Slane , G. Spandre , D. A. Swartz , T. Tamagawa , F. Tavecchio , R. Taverna , Y. Tawara , A. F. Tennant , N. E. Thomas , A. Trois , S. S. Tsygankov , R. Turolla , J. Vink , M. C. Weisskopf , K. Wu , F. Xie , S. Zane
Polarimetric measurements, especially if extended at high energy, are expected to provide important insights into the mechanisms underlying the acceleration of relativistic particles in jets. In a previous work we have shown that the…
High Energy Astrophysical Phenomena · Physics
2020-09-09
F. Tavecchio , M. Landoni , L. Sironi , P. Coppi
We present the first first X-ray polarization measurements of a white dwarf, the intermediate polar EX Hya. We measured significant polarization only in the 2 -- 3 keV energy band with a polarization degree of 8 percent at a $3\sigma$…
Solar and Stellar Astrophysics · Physics
2025-10-02
Sean J. Gunderson , Swati Ravi , Herman L. Marshall , Dustin K. Swarm , Richard Ignace , Yael Naze , David P. Huenemoerder , Pragati Pradhan
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
We report on a comprehensive analysis of simultaneous X-ray polarimetric and spectral data of the bright atoll source GX 9+9 with the Imaging X-ray Polarimetry Explorer (IXPE) and NuSTAR. The source is significantly polarized in the 4--8…
High Energy Astrophysical Phenomena · Physics
2023-08-02
F. Ursini , R. Farinelli , A. Gnarini , J. Poutanen , S. Bianchi , F. Capitanio , A. Di Marco , S. Fabiani , F. La Monaca , C. Malacaria , G. Matt , R. Mikušincová , M. Cocchi , P. Kaaret , J. J. E. Kajava , M. Pilia , W. Zhang , I. Agudo , L. A. Antonelli , M. Bachetti , L. Baldini , W. H. Baumgartner , R. Bellazzini , S. D. Bongiorno , R. Bonino , A. Brez , N. Bucciantini , S. Castellano , E. Cavazzuti , C. -T. Chen , S. Ciprini , E. Costa , A. De Rosa , E. Del Monte , L. Di Gesu , N. Di Lalla , I. Donnarumma , V. Doroshenko , M. Dovčiak , S. R. Ehlert , T. Enoto , Y. Evangelista , R. Ferrazzoli , J. A. Garcia , S. Gunji , K. Hayashida , J. Heyl , W. Iwakiri , S. G. Jorstad , V. Karas , F. Kislat , T. Kitaguchi , J. J. Kolodziejczak , H. Krawczynski , L. Latronico , I. Liodakis , S. Maldera , A. Manfreda , F. Marin , A. Marinucci , A. P. Marscher , H. L. Marshall , F. Massaro , I. Mitsuishi , T. Mizuno , F. Muleri , M. Negro , C. -Y. Ng , S. L. O'Dell , N. Omodei , C. Oppedisano , A. Papitto , 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 , S. S. Tsygankov , R. Turolla , J. Vink , M. C. Weisskopf , K. Wu , F. Xie , S. Zane
The magnetic field conditions in astrophysical relativistic jets can be probed by multiwavelength polarimetry, which has been recently extended to X-rays. For example, one can track how the magnetic field changes in the flow of the…
High Energy Astrophysical Phenomena · Physics
2023-05-24
Laura Di Gesu , Herman L. Marshall , Steven R. Ehlert , Dawoon E. Kim , Immacolata Donnarumma , Fabrizio Tavecchio , Ioannis Liodakis , Sebastian Kiehlmann , Iván Agudo , Svetlana G. Jorstad , Fabio Muleri , Alan P. Marscher , Simonetta Puccetti , Riccardo Middei , Matteo Perri , Luigi Pacciani , Michela Negro , Roger W. Romani , Alessandro Di Marco , Dmitry Blinov , Ioakeim G. Bourbah , Evangelos Kontopodis , Nikos Mandarakas , Stylianos Romanopoulos , Raphael Skalidis , Anna Vervelaki , Carolina Casadio , Juan Escudero , Ioannis Myserlis , Mark Gurwell , Ramprasad Rao , Garrett Keating , Pouya M. Kouch , Elina Lindfors , Francisco Josè Aceituno , Maria I. Bernardos , Giacomo Bonnoli , Vìctor Casanova , Maya Garcìa-Comas , Beatriz Agìs-Gonzàlez , Cèsar Husillos , Alessandro Marchini , Alfredo Sota , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Hiroshi Akitaya , Sergey S. Savchenko , Andrey A. Vasilyev , Josè L. Gòmez , Lucio A. Antonelli , Thibault Barnouin , Raffaella Bonino , Elisabetta Cavazzuti , Luigi Costamante , Chien-Ting Chen , Nicolò Cibrario , Alessandra De Rosa , Federico Di Pierro , Manel Errando , Philip Kaaret , Vladimir Karas , Henric Krawczynski , Lindsey Lisalda , Grzegorz Madejski , Christian Malacaria , Frédéric Marin , Andrea Marinucci , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Stephen L. O'Dell , Alessandro Paggi , Abel