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Tracking down the broadband polarimetric properties of PG 1553+113

Fuente: arXiv

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Main Authors:	Middei, Riccardo, Jorstad, Svetlana G., Marscher, Alan P., Liodakis, Ioannis, Perri, Matteo, Maselli, Alessandro, Ciprini, Stefano, Nardini, Emanuele, Puccetti, Simonetta, Di Gesu, Laura, Agudo, Iván, Kim, Dawoon E., Myserlis, Ioannis, Falcão, A. Trindade, Król, D. Ł., Antonelli, Lucio A., Aniello, Tommaso, Kouch, Pouya M., Nilsson, Kari, Lindfors, Elina, Pursimo, Tapio, Aceituno, Francisco José, Casanova, Víctor, Emery, Gabriel, Pedrosa, Juan Escudero, Otero-Santos, Jorge, Sota, Alfredo, Piirola, Vilppu, Borman, George A., Grishina, Tatiana S., Hagen-Thorn, Vladimir A., Kopatskaya, Evgenia N., Larionova, Elena G., Morozova, Daria A., Savchenko, Sergey S., Shishkina, Ekaterina V., Troitskiy, Ivan S., Troitskaya, Yulia V., Vasilyev, Andrey A., Zhovtan, Alexey V., Benke, Petra, Debbrecht, Lena, Eich, Julia, Eppel, Florian, Gokus, Andrea, Hämmerich, Steven, Heßdörfer, Jonas, Kadler, Matthias, Kirchner, Dana, Paraschos, Georgios F., Rösch, Florian, Schulga, Wladislaw, Gurwell, Mark, Keating, Garrett, Rao, Ramprasad, Angelakis, Emmanouil, Kraus, Alexander, Agís-González, Beatriz, Blinov, Dmitry, Glykopoulou, Anastasia, Capecchiacci, Sara, Floris, Alberto, Fotis, Panagiotis, Koukoutsi, Alkmini, Kypriotakis, John A., Langis, Dimitrios A., Rompogiannakis, Dimitrios, Polychronakis, Aristeidis, Tsioupli, Vasiliki, Vogiatzis, Stavros, Zoumpoulakis, Orestis, Tochihara, Sumie, Imazawa, Ryo, Sasada, Mahito, Fukazawa, Yasushi, Kawabata, Koji S., Uemura, Makoto, Mizuno, Tsunefumi, Nakaoka, Tatsuya, Akitaya, Hiroshi, Akai, Takahiro
Format:	Preprint
Published:	2026
Subjects:	High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
Online Access:	Acceder al recurso
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author	Middei, Riccardo Jorstad, Svetlana G. Marscher, Alan P. Liodakis, Ioannis Perri, Matteo Maselli, Alessandro Ciprini, Stefano Nardini, Emanuele Puccetti, Simonetta Di Gesu, Laura Agudo, Iván Kim, Dawoon E. Myserlis, Ioannis Falcão, A. Trindade Król, D. Ł. Antonelli, Lucio A. Aniello, Tommaso Kouch, Pouya M. Nilsson, Kari Lindfors, Elina Pursimo, Tapio Aceituno, Francisco José Casanova, Víctor Emery, Gabriel Pedrosa, Juan Escudero Otero-Santos, Jorge Sota, Alfredo Piirola, Vilppu Borman, George A. Grishina, Tatiana S. Hagen-Thorn, Vladimir A. Kopatskaya, Evgenia N. Larionova, Elena G. Morozova, Daria A. Savchenko, Sergey S. Shishkina, Ekaterina V. Troitskiy, Ivan S. Troitskaya, Yulia V. Vasilyev, Andrey A. Zhovtan, Alexey V. Benke, Petra Debbrecht, Lena Eich, Julia Eppel, Florian Gokus, Andrea Hämmerich, Steven Heßdörfer, Jonas Kadler, Matthias Kirchner, Dana Paraschos, Georgios F. Rösch, Florian Schulga, Wladislaw Gurwell, Mark Keating, Garrett Rao, Ramprasad Angelakis, Emmanouil Kraus, Alexander Agís-González, Beatriz Blinov, Dmitry Glykopoulou, Anastasia Capecchiacci, Sara Floris, Alberto Fotis, Panagiotis Koukoutsi, Alkmini Kypriotakis, John A. Langis, Dimitrios A. Rompogiannakis, Dimitrios Polychronakis, Aristeidis Tsioupli, Vasiliki Vogiatzis, Stavros Zoumpoulakis, Orestis Tochihara, Sumie Imazawa, Ryo Sasada, Mahito Fukazawa, Yasushi Kawabata, Koji S. Uemura, Makoto Mizuno, Tsunefumi Nakaoka, Tatsuya Akitaya, Hiroshi Akai, Takahiro
author_facet	Middei, Riccardo Jorstad, Svetlana G. Marscher, Alan P. Liodakis, Ioannis Perri, Matteo Maselli, Alessandro Ciprini, Stefano Nardini, Emanuele Puccetti, Simonetta Di Gesu, Laura Agudo, Iván Kim, Dawoon E. Myserlis, Ioannis Falcão, A. Trindade Król, D. Ł. Antonelli, Lucio A. Aniello, Tommaso Kouch, Pouya M. Nilsson, Kari Lindfors, Elina Pursimo, Tapio Aceituno, Francisco José Casanova, Víctor Emery, Gabriel Pedrosa, Juan Escudero Otero-Santos, Jorge Sota, Alfredo Piirola, Vilppu Borman, George A. Grishina, Tatiana S. Hagen-Thorn, Vladimir A. Kopatskaya, Evgenia N. Larionova, Elena G. Morozova, Daria A. Savchenko, Sergey S. Shishkina, Ekaterina V. Troitskiy, Ivan S. Troitskaya, Yulia V. Vasilyev, Andrey A. Zhovtan, Alexey V. Benke, Petra Debbrecht, Lena Eich, Julia Eppel, Florian Gokus, Andrea Hämmerich, Steven Heßdörfer, Jonas Kadler, Matthias Kirchner, Dana Paraschos, Georgios F. Rösch, Florian Schulga, Wladislaw Gurwell, Mark Keating, Garrett Rao, Ramprasad Angelakis, Emmanouil Kraus, Alexander Agís-González, Beatriz Blinov, Dmitry Glykopoulou, Anastasia Capecchiacci, Sara Floris, Alberto Fotis, Panagiotis Koukoutsi, Alkmini Kypriotakis, John A. Langis, Dimitrios A. Rompogiannakis, Dimitrios Polychronakis, Aristeidis Tsioupli, Vasiliki Vogiatzis, Stavros Zoumpoulakis, Orestis Tochihara, Sumie Imazawa, Ryo Sasada, Mahito Fukazawa, Yasushi Kawabata, Koji S. Uemura, Makoto Mizuno, Tsunefumi Nakaoka, Tatsuya Akitaya, Hiroshi Akai, Takahiro
contents	We report on a nine-month monitoring campaign of the blazar PG 1553+113, relying on three observations carried out in 2025 with the Imaging X-ray Polarimetry Explorer (IXPE) and supported by multi-wavelength facilities. The source displayed pronounced variability across the electromagnetic spectrum, with X-ray flux changes by up to a factor of $\sim5$ and complex evolution of the optical polarization properties, including one of the largest (exceeding $150^{\circ}$) and fastest rotations in the electric vector position angle (EVPA) ever recorded. This swing of the EVPA was also accompanied by a temporary drop of the optical polarization degree to nearly zero. Significant X-ray polarization was observed during the third IXPE pointing, with a polarization degree $Π_{\rm X}\,=(\,18.4\,\pm\,5.8)\%$ and $Ψ_{\rm X}\,=\,74^{\circ} \pm 9^{\circ}$ in the 2--8~keV band, while only upper limits were obtained in the first two epochs. The optical data show that the second IXPE observation occurred shortly after a dramatic optical polarization event characterized by a rapid EVPA swing and strong depolarization. Two possible scenarios may explain the broadband polarimetric behavior: (i) the superposition of two emitting regions with nearly orthogonal magnetic field configurations and variable relative contributions, and (ii) the interaction of a single emitting region with a shock that temporarily reorders the magnetic field. In both cases, the data support a picture in which the X-ray and optical emissions arise from closely related but not strictly co-spatial regions within a dynamically evolving, magnetically structured jet.
format	Preprint
id	arxiv_https___arxiv_org_abs_2605_12602
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	Tracking down the broadband polarimetric properties of PG 1553+113 Middei, Riccardo Jorstad, Svetlana G. Marscher, Alan P. Liodakis, Ioannis Perri, Matteo Maselli, Alessandro Ciprini, Stefano Nardini, Emanuele Puccetti, Simonetta Di Gesu, Laura Agudo, Iván Kim, Dawoon E. Myserlis, Ioannis Falcão, A. Trindade Król, D. Ł. Antonelli, Lucio A. Aniello, Tommaso Kouch, Pouya M. Nilsson, Kari Lindfors, Elina Pursimo, Tapio Aceituno, Francisco José Casanova, Víctor Emery, Gabriel Pedrosa, Juan Escudero Otero-Santos, Jorge Sota, Alfredo Piirola, Vilppu Borman, George A. Grishina, Tatiana S. Hagen-Thorn, Vladimir A. Kopatskaya, Evgenia N. Larionova, Elena G. Morozova, Daria A. Savchenko, Sergey S. Shishkina, Ekaterina V. Troitskiy, Ivan S. Troitskaya, Yulia V. Vasilyev, Andrey A. Zhovtan, Alexey V. Benke, Petra Debbrecht, Lena Eich, Julia Eppel, Florian Gokus, Andrea Hämmerich, Steven Heßdörfer, Jonas Kadler, Matthias Kirchner, Dana Paraschos, Georgios F. Rösch, Florian Schulga, Wladislaw Gurwell, Mark Keating, Garrett Rao, Ramprasad Angelakis, Emmanouil Kraus, Alexander Agís-González, Beatriz Blinov, Dmitry Glykopoulou, Anastasia Capecchiacci, Sara Floris, Alberto Fotis, Panagiotis Koukoutsi, Alkmini Kypriotakis, John A. Langis, Dimitrios A. Rompogiannakis, Dimitrios Polychronakis, Aristeidis Tsioupli, Vasiliki Vogiatzis, Stavros Zoumpoulakis, Orestis Tochihara, Sumie Imazawa, Ryo Sasada, Mahito Fukazawa, Yasushi Kawabata, Koji S. Uemura, Makoto Mizuno, Tsunefumi Nakaoka, Tatsuya Akitaya, Hiroshi Akai, Takahiro High Energy Astrophysical Phenomena High Energy Physics - Phenomenology We report on a nine-month monitoring campaign of the blazar PG 1553+113, relying on three observations carried out in 2025 with the Imaging X-ray Polarimetry Explorer (IXPE) and supported by multi-wavelength facilities. The source displayed pronounced variability across the electromagnetic spectrum, with X-ray flux changes by up to a factor of $\sim5$ and complex evolution of the optical polarization properties, including one of the largest (exceeding $150^{\circ}$) and fastest rotations in the electric vector position angle (EVPA) ever recorded. This swing of the EVPA was also accompanied by a temporary drop of the optical polarization degree to nearly zero. Significant X-ray polarization was observed during the third IXPE pointing, with a polarization degree $Π_{\rm X}\,=(\,18.4\,\pm\,5.8)\%$ and $Ψ_{\rm X}\,=\,74^{\circ} \pm 9^{\circ}$ in the 2--8~keV band, while only upper limits were obtained in the first two epochs. The optical data show that the second IXPE observation occurred shortly after a dramatic optical polarization event characterized by a rapid EVPA swing and strong depolarization. Two possible scenarios may explain the broadband polarimetric behavior: (i) the superposition of two emitting regions with nearly orthogonal magnetic field configurations and variable relative contributions, and (ii) the interaction of a single emitting region with a shock that temporarily reorders the magnetic field. In both cases, the data support a picture in which the X-ray and optical emissions arise from closely related but not strictly co-spatial regions within a dynamically evolving, magnetically structured jet.
title	Tracking down the broadband polarimetric properties of PG 1553+113
topic	High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
url	https://arxiv.org/abs/2605.12602