TY  - JOUR
AV  - public
SN  - 0004-637X
Y1  - 2024/09/01/
TI  - Observations of Low and Intermediate Spectral Peak Blazars with the Imaging X-Ray Polarimetry Explorer
UR  - http://dx.doi.org/10.3847/1538-4357/ad5671
ID  - discovery10197388
IS  - 1
N2  - 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 3? 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.
VL  - 972
N1  - 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.
A1  - Marshall, HL
A1  - Liodakis, I
A1  - Marscher, AP
A1  - Di Lalla, N
A1  - Jorstad, SG
A1  - Kim, DE
A1  - Middei, R
A1  - Negro, M
A1  - Omodei, N
A1  - Peirson, AL
A1  - Perri, M
A1  - Puccetti, S
A1  - Laurenti, M
A1  - Agudo, I
A1  - Bonnoli, G
A1  - Berdyugin, AV
A1  - Cavazzuti, E
A1  - Rodriguez Cavero, N
A1  - Donnarumma, I
A1  - Di Gesu, L
A1  - Jormanainen, J
A1  - Krawczynski, H
A1  - Lindfors, E
A1  - Madjeski, G
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A1  - Husillos, C
A1  - Marchini, A
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A1  - Blinov, D
A1  - Bourbah, IG
A1  - Kielhmann, S
A1  - Kontopodis, E
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A1  - Romanopoulos, S
A1  - Skalidis, R
A1  - Vervelaki, A
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A1  - Larionova, EG
A1  - Morozova, DA
A1  - Savchenko, SS
A1  - Vasilyev, AA
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A1  - Casadio, C
A1  - Escudero, J
A1  - Kramer, J
A1  - Myserlis, I
A1  - Trainou, E
A1  - Imazawa, R
A1  - Sasada, M
A1  - Fukazawa, Y
A1  - Kawabata, KS
A1  - Uemura, M
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A1  - Nakaoka, T
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A1  - Masiero, JR
A1  - Mawet, D
A1  - Panopoulou, GV
A1  - Tinyanont, S
A1  - Kagitani, M
A1  - Kravtsov, V
A1  - Sakanoi, T
A1  - Dattolo, M
A1  - Gurwell, M
A1  - Keating, G
A1  - Rao, R
A1  - Cheong, WY
A1  - Jeong, HW
A1  - Kang, S
A1  - Kim, SH
A1  - Lee, SS
A1  - Angelakis, E
A1  - Kraus, A
A1  - Hales, A
A1  - Kameno, S
A1  - Kneissl, R
A1  - Messias, H
A1  - Nagai, H
A1  - Antonelli, LA
A1  - Bachetti, M
A1  - Baldini, L
A1  - Baumgartner, WH
A1  - Bellazzini, R
A1  - Bianchi, S
A1  - Bongiorno, SD
A1  - Bonino, R
A1  - Brez, A
A1  - Bucciantini, N
A1  - Capitanio, F
PB  - American Astronomical Society
JF  - The Astrophysical Journal
ER  -