L. Peirson , Pierre-Olivier Petrucci , Brian D. Ramsey , Allyn F. Tennant , Kinwah Wu , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Alessandro Brez , Niccolò Bucciantini , Fiamma Capitanio , Simone Castellano , Stefano Ciprini , Enrico Costa , Ettore Del Monte , Niccolò Di Lalla , Victor Doroshenko , Michal Dovčiak , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , C. -Y. Ng , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Melissa Pesce-Rollins , Maura Pilia , Andrea Possenti , Juri Poutanen , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Carmelo Sgrò , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas A. Swartz , Toru Tamagawa , Roberto Taverna , Yuzuru Tawara , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Fei Xie , Silvia Zane
We present X-ray polarimetry observations from the Imaging X-ray Polarimetry Explorer (IXPE) of three low spectral peak and one intermediate spectral peak blazars, namely 3C 273, 3C 279, 3C 454.3, and S5 0716+714. For none of these objects…
High Energy Astrophysical Phenomena · Physics
2023-10-23
Herman L. Marshall , Ioannis Liodakis , Alan P. Marscher , Niccolo Di Lalla , Svetlana G. Jorstad , Dawoon E. Kim , Riccardo Middei , Michela Negro , Nicola Omodei , Abel L. Peirson , Matteo Perri , Simonetta Puccetti , Ivan Agudo , Giacomo Bonnoli , Andrei V. Berdyugin , Elisabetta Cavazzuti , Nicole Rodriguez Cavero , Immacolata Donnarumma , Laura Di Gesu , Jenni Jormanainen , Henric Krawczynski , Elina Lindfors , Frederic Marin , Francesco Massaro , Luigi Pacciani , Juri Poutanen , Fabrizio Tavecchio , Pouya M. Kouch , Francisco Jose Aceituno , Maria I. Bernardos , Giacomo Bonnoli , Victor Casanova , Maya Garcia-Comas , Beatriz Agis-Gonzalez , Cesar Husillos , Alessandro Marchini , Alfredo Sota , Dmitry Blinov , Ioakeim G. Bourbah , Sebastian Kielhmann , Evangelos Kontopodis , Nikos Mandarakas , Stylianos Romanopoulos , Raphael Skalidis , Anna Vervelaki , George A. Borman , Evgenia N. Kopatskaya , Elena G. Larionova , Daria A. Morozova , Sergey S. Savchenko , Andrey A. Vasilyev , Alexey V. Zhovtan , Carolina Casadio , Juan Escudero , Joana Kramer , Ioannis Myserlis , Efthalia Trainou , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Hiroshi Akitaya , Joseph R. Masiero , Dimitri Mawet , Maxwell A. Millar-Blanchaer , Georgia V. Panopoulou , Samaporn Tinyanont , Andrei V. Berdyugin , Masato Kagitani , Vadim Kravtsov , Takeshi Sakanoi , 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 , Chen-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Laura Di Gesu , Alessandro Di Marco , Immacolata Donnarumma , Victor Doroshenko , Michal Dovvciak , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Philip Kaaret , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Frederic Marin , Andrea Marinucci , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , C. -Y. Ng , Stephen L. ODell , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Juri Poutanen , 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 , 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 , Silvia Zane
Mapping the circumnuclear regions of the Circinus galaxy with the Imaging X-ray Polarimetry Explorer
We report on the Imaging X-ray Polarimetry Explorer (IXPE) observation of the closest and X-ray brightest Compton-thick active galactic nucleus (AGN), the Circinus galaxy. We find the source to be significantly polarized in the 2--6 keV…
High Energy Astrophysical Phenomena · Physics
2022-12-21
F. Ursini , A. Marinucci , G. Matt , S. Bianchi , F. Marin , H. L. Marshall , R. Middei , J. Poutanen , D. Rogantini , A. De Rosa , L. Di Gesu , J. A. García , A. Ingram , D. E. Kim , H. Krawczynski , S. Puccetti , P. Soffitta , J. Svoboda , F. Tombesi , M. C. Weisskopf , T. Barnouin , M. Perri , J. Podgorny , A. Ratheesh , A. Zaino , I. Agudo , L. A. Antonelli , M. Bachetti , L. Baldini , W. H. Baumgartner , R. Bellazzini , S. D. Bongiorno , R. Bonino , A. Brez , N. Bucciantini , F. Capitanio , S. Castellano , E. Cavazzuti , S. Ciprini , E. Costa , E. Del Monte , N. Di Lalla , A. Di Marco , I. Donnarumma , V. Doroshenko , M. Dovčiak , S. R. Ehlert , T. Enoto , Y. Evangelista , S. Fabiani , R. Ferrazzoli , S. Gunji , J. Heyl , W. Iwakiri , S. G. Jorstad , V. Karas , T. Kitaguchi , J. J. Kolodziejczak , F. La Monaca , L. Latronico , I. Liodakis , S. Maldera , A. Manfreda , A. P. Marscher , I. Mitsuishi , T. Mizuno , F. Muleri , C. Y. Ng , S. L. O'Dell , N. Omodei , C. Oppedisano , A. Papitto , G. G. Pavlov , A. L. Peirson , M. Pesce-Rollins , P. -O. Petrucci , M. Pilia , A. Possenti , B. D. Ramsey , J. Rankin , R. W. Romani , C. Sgrò , P. Slane , G. Spandre , T. Tamagawa , F. Tavecchio , R. Taverna , Y. Tawara , A. F. Tennant , N. E. Thomas , A. Trois , S. S. Tsygankov , R. Turolla , J. Vink , K. Wu , F. Xie , S. Zane
XPOL, the first correlation polarimeter at a large millimeter telescope, uses a flexible digital correlator to measure all four Stokes parameters simultaneously, i.e. the total power I, the linear polarization components Q and U, and the…
Astrophysics · Physics
2009-11-13
Clemens Thum , Helmut Wiesemeyer , Gabriel Paubert , Santiago Navarro , David Morris
An optimal estimate for Stokes parameters is derived for the situation in X-ray astronomy where the instrument has a modulation factor that varies significantly with energy but the signals are very weak or mildly polarized. For such…
Sco X-1 has been the subject of many multi-wavelength studies in the past, being the brightest persistent extra-solar X-ray source ever observed. Here we revisit Sco X-1 with simultaneous short cadence Kepler optical photometry and MAXI…
High Energy Astrophysical Phenomena · Physics
2015-07-15
S. Scaringi , T. J. Maccarone , R. I. Hynes , E. Koerding , G. Ponti , C. Knigge , C. T. Britt , H. van Winckel
Weakly magnetized neutron stars (WMNS) are complicated sources with challenging phenomenology. For decades, they have been studied via spectrometry and timing. It has been established that the spectrum of WMNSs consists of several…
High Energy Astrophysical Phenomena · Physics
2024-08-28
Anna Bobrikova , Alessandro Di Marco , Fabio La Monaca , Juri Poutanen , Sofia V. Forsblom , Vladislav Loktev
Correlations between 1-10 Hz quasi-periodic oscillations (QPOs) and spectral power law index have been reported for black hole (BH) candidate sources and one neutron star source, 4U 1728-34. An examination of QPO frequency and index…
We report the first $> 99\%$ confidence detection of X-ray polarization in BL Lacertae. During a recent X-ray/$\gamma$-ray outburst, a 287 ksec observation (2022 November 27-30) was taken using the Imaging X-ray Polarimetry Explorer ({\it…
High Energy Astrophysical Phenomena · Physics
2023-07-04
Abel L. Peirson , Michela Negro , Ioannis Liodakis , Riccardo Middei , Dawoon E. Kim , Alan P. Marscher , Herman L. Marshall , Luigi Pacciani , Roger W. Romani , Kinwah Wu , Alessandro Di Marco , Niccolo Di Lalla , Nicola Omodei , Svetlana G. Jorstad , Ivan Agudo , Pouya M. Kouch , Elina Lindfors , Francisco Jose Aceituno , Maria I. Bernardos , Giacomo Bonnoli , Victor Casanova , Maya Garcia-Comas , Beatriz Agis-Gonzalez , Cesar Husillos , Alessandro Marchini , Alfredo Sota , Carolina Casadio , Juan Escudero , Ioannis Myserlis , Albrecht Sievers , Mark Gurwell , Ramprasad Rao , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Hiroshi Akitaya , Whee Yeon Cheong , Hyeon-Woo Jeong , Sincheol Kang , Sang-Hyun Kim , Sang-Sung Lee , Emmanouil Angelakis , Alexander Kraus , Nicolo Cibrario , Immacolata Donnarumma , Juri Poutanen , Fabrizio Tavecchio , 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 , Victor Doroshenko , Michal Dovciak , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Philip Kaaret , Vladimir Karas , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Grzegorz Madejski , Simone Maldera , Alberto Manfreda , Frederic Marin , Andrea Marinucci , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Fabio Muleri , C. -Y. Ng , Stephen L. O'Dell , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Matteo Perri , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Carmelo Sgro , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas A. Swartz , Toru Tamagawa , Roberto Taverna , Yuzuru Tawara , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Fei Xie , Silvia Zane
