2019ApJ...885L..24C

Query : 2019ApJ...885L..24C

2019ApJ...885L..24C - Astrophys. J., 885, L24-L24 (2019/November-1)

CHIME/FRB discovery of eight new repeating fast radio burst sources.

CHIME/FRB COLLABORATION, ANDERSEN B.C., BANDURA K., BHARDWAJ M., BOUBEL P., BOYCE M.M., BOYLE P.J., BRAR C., CASSANELLI T., CHAWLA P., CUBRANIC D., DENG M., DOBBS M., FANDINO M., FONSECA E., GAENSLER B.M., GILBERT A.J., GIRI U., GOOD D.C., HALPERN M., HILL A.S., HINSHAW G., HOFER C., JOSEPHY A., KASPI V.M., KOTHES R., LANDECKER T.L., LANG D.A., LI D.Z., LIN H.-H., MASUI K.W., MENA-PARRA J., MERRYFIELD M., McKINVEN R., MICHILLI D., MILUTINOVIC N., NAIDU A., NEWBURGH L.B., NG C., PATEL C., PEN U., PINSONNEAULT-MAROTTE T., PLEUNIS Z., RAFIEI-RAVANDI M., RAHMAN M., RANSOM S.M., RENARD A., SCHOLZ P., SIEGEL S.R., SINGH S., SMITH K.M., STAIRS I.H., TENDULKAR S.P., TRETYAKOV I., VANDERLINDE K., YADAV P. and ZWANIGA A.V.

Abstract (from CDS):

We report on the discovery of eight repeating fast radio burst (FRB) sources found using the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope. These sources span a dispersion measure (DM) range of 103.5-1281 pc cm–3. They display varying degrees of activity: six sources were detected twice, another three times, and one 10 times. These eight repeating FRBs likely represent the bright and/or high-rate end of a distribution of infrequently repeating sources. For all sources, we determine sky coordinates with uncertainties of ∼10'. FRB 180916.J0158+65 has a burst-averaged DM = 349.2 ± 0.3 pc cm–3 and a low DM excess over the modeled Galactic maximum (as low as ∼20 pc cm–3); this source also has a Faraday rotation measure (RM) of -114.6 ± 0.6 rad m–2, which is much lower than the RM measured for FRB 121102. FRB 181030.J1054+73 has the lowest DM for a repeater, 103.5 ± 0.3 pc cm–3, with a DM excess of ∼70 pc cm–3. Both sources are interesting targets for multi-wavelength follow-up due to their apparent proximity. The DM distribution of our repeater sample is statistically indistinguishable from that of the first 12 CHIME/FRB sources that have not yet repeated. We find, with 4σ significance, that repeater bursts are generally wider than those of CHIME/FRB bursts that have not repeated, suggesting different emission mechanisms. Many of our repeater events show complex morphologies that are reminiscent of the first two discovered repeating FRBs. The repetitive behavior of these sources will enable interferometric localizations and subsequent host galaxy identifications.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Radio transient sources - Radio bursts - Radio astronomy - Polarimetry - High time resolution astrophysics

Simbad objects: 20

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Number of rows : 20
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 NAME NCP reg 00 00 00 +90 00.0           ~ 216 0
2 FRB 170827 rB 00 49 18.66 -65 33 02.3           ~ 47 0
3 FRB 20180916B rB 01 58 00.750 +65 43 00.30           ~ 457 0
4 SDSS J015840.07+654159.5 G 01 58 40.07112 +65 41 59.5284           ~ 1 0
5 PSR B0329+54 Psr 03 32 59.3370698592 +54 34 45.028206408           ~ 690 1
6 NAME FRB 180814.J0422+73 rB 04 22 44.0 +73 39 52           ~ 112 0
7 NAME FRB 181128.J0456+63 rB 04 55 41.0 +63 15 27           ~ 18 0
8 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
9 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
10 NAME FRB 190209.J0937+77 rB 09 37 16.8000 +77 40 12.000           ~ 14 0
11 NAME FRB 181030.J1054+73 rB 10 33 24.0000 +73 47 24.000           ~ 79 0
12 NGC 3403 GiG 10 53 54.851 +73 41 25.35   13.30       ~ 109 0
13 NAME FRB 181119.J12+65 rB 12 41 52.0 +65 07 02           ~ 26 0
14 NAME FRB 190116.J1249+27 rB 12 49 08.0 +27 08 02           ~ 25 0
15 NAME FRB 181017.J1705+68 rB 17 05 19.2000 +68 16 48.000           ~ 16 0
16 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
17 PSR J1745-2900 Psr 17 45 40.1640 -29 00 29.818           ~ 358 0
18 NAME FRB 190222.J2052+69 rB 20 52 12.0 +69 44 42           ~ 23 0
19 FRB 110523 rB 21 45 31.0 -00 15 23           ~ 91 0
20 NAME Local Arm reg ~ ~           ~ 649 0

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