Marshall, HL;
Liodakis, I;
Marscher, AP;
Di Lalla, N;
Jorstad, SG;
Kim, DE;
Middei, R;
... Capitanio, F; + view all
(2024)
Observations of Low and Intermediate Spectral Peak Blazars with the Imaging X-Ray Polarimetry Explorer.
The Astrophysical Journal
, 972
(1)
, Article 74. 10.3847/1538-4357/ad5671.
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Abstract
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 was IXPE able to detect X-ray polarization at the 3σ level. However, we placed upper limits on the polarization degree at ∼10%-30%. The undetected polarizations favor models where the X-ray band is dominated by unpolarized photons upscattered by relativistic electrons in the jets of blazars, although hadronic models are not completely eliminated. We discuss the X-ray polarization upper limits in the context of our contemporaneous multiwavelength polarization campaigns.
| Type: | Article |
|---|---|
| Title: | Observations of Low and Intermediate Spectral Peak Blazars with the Imaging X-Ray Polarimetry Explorer |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3847/1538-4357/ad5671 |
| Publisher version: | http://dx.doi.org/10.3847/1538-4357/ad5671 |
| Language: | English |
| Additional information: | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence, https://creativecommons.org/licenses/by/4.0/. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10197388 |
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