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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
Particle acceleration mechanisms in supermassive black hole jets, such as shock acceleration, magnetic reconnection, and turbulence, are expected to have observable signatures in the multi-wavelength polarization properties of blazars. The…
High Energy Astrophysical Phenomena · Physics
2022-10-26
Laura Di Gesu , Immacolata Donnarumma , Fabrizio Tavecchio , Ivan Agudo , Thibault Barnounin , Nicolò Cibrario , Niccolò Di Lalla , Alessandro Di Marco , Juan Escudero , Manel Errando , Svetlana G. Jorstad , Dawoon Kim , Pouya M. Kouch , Elina Lindfors , Ioannis Liodakis , Grzegorz Madejski , Herman L. Marshall , Alan P. Marscher , Riccardo Middei , Fabio Muleri , Ioannis Myserlis , Michela Negro , Nicola Omodei , Luigi Pacciani , Alessandro Paggi , Matteo Perri , Simonetta Puccetti , 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 , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , 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 , Vladimir Karas , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizuno , C. -Y. Ng , Stephen L. O'Dell , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel L. Peirson , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Juri Poutanen , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Roger W. Romani , Carmelo Sgrò , Patrick Slane , Paolo Soffitta , Gloria Spandre , Toru Tamagawa , Roberto Taverna , Yuzuru Tawara , Allyn F. Tennant , Nicolas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane
X-ray polarization is a unique new probe of the particle acceleration in astrophysical jets made possible through the Imaging X-ray Polarimetry Explorer. Here we report on the first dense X-ray polarization monitoring campaign on the blazar…
High Energy Astrophysical Phenomena · Physics
2024-10-29
W. Peter Maksym , Ioannis Liodakis , M. Lynne Saade , Dawoon E. Kim , Riccardo Middei , Laura Di Gesu , Sebastian Kiehlmann , Gabriele Matzeu , Iván Agudo , Alan P. Marscher , Steven R. Ehlert , Svetlana G. Jorstad , Philip Kaaret , Herman L. Marshall , Luigi Pacciani , Matteo Perri , Simonetta Puccetti , Pouya M. Kouch , Elina Lindfors , Francisco José Aceituno , Giacomo Bonnoli , Víctor Casanova , Juan Escudero , Beatriz Agís-González , César Husillos , Daniel Morcuende , Jorge Otero-Santos , Alfredo Sota , Vilppu Piirola , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Hiroshi Akitaya , Callum McCall , Helen E. Jermak , Iain A. Steele , George A. Borman , Tatiana S. Grishina , Vladimir A. Hagen-Thorn , Evgenia N. Kopatskaya , Elena G. Larionova , Daria A. Morozova , Sergey S. Savchenko , Ekaterina V. Shishkina , Ivan S. Troitskiy , Yulia V. Troitskaya , Andrey A. Vasilyev , Alexey V. Zhovtan , Ioannis Myserlis , Mark Gurwell , Garrett Keating , Ramprasad Rao , Colt Pauley , Emmanouil Angelakis , Alexander Kraus , Andrei V. Berdyugin , Masato Kagitani , Vadim Kravtsov , Juri Poutanen , Takeshi Sakanoi , Sincheol Kang , Sang-Sung Lee , Sang-Hyun Kim , Whee Yeon Cheong , Hyeon-Woo Jeong , Chanwoo Song , Dmitry Blinov , Elena Shablovinskaya , Lucio Angelo Antonelli , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Raffaella Bonino , Alessandro Brez , Niccoló Bucciantini , Fiamma Capitanio , Simone Castellano , Elisabetta Cavazzuti , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Niccoló Di Lalla , Alessandro Di Marco , Immacolata Donnarumma , Victor Doroshenko , Michal Dovčiak , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Fabio Muleri , Michela Negro , C. -Y. Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel Lawrence Peirson , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , 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 S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane
