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 A1 - Marin, F A1 - Massaro, F A1 - Pacciani, L A1 - Poutanen, J A1 - Tavecchio, F A1 - Kouch, PM A1 - Aceituno, FJ A1 - Bernardos, MI A1 - Casanova, V A1 - García-Comas, M A1 - Agís-González, B A1 - Husillos, C A1 - Marchini, A A1 - Sota, A A1 - Blinov, D A1 - Bourbah, IG A1 - Kielhmann, S A1 - Kontopodis, E A1 - Mandarakas, N A1 - Romanopoulos, S A1 - Skalidis, R A1 - Vervelaki, A A1 - Borman, GA A1 - Kopatskaya, EN A1 - Larionova, EG A1 - Morozova, DA A1 - Savchenko, SS A1 - Vasilyev, AA A1 - Zhovtan, AV 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 A1 - Mizuno, T A1 - Nakaoka, T A1 - Akitaya, H 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 -