Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.16868 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913729626505216 |
|---|---|
| author | Kouch, Pouya M. Liodakis, Ioannis Fenu, Francesco Zhang, Haocheng Boula, Stella Middei, Riccardo Di Gesu, Laura Paraschos, Georgios F. Agudo, Iván Jorstad, Svetlana G. Lindfors, Elina Marscher, Alan P. Krawczynski, Henric Negro, Michela Hu, Kun Kim, Dawoon E. Cavazzuti, Elisabetta Errando, Manel Blinov, Dmitry Gourni, Anastasia Kiehlmann, Sebastian Kourtidis, Angelos Mandarakas, Nikos Triantafyllou, Nikolaos Vervelaki, Anna Borman, George A. Kopatskaya, Evgenia N. Larionova, Elena G. Morozova, Daria A. Savchenko, Sergey S. Vasilyev, Andrey A. Troitskiy, Ivan S. Grishina, Tatiana S. Zhovtan, Alexey V. Aceituno, Francisco José Bonnoli, Giacomo Casanova, Víctor Escudero, Juan Agís-González, Beatriz Husillos, César Otero-Santos, Jorge Piirola, Vilppu Sota, Alfredo Myserlis, Ioannis Gurwell, Mark Keating, Garrett K. Rao, Ramprasad Angelakis, Emmanouil Kraus, Alexander Antonelli, Lucio Angelo Bachetti, Matteo Baldini, Luca Baumgartner, Wayne H. Bellazzini, Ronaldo Bianchi, Stefano Bongiorno, Stephen D. Bonino, Raffaella Brez, Alessandro Bucciantini, Niccolò Capitanio, Fiamma Castellano, Simone Chen, Chien-Ting Ciprini, Stefano Costa, Enrico De Rosa, Alessandra Del Monte, Ettore Di Lalla, Niccolò Di Marco, Alessandro Donnarumma, Immacolata Doroshenko, Victor Dovčiak, Michal Ehlert, Steven R. Enoto, Teruaki Evangelista, Yuri Fabiani, Sergio Ferrazzoli, Riccardo Garcia, Javier A. Gunji, Shuichi Hayashida, Kiyoshi Heyl, Jeremy Iwakiri, Wataru Kaaret, Philip Karas, Vladimir Kislat, Fabian Kitaguchi, Takao Kolodziejczak, Jeffery J. La Monaca, Fabio Latronico, Luca Maldera, Simone Manfreda, Alberto Marin, Frédéric Marinucci, Andrea Marshall, Herman L. Massaro, Francesco Matt, Giorgio Mitsuishi, Ikuyuki Mizuno, Tsunefumi Muleri, Fabio Ng, Chi-Yung O'Dell, Stephen L. Omodei, Nicola Oppedisano, Chiara Papitto, Alessandro Pavlov, George G. Peirson, Abel Lawrence Perri, Matteo Pesce-Rollins, Melissa Petrucci, Pierre-Olivier Pilia, Maura Possenti, Andrea Poutanen, Juri Puccetti, Simonetta Ramsey, Brian D. Rankin, John Ratheesh, Ajay Roberts, Oliver J. Sgrò, Carmelo Slane, Patrick Soffitta, Paolo Spandre, Gloria Swartz, Douglas A. Tamagawa, Toru Tavecchio, Fabrizio Taverna, Roberto Tawara, Yuzuru Tennant, Allyn F. Thomas, Nicholas E. Tombesi, Francesco Trois, Alessio Tsygankov, Sergey S. Turolla, Roberto Romani, Roger W. Vink, Jacco Weisskopf, Martin C. Wu, Kinwah Xie, Fei Zane, Silvia |
| author_facet | Kouch, Pouya M. Liodakis, Ioannis Fenu, Francesco Zhang, Haocheng Boula, Stella Middei, Riccardo Di Gesu, Laura Paraschos, Georgios F. Agudo, Iván Jorstad, Svetlana G. Lindfors, Elina Marscher, Alan P. Krawczynski, Henric Negro, Michela Hu, Kun Kim, Dawoon E. Cavazzuti, Elisabetta Errando, Manel Blinov, Dmitry Gourni, Anastasia Kiehlmann, Sebastian Kourtidis, Angelos Mandarakas, Nikos Triantafyllou, Nikolaos Vervelaki, Anna Borman, George A. Kopatskaya, Evgenia N. Larionova, Elena G. Morozova, Daria A. Savchenko, Sergey S. Vasilyev, Andrey A. Troitskiy, Ivan S. Grishina, Tatiana S. Zhovtan, Alexey V. Aceituno, Francisco José Bonnoli, Giacomo Casanova, Víctor Escudero, Juan Agís-González, Beatriz Husillos, César Otero-Santos, Jorge Piirola, Vilppu Sota, Alfredo Myserlis, Ioannis Gurwell, Mark Keating, Garrett K. Rao, Ramprasad Angelakis, Emmanouil Kraus, Alexander Antonelli, Lucio Angelo Bachetti, Matteo Baldini, Luca Baumgartner, Wayne H. Bellazzini, Ronaldo Bianchi, Stefano Bongiorno, Stephen D. Bonino, Raffaella Brez, Alessandro Bucciantini, Niccolò Capitanio, Fiamma Castellano, Simone Chen, Chien-Ting Ciprini, Stefano Costa, Enrico De Rosa, Alessandra Del