2025A&A...698L..19L

Query : 2025A&A...698L..19L

2025A&A...698L..19L - Astronomy and Astrophysics, volume 698L19 (2025/6-1)

Determining the origin of the X-ray emission in blazars through multiwavelength polarization.

LIODAKIS I., ZHANG H., BOULA S., MIDDEI R., OTERO-SANTOS J., BLINOV D., AGUDO I., BOTTCHER M., CHEN C.-T., EHLERT S.R., JORSTAD S.G., KAARET P., KRAWCZYNSKI H., PEIRSON A.L., ROMANI R.W., TAVECCHIO F., WEISSKOPF M.C., KOUCH P.M., LINDFORS E., NILSSON K., McCALL C., JERMAK H.E., STEELE I.A., MYSERLIS I., GURWELL M., KEATING G.K., RAO R., KANG S., LEE S.-S., KIM S., CHEONG W.Y., JEONG H.-W., ANGELAKIS E., KRAUS A., ACEITUNO F.J., BONNOLI G., CASANOVA V., ESCUDERO J., AGIS-GONZALEZ B., MORCUENDE D., SOTA A., BACHEV R., GRISHINA T.S., KOPATSKAYA E.N., LARIONOVA E.G., MOROZOVA D.A., SAVCHENKO S.S., SHISHKINA E.V., TROITSKIY I.S., TROITSKAYA Y.V. and VASILYEV A.A.

Abstract (from CDS):

The origin of the high-energy emission in astrophysical jets from black holes is a highly debated issue. This is particularly true for jets from supermassive black holes, which are among the most powerful particle accelerators in the Universe. So far, the addition of new observations and new messengers have only managed to create more questions than answers. However, the newly available X-ray polarization observations promise to finally distinguish between emission models. We use extensive multiwavelength and polarization campaigns as well as state-of-the-art polarized spectral energy distribution models to attack this problem by focusing on two X-ray polarization observations of blazar BL Lacertae in flaring and quiescent γ-ray states. We find that, regardless of the jet composition and underlying emission model, inverse-Compton scattering from relativistic electrons dominates at X-ray energies.

Abstract Copyright: © The Authors 2025

Journal keyword(s): polarization - radiation mechanisms: non-thermal - galaxies: active - BL Lacertae objects: individual: BL Lacertae - galaxies: jets

Simbad objects: 2

Full paper

View the references in ADS

Number of rows : 2

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	PMN J0509+0541	BLL	05 09 25.9644373872	+05 41 35.333820420	15.32	14.95	14.78	15.12		~	589	2
2	NAME BL Lac	BLL	22 02 43.2913536816	+42 16 39.979416792		15.66	14.72			~	2397	1

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