2024ApJ...967L..38F

Query : 2024ApJ...967L..38F

2024ApJ...967L..38F - Astrophys. J., 967, L38 (2024/June-1)

Discovery of a Shock-compressed Magnetic Field in the Northwestern Rim of the Young Supernova Remnant RX J1713.7-3946 with X-Ray Polarimetry.

FERRAZZOLI R., PROKHOROV D., BUCCIANTINI N., SLANE P., VINK J., CARDILLO M., YANG Y.-J., SILVESTRI S., ZHOU P., COSTA E., OMODEI N., NG C.-Y., SOFFITTA P., WEISSKOPF M.C., BALDINI L., DI MARCO A., DOROSHENKO V., HEYL J., KAARET P., KIM D.E., MARIN F., MIZUNO T., PESCE-ROLLINS M., SGRO C., SWARTZ D.A., TAMAGAWA T., XIE F., AGUDO I., ANTONELLI L.A., BACHETTI M., BAUMGARTNER W.H., BELLAZZINI R., BIANCHI S., BONGIORNO S.D., BONINO R., BREZ A., CAPITANIO F., CASTELLANO S., CAVAZZUTI E., CHEN C.-T., CIPRINI S., DE ROSA A., DEL MONTE E., DI GESU L., DI LALLA N., DONNARUMMA I., DOVCIAK M., EHLERT S.R., ENOTO T., EVANGELISTA Y., FABIANI S., GARCIA J.A., GUNJI S., HAYASHIDA K., IWAKIRI W., JORSTAD S.G., KARAS V., KISLAT F., KITAGUCHI T., KOLODZIEJCZAK J.J., KRAWCZYNSKI H., LA MONACA F., LATRONICO L., LIODAKIS I., MALDERA S., MANFREDA A., MARINUCCI A., MARSCHER A.P., MARSHALL H.L., MASSARO F., MATT G., MITSUISHI I., MULERI F., NEGRO M., O'DELL S.L., OPPEDISANO C., PAPITTO A., PAVLOV G.G., PEIRSON A.L., PERRI M., PETRUCCI P.-O., PILIA M., POSSENTI A., POUTANEN J., PUCCETTI S., RAMSEY B.D., RANKIN J., RATHEESH A., ROBERTS O.J., ROMANI R.W., SPANDRE G., TAVECCHIO F., TAVERNA R., TAWARA Y., TENNANT A.F., THOMAS N.E., TOMBESI F., TROIS A., TSYGANKOV S.S., TUROLLA R., WU K. and ZANE S.

Abstract (from CDS):

Supernova remnants (SNRs) provide insights into cosmic-ray acceleration and magnetic field dynamics at shock fronts. Recent X-ray polarimetric measurements by the Imaging X-ray Polarimetry Explorer (IXPE) have revealed radial magnetic fields near particle acceleration sites in young SNRs, including Cassiopeia A, Tycho, and SN 1006. We present here the spatially resolved IXPE X-ray polarimetric observation of the northwestern rim of SNR RX J1713.7-3946. For the first time, our analysis shows that the magnetic field in the particle acceleration sites of this SNR is oriented tangentially with respect to the shock front. Because of the lack of precise Faraday rotation measurements in the radio band, this was not possible before. The average measured polarization degree (PD) of the synchrotron emission is 12.5% ± 3.3%, lower than the one measured by IXPE in SN 1006, comparable to the Tycho one, but notably higher than the one in Cassiopeia A. On subparsec scales, localized patches within RX J1713.7-3946 display a PD of up to 41.5% ± 9.5%. These results are compatible with a shock-compressed magnetic field. However, in order to explain the observed PD, either the presence of a radial net magnetic field upstream of the shock or partial reisotropization of the turbulence downstream by radial magnetohydrodynamical instabilities can be invoked. From comparison of PD and magnetic field distribution with γ-rays and 12CO data, our results provide new inputs in favor of a leptonic origin of the γ-ray emission.

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

Journal keyword(s): X-ray astronomy - Polarimetry - Supernova remnants

Simbad objects: 16

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Number of rows : 16
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 SN 1572A SN* 00 25 21.5 +64 08 27           B8 1254 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 SNR B0102-72.3 SNR 01 04 01.2 -72 01 52           ~ 422 1
4 RX J0232.8+2017 BLL 02 32 48.6148874688 +20 17 17.486717388     18.00 13.96   ~ 387 1
5 PSR B0540-69 Psr 05 40 11.2000490438 -69 19 54.198559829           ~ 976 3
6 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
7 ESO 134-11 HII 14 40 29 -62 38.7           ~ 585 1
8 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1407 1
9 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
10 SNR G347.3-00.5 SNR 17 12 27 -39 41.2     12.27     ~ 761 1
11 SN 393 SN* 17 14 -39.8           ~ 47 1
12 SNR G004.5+06.2 SNR 17 33.4 -21 34           ~ 22 0
13 SNR G011.2-01.1 SNR 18 14.0 -19 46           ~ 70 1
14 SNR G007.7-03.7 SNR 18 17 25 -24 04.0           ~ 52 0
15 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
16 NAME Galactic Ridge ? ~ ~           ~ 543 1

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