We report the discovery of X-ray polarization from the X-ray-bright filament. G0.13-0.11 in the Galactic center (GC) region. This filament features a bright, hard X-ray source that is most plausibly a pulsar wind nebula (PWN) and an…
High Energy Astrophysical Phenomena · Physics
2024-05-29
Eugene Churazov , Ildar Khabibullin , Thibault Barnouin , Niccolò Bucciantini , Enrico Costa , Laura Di Gesu , Alessandro Di Marco , Riccardo Ferrazzoli , William Forman , Philip Kaaret , Dawoon E. Kim , Jeffery J. Kolodziejczak , Ralph Kraft , Frédéric Marin , Giorgio Matt , Michela Negro , Roger W. Romani , Stefano Silvestri , Paolo Soffitta , Rashid Sunyaev , Jiri Svoboda , Alexey Vikhlinin , Martin C. Weisskopf , Fei Xie , 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 , Chien-Ting Chen , Stefano Ciprini , Alessandra De Rosa , Ettore Del Monte , Niccolò Di Lalla , Immacolata Donnarumma , Victor Doroshenko , Michal Dovčiak , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Javier A. García , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Svetlana G. Jorstad , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Ioannis Liodakis , Simone Maldera , Alberto Manfreda , Andrea Marinucci , Alan P. Marscher , Herman L. Marshall , Francesco Massaro , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , 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 , Juri Poutanen , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Carmelo Sgrò , Patrick Slane , 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 have analyzed a long-term database for Sco X-1 obtained with the telescope IBIS onboard the INTEGRAL satellite in order to study the hard X-ray behavior of Sco X-1 from 20 up to 200 keV. Besides the data used for producing of the…
In many polarimetry applications, including observations in the X-ray band, the measurement of a polarization signal can be reduced to the detection and quantification of a deviation from uniformity of a distribution of measured angles. We…
Instrumentation and Methods for Astrophysics · Physics
2015-06-16
Tod E. Strohmayer , Tim R. Kallman
We report on the first observation of a radio-quiet Active Galactic Nucleus (AGN) using polarized X-rays: the Seyfert 1.9 galaxy MCG-05-23-16. This source was pointed with the Imaging X-ray Polarimetry Explorer (IXPE) starting on May 14,…
High Energy Astrophysical Phenomena · Physics
2022-10-05
A. Marinucci , F. Muleri , M. Dovčiak , S. Bianchi , F. Marin , G. Matt , F. Ursini , R. Middei , H. L. Marshall , L. Baldini , T. Barnouin , N. Cavero Rodriguez , A. De Rosa , L. Di Gesu , D. Harper , A. Ingram , V. Karas , H. Krawczynski , G. Madejski , C. Panagiotou , P. O. Petrucci , J. Podgorny , S. Puccetti , F. Tombesi , A. Veledina , W. Zhang , I. Agudo , L. A. Antonelli , M. Bachetti , W. H. Baumgartner , R. Bellazzini , S. D. Bongiorno , R. Bonino , A. Brez , N. Bucciantini , F. Capitanio , S. Castellano , E. Cavazzuti , S. Ciprini , E. Costa , E. Del Monte , N. Di Lalla , A. Di Marco , I. Donnarumma , V. Doroshenko , S. R. Ehlert , T. Enoto , Y. Evangelista , S. Fabiani , R. Ferrazzoli , J. A. Garcia , S. Gunji , K. Hayashida , J. Heyl , W. Iwakiri , S. G. Jorstad , T. Kitaguchi , J. J. Kolodziejczak , F. La Monaca , L. Latronico , I. Liodakis , S. Maldera , A. Manfreda , A. P. Marscher , I. Mitsuishi , T. Mizuno , C. -Y. Ng , S. L. O'Dell , N. Omodei , C. Oppedisano , A. Papitto , G. G. Pavlov , A. L. Peirson , M. Perri , M. Pesce-Rollins , M. Pilia , A. Possenti , J. Poutanen , B. D. Ramsey , J. Rankin , A. Ratheesh , R. W. Romani , C. Sgrò , P. Slane , P. Soffitta , G. Spandre , T. Tamagawa , F. Tavecchio , R. Taverna , Y. Tawara , A. F. Tennant , N. E. Thomas , A. Trois , S. S. Tsygankov , R. Turolla , J. Vink , M. C. Weisskopf , K. Wu , F. Xie , S. Zane
We present polarization observations of the radio emitting magnetar AXP J1810-197. Using simultaneous multi-frequency observations performed at 1.4, 4.9 and 8.4 GHz, we obtained polarization information for single pulses and the average…
Astrophysics · Physics
2008-11-26
M. Kramer , B. W. Stappers , A. Jessner , A. G. Lyne , C. A. Jordan