2024ApJ...963....5E

Query : 2024ApJ...963....5E

2024ApJ...963....5E - Astrophys. J., 963, 5 (2024/March-1)

Detection of X-Ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-Ray Polarimetry Explorer.

ERRANDO M., LIODAKIS I., MARSCHER A.P., MARSHALL H.L., MIDDEI R., NEGRO M., PEIRSON A.L., PERRI M., PUCCETTI S., RABINOWITZ P.L., AGUDO I., JORSTAD S.G., SAVCHENKO S.S., BLINOV D., BOURBAH I.G., KIEHLMANN S., KONTOPODIS E., MANDARAKAS N., ROMANOPOULOS S., SKALIDIS R., VERVELAKI A., ACEITUNO F.J., BERNARDOS M.I., BONNOLI G., CASANOVA V., AGIS-GONZALEZ B., HUSILLOS C., MARCHINI A., SOTA A., KOUCH P.M., LINDFORS E., CASADIO C., ESCUDERO J., MYSERLIS I., IMAZAWA R., SASADA M., FUKAZAWA Y., KAWABATA K.S., UEMURA M., MIZUNO T., NAKAOKA T., AKITAYA H., GURWELL M., KEATING G.K., RAO R., INGRAM A., MASSARO F., ANTONELLI L.A., BONINO R., CAVAZZUTI E., CHEN C.-T., CIBRARIO N., CIPRINI S., DE ROSA A., DI GESU L., DI PIERRO F., DONNARUMMA I., EHLERT S.R., FENU F., GAU E., KARAS V., KIM D.E., KRAWCZYNSKI H., LAURENTI M., LISALDA L., LOPEZ-COTO R., MADEJSKI G., MARIN F., MARINUCCI A., MITSUISHI I., MULERI F., PACCIANI L., PAGGI A., PETRUCCI P.-O., RODRIGUEZ CAVERO N., ROMANI R.W., TAVECCHIO F., TUGLIANI S., WU K., BACHETTI M., BALDINI L., BAUMGARTNER W.H., BELLAZZINI R., BIANCHI S., BONGIORNO S.D., BREZ A., BUCCIANTINI N., CAPITANIO F., CASTELLANO S., COSTA E., DEL MONTE E., DI LALLA N., DI MARCO A., DOROSHENKO V., DOVCIAK M., ENOTO T., EVANGELISTA Y., FABIANI S., FERRAZZOLI R., GARCIA J.A., GUNJI S., HAYASHIDA K., HEYL J., IWAKIRI W., KAARET P., KISLAT F., KITAGUCHI T., KOLODZIEJCZAK J.J., LA MONACA F., LATRONICO L., MALDERA S., MANFREDA A., MATT G., NG C.-Y., O'DELL S.L., OMODEI N., OPPEDISANO C., PAPITTO A., PAVLOV G.G., PESCE-ROLLINS M., PILIA M., POSSENTI A., POUTANEN J., RAMSEY B.D., RANKIN J., RATHEESH A., ROBERTS O.J., SGRO C., SLANE P., SOFFITTA P., SPANDRE G., SWARTZ D.A., TAMAGAWA T., TAVERNA R., TAWARA Y., TENNANT A.F., THOMAS N.E., TOMBESI F., TROIS A., TSYGANKOV S.S., TUROLLA R., VINK J., WEISSKOPF M.C., XIE F. and ZANE S.

Abstract (from CDS):

Observations of linear polarization in the 2-8 keV energy range with the Imaging X-ray Polarimetry Explorer (IXPE) explore the magnetic field geometry and dynamics of the regions generating nonthermal radiation in relativistic jets of blazars. These jets, particularly in blazars whose spectral energy distribution peaks at X-ray energies, emit X-rays via synchrotron radiation from high-energy particles within the jet. IXPE observations of the X-ray-selected BL Lac-type blazar 1ES 1959+650 on 2022 May 3-4 showed a significant linear polarization degree of Πx = 8.0% ± 2.3% at an electric-vector position angle ψx = 123° ± 8°. However, on 2022 June 9-12, only an upper limit of Πx ≤ 5.1% could be derived (at the 99% confidence level). The degree of optical polarization at that time, ΠO ∼ 5%, is comparable to the X-ray measurement. We investigate possible scenarios for these findings, including temporal and geometrical depolarization effects. Unlike some other X-ray-selected BL Lac objects, there is no significant chromatic dependence of the measured polarization in 1ES 1959+650, and its low X-ray polarization may be attributed to turbulence in the jet flow with dynamical timescales shorter than 1 day.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Relativistic jets - X-ray active galactic nuclei - Active galactic nuclei - Blazars - Polarimetry - Spectropolarimetry

Simbad objects: 7

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Number of rows : 7
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 RX J0232.8+2017 BLL 02 32 48.6148874688 +20 17 17.486717388     18.00 13.96   ~ 387 1
2 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
3 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
4 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
5 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
6 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 699 2
7 EM* MWC 349A Or* 20 32 45.5291969760 +40 39 36.651807828           ~ 180 0

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