Monte, Ettore Di Lalla, Niccolò Di Marco, Alessandro Donnarumma, Immacolata Doroshenko, Victor Dovčiak, Michal Ehlert, Steven R. Enoto, Teruaki Evangelista, Yuri Fabiani, Sergio Ferrazzoli, Riccardo Garcia, Javier A. Gunji, Shuichi Hayashida, Kiyoshi Heyl, Jeremy Iwakiri, Wataru Kaaret, Philip Karas, Vladimir Kislat, Fabian Kitaguchi, Takao Kolodziejczak, Jeffery J. La Monaca, Fabio Latronico, Luca Maldera, Simone Manfreda, Alberto Marin, Frédéric Marinucci, Andrea Marshall, Herman L. Massaro, Francesco Matt, Giorgio Mitsuishi, Ikuyuki Mizuno, Tsunefumi Muleri, Fabio Ng, Chi-Yung O'Dell, Stephen L. Omodei, Nicola Oppedisano, Chiara Papitto, Alessandro Pavlov, George G. Peirson, Abel Lawrence Perri, Matteo Pesce-Rollins, Melissa Petrucci, Pierre-Olivier Pilia, Maura Possenti, Andrea Poutanen, Juri Puccetti, Simonetta Ramsey, Brian D. Rankin, John Ratheesh, Ajay Roberts, Oliver J. Sgrò, Carmelo Slane, Patrick Soffitta, Paolo Spandre, Gloria Swartz, Douglas A. Tamagawa, Toru Tavecchio, Fabrizio Taverna, Roberto Tawara, Yuzuru Tennant, Allyn F. Thomas, Nicholas E. Tombesi, Francesco Trois, Alessio Tsygankov, Sergey S. Turolla, Roberto Romani, Roger W. Vink, Jacco Weisskopf, Martin C. Wu, Kinwah Xie, Fei Zane, Silvia |
| contents | 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 observation of the blazar S4 0954+65 in a high optical and X-ray state. During our multi-wavelength campaign on the source, we detected an optical flare whose peak coincided with the peak of an X-ray flare. This optical-X-ray flare most likely took place in a feature moving along the parsec-scale jet, imaged at 43 GHz by the Very Long Baseline Array. The 43 GHz polarization angle of the moving component underwent a rotation near the time of the flare. In the optical band, prior to the IXPE observation, we measured the polarization angle to be aligned with the jet axis. In contrast, during the optical flare the optical polarization angle was perpendicular to the jet axis; after the flare, it reverted to being parallel to the jet axis. Due to the smooth behavior of the optical polarization angle during the flare, we favor shocks as the main acceleration mechanism. We also infer that the ambient magnetic field lines in the jet were parallel to the jet position angle. The average degree of optical polarization during the IXPE observation was (14.3$\pm$4.1)%. Despite the flare, we only detected an upper limit of 14% (at 3$σ$ level) on the X-ray polarization degree; although a reasonable assumption on the X-ray polarization angle results in an upper limit of 8.8% ($3σ$). We model the spectral energy distribution (SED) and spectral polarization distribution (SPD) of S4 0954+65 with leptonic (synchrotron self-Compton) and hadronic (proton and pair synchrotron) models. The constraints we obtain with our combined multi-wavelength polarization observations and SED modeling tentatively disfavor hadronic models for the X-ray emission in S4 0954+65. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_16868 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | IXPE Observation of the Low-Synchrotron Peaked Blazar S4 0954+65 During An Optical-X-ray Flare Kouch, Pouya M. Liodakis, Ioannis Fenu, Francesco Zhang, Haocheng Boula, Stella Middei, Riccardo Di Gesu, Laura Paraschos, Georgios F. Agudo, Iván Jorstad, Svetlana G. Lindfors, Elina Marscher, Alan P. Krawczynski, Henric Negro, Michela Hu, Kun Kim, Dawoon E. Cavazzuti, Elisabetta Errando, Manel Blinov, Dmitry Gourni, Anastasia Kiehlmann, Sebastian Kourtidis, Angelos Mandarakas, Nikos Triantafyllou, Nikolaos Vervelaki, Anna Borman, George A. Kopatskaya, Evgenia N. Larionova, Elena G. Morozova, Daria A. Savchenko, Sergey S. Vasilyev, Andrey A. Troitskiy, Ivan S. Grishina, Tatiana S. Zhovtan, Alexey V. Aceituno, Francisco José Bonnoli, Giacomo Casanova, Víctor Escudero, Juan Agís-González, Beatriz Husillos, César Otero-Santos, Jorge Piirola, Vilppu Sota, Alfredo Myserlis, Ioannis Gurwell, Mark Keating, Garrett K. Rao, Ramprasad Angelakis, Emmanouil Kraus, Alexander Antonelli, Lucio Angelo Bachetti, Matteo Baldini, Luca Baumgartner, Wayne H. Bellazzini, Ronaldo Bianchi, Stefano Bongiorno, Stephen D. Bonino, Raffaella Brez, Alessandro Bucciantini, Niccolò Capitanio, Fiamma Castellano, Simone Chen, Chien-Ting Ciprini, Stefano Costa, Enrico De Rosa, Alessandra Del Monte, Ettore Di Lalla, Niccolò Di Marco, Alessandro Donnarumma, Immacolata Doroshenko, Victor Dovčiak, Michal Ehlert, Steven R. Enoto, Teruaki Evangelista, Yuri Fabiani, Sergio Ferrazzoli, Riccardo Garcia, Javier A. Gunji, Shuichi Hayashida, Kiyoshi Heyl, Jeremy Iwakiri, Wataru Kaaret, Philip Karas, Vladimir Kislat, Fabian Kitaguchi, Takao Kolodziejczak, Jeffery J. La Monaca, Fabio Latronico, Luca Maldera, Simone Manfreda, Alberto Marin, Frédéric Marinucci, Andrea Marshall, Herman L. Massaro, Francesco Matt, Giorgio Mitsuishi, Ikuyuki Mizuno, Tsunefumi Muleri, Fabio Ng, Chi-Yung O'Dell, Stephen L. Omodei, Nicola Oppedisano, Chiara Papitto, Alessandro Pavlov, George G. Peirson, Abel Lawrence Perri, Matteo Pesce-Rollins, Melissa Petrucci, Pierre-Olivier Pilia, Maura Possenti, Andrea Poutanen, Juri Puccetti, Simonetta Ramsey, Brian D. Rankin, John Ratheesh, Ajay Roberts, Oliver J. Sgrò, Carmelo Slane, Patrick Soffitta, Paolo Spandre, Gloria Swartz, Douglas A. Tamagawa, Toru Tavecchio, Fabrizio Taverna, Roberto Tawara, Yuzuru Tennant, Allyn F. Thomas, Nicholas E. Tombesi, Francesco Trois, Alessio Tsygankov, Sergey S. Turolla, Roberto Romani, Roger W. Vink, Jacco Weisskopf, Martin C. Wu, Kinwah Xie, Fei Zane, Silvia High Energy Astrophysical Phenomena 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 observation of the blazar S4 0954+65 in a high optical and X-ray state. During our multi-wavelength campaign on the source, we detected an optical flare whose peak coincided with the peak of an X-ray flare. This optical-X-ray flare most likely took place in a feature moving along the parsec-scale jet, imaged at 43 GHz by the Very Long Baseline Array. The 43 GHz polarization angle of the moving component underwent a rotation near the time of the flare. In the optical band, prior to the IXPE observation, we measured the polarization angle to be aligned with the jet axis. In contrast, during the optical flare the optical polarization angle was perpendicular to the jet axis; after the flare, it reverted to being parallel to the jet axis. Due to the smooth behavior of the optical polarization angle during the flare, we favor shocks as the main acceleration mechanism. We also infer that the ambient magnetic field lines in the jet were parallel to the jet position angle. The average degree of optical polarization during the IXPE observation was (14.3$\pm$4.1)%. Despite the flare, we only detected an upper limit of 14% (at 3$σ$ level) on the X-ray polarization degree; although a reasonable assumption on the X-ray polarization angle results in an upper limit of 8.8% ($3σ$). We model the spectral energy distribution (SED) and spectral polarization distribution (SPD) of S4 0954+65 with leptonic (synchrotron self-Compton) and hadronic (proton and pair synchrotron) models. The constraints we obtain with our combined multi-wavelength polarization observations and SED modeling tentatively disfavor hadronic models for the X-ray emission in S4 0954+65. |
| title | IXPE Observation of the Low-Synchrotron Peaked Blazar S4 0954+65 During An Optical-X-ray Flare |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2411.16868 |