2026Sci...391..280L

Query : 2026Sci...391..280L

2026Sci...391..280L - Science, 391, 280-284 (2026/January-0)

A sudden change and recovery in the magnetic environment around a repeating fast radio burst.

LI Y., ZHANG S.B., YANG Y.P., TSAI C.W., YANG X., LAW C.J., ANNA-THOMAS R., CHEN X.L., LEE K.J., TANG Z.F., XIAO D., XU H., YANG X.L., CHEN G., FENG Y., LI D.Z., MCKINVEN R., NIU J.R., SHIN K., WANG B.J., ZHANG C.F., ZHANG Y.K., ZHOU D.J., ZHU Y.H., DAI Z.G., CHANG C.M., GENG J.J., HAN J.L., HU L., LI D., LUO R., NIU C.H., SHI D.D., SUN T.R., WU X.F., ZHU W.W., JIANG P. and ZHANG B.

Abstract (from CDS):

Fast radio bursts (FRBs) are millisecond-duration radio transients from extragalactic sources. Some repeating FRBs exhibit variations in their Faraday rotation measure (RM) due to changes in their magneto-ionic environment. We report magneto-ionic variations of FRB 20220529, a repeating FRB from a disk galaxy at redshift 0.18. For the first 17 months of observations, the RM had a median of 17 radians per square meter (rad m-2) and a scatter of 101 rad m-2. In December 2023, the RM jumped to 1977 ± 84 rad m-2, then gradually returned to typical values within 2 weeks. This sudden RM variation indicates that a dense magnetized clump of plasma passed across the line of sight. We discuss potential explanations, including a coronal mass ejection from a companion star, high plasma turbulence, or binary orbital motion.

Abstract Copyright: © 2026 American Association for the Advancement of Science. All rights reserved. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER.

Journal keyword(s):

Simbad objects: 10

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Number of rows : 10
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 FRB 20220529A rB 01 16 25.014 +20 37 56.60           ~ 15 0
2 PSO J019.1046+20.6326 G 01 16 25.10482800 +20 37 57.5499720           ~ 1 0
3 FRB 20180916B rB 01 58 00.750 +65 43 00.30           ~ 457 0
4 * bet Per SB* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1265 1
5 FRB 20201124A rB 05 07 57.600 +26 11 24.00           ~ 307 0
6 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
7 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
8 FRB 20190520B rB 16 02 04.270 -11 17 17.32           ~ 211 0
9 NAME Sgr 1935+2154 * 19 34 55.68 +21 53 48.2           ~ 820 1
10 FRB 200428 rB 19 35.0 +21 57           ~ 291 0

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