X-ray polarimetry, sometimes alone, and sometimes coupled to spectral and temporal variability measurements and to imaging, allows a wealth of physical phenomena in astrophysics to be studied. X-ray polarimetry investigates the acceleration…
High Energy Astrophysical Phenomena · Physics
2016-08-11
Paolo Soffitta , Xavier Barcons , Ronaldo Bellazzini , João Braga , Enrico Costa , George W. Fraser , Szymon Gburek , Juhani Huovelin , Giorgio Matt , Mark Pearce , Juri Poutanen , Victor Reglero , Andrea Santangelo , Rashid A. Sunyaev , Gianpiero Tagliaferri , Martin Weisskopf , Roberto Aloisio , Elena Amato , Primo Attiná , Magnus Axelsson , Luca Baldini , Stefano Basso , Stefano Bianchi , Pasquale Blasi , Johan Bregeon , Alessandro Brez , Niccoló Bucciantini , Luciano Burderi , Vadim Burwitz , Piergiorgio Casella , Eugene Churazov , Marta Civitani , Stefano Covino , Rui Miguel Curado da Silva , Giancarlo Cusumano , Mauro Dadina , Flavio D'Amico , Alessandra De Rosa , Sergio Di Cosimo , Giuseppe Di Persio , Tiziana Di Salvo , Michal Dovciak , Ronald Elsner , Chris J. Eyles , Andrew C. Fabian , Sergio Fabiani , Hua Feng , Salvatore Giarrusso , René W. Goosmann , Paola Grandi , Nicolas Grosso , Gianluca Israel , Miranda Jackson , Philip Kaaret , Vladimir Karas , Michael Kuss , Dong Lai , Giovanni La Rosa , Josefin Larsson , Stefan Larsson , Luca Latronico , Antonio Maggio , Jorge Maia , Frédéric Marin , Marco Maria Massai , Teresa Mineo , Massimo Minuti , Elena Moretti , Fabio Muleri , Stephen L. O'Dell , Giovanni Pareschi , Giovanni Peres , Melissa Pesce , Pierre-Olivier Petrucci , Michele Pinchera , Delphine Porquet , Brian Ramsey , Nanda Rea , Fabio Reale , Juana Maria Rodrigo , Agata Różańska , Alda Rubini , Pawel Rudawy , Felix Ryde , Marco Salvati , Valdivino Alexandre de Santiago Júnior , Sergey Sazonov , Carmelo Sgró , Eric Silver , Gloria Spandre , Daniele Spiga , Luigi Stella , Toru Tamagawa , Francesco Tamborra , Fabrizio Tavecchio , Teresa Teixeira Dias , Matthew van Adelsberg , Kinwah Wu , Silvia Zane
The polarization of X-ray synchrotron emission in blazars directly probes the magnetic field geometry and particle acceleration processes in relativistic jets. We use particle-in-cell simulations of magnetic reconnection and magnetized…
High Energy Astrophysical Phenomena · Physics
2025-12-25
Benjamin de Jonge , Haocheng Zhang , Manel Errando , Andrea Gokus , Pazit Rabinowitz
The X-ray polarization observations made possible with the Imaging X-ray Polarimetry Explorer (IXPE) offer new ways of probing high-energy emission processes in astrophysical jets from blazars. Here we report on the first X-ray polarization…
High Energy Astrophysical Phenomena · Physics
2025-03-12
Pouya M. Kouch , Ioannis Liodakis , Francesco Fenu , Haocheng Zhang , Stella Boula , Riccardo Middei , Laura Di Gesu , Georgios F. Paraschos , Iván Agudo , Svetlana G. Jorstad , Elina Lindfors , Alan P. Marscher , Henric Krawczynski , Michela Negro , Kun Hu , Dawoon E. Kim , Elisabetta Cavazzuti , Manel Errando , Dmitry Blinov , Anastasia Gourni , Sebastian Kiehlmann , Angelos Kourtidis , Nikos Mandarakas , Nikolaos Triantafyllou , Anna Vervelaki , George A. Borman , Evgenia N. Kopatskaya , Elena G. Larionova , Daria A. Morozova , Sergey S. Savchenko , Andrey A. Vasilyev , Ivan S. Troitskiy , Tatiana S. Grishina , Alexey V. Zhovtan , Francisco José Aceituno , Giacomo Bonnoli , Víctor Casanova , Juan Escudero , Beatriz Agís-González , César Husillos , Jorge Otero-Santos , Vilppu Piirola , Alfredo Sota , Ioannis Myserlis , Mark Gurwell , Garrett K. Keating , Ramprasad Rao , Emmanouil Angelakis , Alexander Kraus , Lucio Angelo 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 , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Niccolò 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 , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Philip Kaaret , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Herman L. Marshall , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , Chi-Yung Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel Lawrence 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 , 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 , Roger W. Romani , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane
X-ray polarization should provide new probes of magnetic field geometry and acceleration physics near the base of blazar jets, but near-future missions will have limited sensitivity. We thus use existing lower energy data and X-ray…
The launch of the Imaging X-ray Polarimetry Explorer (IXPE), the first space-based polarimeter since 1978, offers a two order of magnitude improvement to the measurement of X-ray polarisation than its predecessor OSO-8, offering…
High Energy Astrophysical Phenomena · Physics
2025-07-22
Melissa Ewing , Adam Ingram , John Rankin , Fabio Muleri
Variability can be the pathway to understanding the physical processes in astrophysical jets, however, the high-cadence observations required to test particle acceleration models are still missing. Here we report on the first attempt to…
High Energy Astrophysical Phenomena · Physics
2024-09-18
Ioannis Liodakis , Sebastian Kiehlmann , Alan P. Marscher , Haocheng Zhang , Dmitry Blinov , Svetlana G. Jorstad , Iván Agudo , Erika Benítez , Andrei Berdyugin , Giacomo Bonnoli , Carolina Casadio , Chien-Ting Chen , Wen-Ping Chen , Steven R. Ehlert , Juan Escudero , Tatiana S. Grishina , David Hiriart , Angela Hsu , Ryo Imazawa , Helen E. Jermak , Jincen Jose , Philip Kaaret , Evgenia N. Kopatskaya , Bhavana Lalchand , Elena G. Larionova , Elina Lindfors , José M. López , Callum McCall , Daria A. Morozova , Efthymios Palaiologou , Shivangi Pandey , Juri Poutanen , Suvendu Rakshit , Pablo Reig , Mahito Sasada , Sergey S. Savchenko , Elena Shablovinskaya , Sharma Neha , Manisha Shrestha , Iain A. Steele , Ivan S. Troitskiy , Yulia V. Troitskaya , Makoto Uemura , Andrey A. Vasilyev , Zachary Weaver , Klaas Wiersema , Martin C. Weisskopf
X-ray polarimetry promises us an unprecedented look at the structure of magnetic fields and on the processes at the base of acceleration of particles up to ultrarelativistic energies in relativistic jets. Crucial pieces of information are…
Time-variable polarization is an extremely valuable observational tool to probe the dynamical physical conditions of blazar jets. Since 2008, we have been monitoring the flux and linear polarization of a sample of gamma-ray bright blazars…
X-ray polarization observations of pulsar wind nebulae (PWNe) provide crucial insights into magnetic field structures and particle acceleration mechanisms. While the Imaging X-ray Polarimetry Explorer (IXPE) has made significant…
High Energy Astrophysical Phenomena · Physics
2026-03-24
Kuan Liu , Fei Xie , Ming-Yu Ge , Wei Deng , En-Wei Liang
Launched on December 9, 2021, the Imaging X-ray Polarimetry Explorer (IXPE) is the first imaging polarimeter ever flown, providing sensitivity in the 2--8 keV range, and during the 2-year initial phase of the mission will sample tens of…
The dissipation of energy flux in blazar jets plays a key role in the acceleration of relativistic particles. Two possibilities are commonly considered for the dissipation processes, magnetic reconnection -- possibly triggered by…
High Energy Astrophysical Phenomena · Physics
2018-06-13
F. Tavecchio , M. Landoni , L. Sironi , P. Coppi
The blazar Markarian 501 (Mrk 501) was observed on three occasions over a 4-month period between 2022 March and 2022 July with the Imaging X-ray Polarimetry Explorer (IXPE). In this paper, we report for the first time on the third IXPE…
High Energy Astrophysical Phenomena · Physics
2025-07-11
L. Lisalda , E. Gau , H. Krawczynski , F. Tavecchio , I. Liodakis , A. Gokus , N. Rodriguez Cavero , M. Nowak , M. Negro , R. Middei , M. Perri , S. Puccetti , S. G. Jorstad , I. Agudo , A. P. Marscher , B. Agís-González , A. V. Berdyugin , M. I. Bernardos , D. Blinov , G. Bonnoli , G. A. Borman , I. G. Bourbah , C. Casadio , V. Casanova , A. J. Castro-Tirado , E. Fernández-García , M. García-Comas , T. S. Grishina , P. Hakala , T. Hovatta , Y. D. Hu , C. Husillos , J. Escudero , J. Jormanainen , F. José Aceituno , M. Kagitani , S. Kiehlmann , E. Kontopodis , E. N. Kopatskaya , P. M. Kouch , V. Kravtsov , A. Lähteenmäki , E. G. Larionova , E. Lindfors , N. Mandarakas , A. Marchini , J. R. Masiero , D. Mawet , W. Max-Moerbeck , D. A. Morozova , I. Myserlis , K. Nilsson , G. V. Panopoulou , T. J. Pearson , A. C. S. Readhead , R. Reeves , S. Romanopoulos , T. Sakanoi , Q. Salomé , S. S. Savchenko , R. Skalidis , A. Sota , I. Syrjärinne , S. Tinyanont , M. Tornikoski , Yu. V. Troitskaya , I. S. Troitskiy , A. A. Vasilyev , A. Vervelaki , A. V. Zhovtan , 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. Chen , S. Ciprini , E. Costa , A. De Rosa , E. Del Monte , L. Di Gesu , N. Di Lalla , A. Di Marco , I. Donnarumma , V. Doroshenko , M. Dovčiak , S. R. Ehlert , T. Enoto , Y. Evangelista , S. Fabiani , R. Ferrazzoli , J. A. Garcia , S. Gunji , M. Gurwell , K. Hayashida , J. Heyl , W. Iwakiri , P. Kaaret , V. Karas , G. Keating , F. Kislat , T. Kitaguchi , J. J. Kolodziejczak , F. La Monaca , L. Latronico , S. Maldera , A. Manfreda , F. Marin , A. Marinucci , H. L. Marshall , F. Massaro , G. Matt , I. Mitsuishi , T. Mizuno , F. Muleri , C. Ng , S. L. O'Dell , N. Omodei , C. Oppedisano , A. Papitto , G. G. Pavlov , A. L. Peirson , M. Pesce-Rollins , P. Petrucci , M. Pilia , A. Possenti , J. Poutanen , B. D. Ramsey , J. Rankin , R. Rao , A. Ratheesh , O. J. Roberts , R. W. Romani , C. Sgrò , P. Slane , P. Soffitta , G. Spandre , D. A. Swartz , T. Tamagawa , 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
Multifrequency polarimetry, recently extended to the X-ray band thanks to the Imaging X-ray Polarimetry Explorer (IXPE) satellite, is an essential tool for understanding blazar jets. High-frequency-peaked BL Lacs (HBLs) and extreme…
High Energy Astrophysical Phenomena · Physics
2025-07-23
Alberto Sciaccaluga , Agnese Costa , Fabrizio Tavecchio , Gianluigi Bodo , Paolo Coppi , Stella Boula
The lower energy peak of the spectral energy distribution of blazars has commonly been ascribed to synchrotron radiation from relativistic particles in the jets. Despite the consensus regarding jet emission processes, the particle…
High Energy Astrophysical Phenomena · Physics
2023-08-02
Riccardo Middei , Matteo Perri , Simonetta Puccetti , Ioannis Liodakis , Laura Di Gesu , Alan P. Marscher , Nicole Rodriguez Cavero , Fabrizio Tavecchio , Immacolata Donnarumma , Marco Laurenti , Svetlana G. Jorstad , Iván Agudo , Herman L. Marshall , Luigi Pacciani , Dawoon E. Kim , Francisco José Aceituno , Giacomo Bonnoli , Víctor Casanova , Beatriz Agís-González , Alfredo Sota , Carolina Casadio , Juan Escudero , Ioannis Myserlis , Albrecht Sievers , Pouya M. Kouch , Elina Lindfors , Mark Gurwell , Garrett K. Keating , Ramprasad Rao , Sincheol Kang , Sang-Sung Lee , Sang-Hyun Kim , Whee Yeon Cheong , Hyeon-Woo Jeong , Emmanouil Angelakis , Alexander Kraus , 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 , Niccolò Di Lalla , Alessandro Di Marco , Victor Doroshenko , Michal Dovčiak , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. García , 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 , Frédéric Marin , Andrea Marinucci , 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 , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Juri Poutanen , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , Carmelo Sgrò , 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
We report the Imaging X-ray Polarimetry Explorer (IXPE) polarimetric and simultaneous multiwavelength observations of the high-energy-peaked BL Lacertae (HBL) object 1ES 1959+650, performed in 2022 October and 2023 August. In 2022 October…
High Energy Astrophysical Phenomena · Physics
2025-03-28
Luigi Pacciani , Dawoon E. Kim , Riccardo Middei , Herman L. Marshall , Alan P. Marscher , Ioannis Liodakis , Iván Agudo , Svetlana G. Jorstad , Juri Poutanen , Manel Errando , Laura Di Gesu , Michela Negro , Fabrizio Tavecchio , Kinwah Wu , Chien-Ting Chen , Fabio Muleri , Lucio Angelo Antonelli , Immacolata Donnarumma , Steven R. Ehlert , Francesco Massaro , Stephen L. O'Dell , Matteo Perri , Simonetta Puccetti , Giacomo Bonnoli , Pouya M. Kouch , Emmanouil Angelakis , Alexander Kraus , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Raffaella Bonino , Alessandro Brez , Niccoló Bucciantini , Fiamma Capitanio , Simone Castellano , Elisabetta Cavazzuti , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Niccoló Di Lalla , Alessandro Di Marco , Victor Doroshenko , Michal Dovčiak , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Jeremy Heyl , Wataru Iwakiri , Philip Kaaret , Vladimir Karas , Fabian Kislat , Jeffery J. Kolodziejczak , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Giorgio Matt , Tsunefumi Mizuno , C. -Y. Ng , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel Lawrence Peirson , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , Carmelo Sgró , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas A. Swartz , Toru Tamagawa , Roberto Taverna , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Fei Xie , Silvia Zane
We report the X-ray polarization properties of the high-synchrotron-peaked (HSP) blazar PKS 2155$-$304 based on observations with the Imaging X-ray Polarimetry Explorer (IXPE). We observed the source between Oct 27 and Nov 7, 2023. We also…
High Energy Astrophysical Phenomena · Physics
2024-09-11
Pouya M. Kouch , Ioannis Liodakis , Riccardo Middei , Dawoon E. Kim , Fabrizio Tavecchio , Alan P. Marscher , Herman L. Marshall , Steven R. Ehlert , Laura Di Gesu , Svetlana G. Jorstad , Iván Agudo , Grzegorz M. Madejski , Roger W. Romani , Manel Errando , Elina Lindfors , Kari Nilsson , Ella Toppari , Stephen B. Potter , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Hiroshi Akitaya , Callum McCall , Helen E. Jermak , Iain A. Steele , Ioannis Myserlis , Mark Gurwell , Garrett K. Keating , Ramprasad Rao , Sincheol Kang , Sang-Sung Lee , Sang-Hyun Kim , Whee Yeon Cheong , Hyeon-Woo Jeong , Emmanouil Angelakis , Alexander Kraus , Francisco José Aceituno , Giacomo Bonnoli , Víctor Casanova , Juan Escudero , Beatriz Agís-González , César Husillos , Daniel Morcuende , Jorge Otero-Santos , Alfredo Sota , Rumen Bachev , Lucio Angelo 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 , Niccolò Di Lalla , Alessandro Di Marco , Immacolata Donnarumma , 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 , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Fabio Muleri , Michela Negro , C. -Y. Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel Lawrence 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 , 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
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