The SUrvey for Pulsars and Extragalactic Radio Bursts - III. Polarization properties of FRBs 160102 and 151230

被引：52

作者：

Caleb, M. ^{[1
,2
,3
,4
]}

Keane, E. F. ^{[3
,4
,5
]}

Van Straten, W. ^{[6
]}

Kramer, M. ^{[1
,7
]}

Macquart, J. P. ^{[8
]}

Bailes, M. ^{[3
,4
]}

Barr, E. D. ^{[3
,4
,7
]}

Bhat, N. D. R. ^{[4
,8
]}

Bhandari, S. ^{[3
,4
,9
]}

Burgay, M. ^{[10
]}

Farah, W. ^{[3
]}

Jameson, A. ^{[3
,4
]}

Jankowski, F. ^{[1
,3
,4
]}

Johnston, S. ^{[9
]}

Petroff, E. ^{[3
,4
,9
,11
]}

Possenti, A. ^{[10
]}

Stappers, B. W. ^{[1
]}

Tiburzi, C. ^{[12
]}

Krishnan, V. Venkatraman ^{[3
,4
]}

机构：

[1] Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[2] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia

[3] Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia

[4] ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia

[5] SKA Org, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England

[6] Auckland Univ Technol, Inst Radio Astron & Space Res, Private Bag 92006, Auckland 1142, New Zealand

[7] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany

[8] