%0 Journal Article
%@ 0004-637X
%A Marshall, HL
%A Liodakis, I
%A Marscher, AP
%A Di Lalla, N
%A Jorstad, SG
%A Kim, DE
%A Middei, R
%A Negro, M
%A Omodei, N
%A Peirson, AL
%A Perri, M
%A Puccetti, S
%A Laurenti, M
%A Agudo, I
%A Bonnoli, G
%A Berdyugin, AV
%A Cavazzuti, E
%A Rodriguez Cavero, N
%A Donnarumma, I
%A Di Gesu, L
%A Jormanainen, J
%A Krawczynski, H
%A Lindfors, E
%A Madjeski, G
%A Marin, F
%A Massaro, F
%A Pacciani, L
%A Poutanen, J
%A Tavecchio, F
%A Kouch, PM
%A Aceituno, FJ
%A Bernardos, MI
%A Casanova, V
%A García-Comas, M
%A Agís-González, B
%A Husillos, C
%A Marchini, A
%A Sota, A
%A Blinov, D
%A Bourbah, IG
%A Kielhmann, S
%A Kontopodis, E
%A Mandarakas, N
%A Romanopoulos, S
%A Skalidis, R
%A Vervelaki, A
%A Borman, GA
%A Kopatskaya, EN
%A Larionova, EG
%A Morozova, DA
%A Savchenko, SS
%A Vasilyev, AA
%A Zhovtan, AV
%A Casadio, C
%A Escudero, J
%A Kramer, J
%A Myserlis, I
%A Trainou, E
%A Imazawa, R
%A Sasada, M
%A Fukazawa, Y
%A Kawabata, KS
%A Uemura, M
%A Mizuno, T
%A Nakaoka, T
%A Akitaya, H
%A Masiero, JR
%A Mawet, D
%A Panopoulou, GV
%A Tinyanont, S
%A Kagitani, M
%A Kravtsov, V
%A Sakanoi, T
%A Dattolo, M
%A Gurwell, M
%A Keating, G
%A Rao, R
%A Cheong, WY
%A Jeong, HW
%A Kang, S
%A Kim, SH
%A Lee, SS
%A Angelakis, E
%A Kraus, A
%A Hales, A
%A Kameno, S
%A Kneissl, R
%A Messias, H
%A Nagai, H
%A Antonelli, LA
%A Bachetti, M
%A Baldini, L
%A Baumgartner, WH
%A Bellazzini, R
%A Bianchi, S
%A Bongiorno, SD
%A Bonino, R
%A Brez, A
%A Bucciantini, N
%A Capitanio, F
%D 2024
%F discovery:10197388
%I American Astronomical Society
%J The Astrophysical Journal
%N 1
%T Observations of Low and Intermediate Spectral Peak Blazars with the Imaging X-Ray Polarimetry Explorer
%U https://discovery.ucl.ac.uk/id/eprint/10197388/
%V 972
%X 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.
%Z 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.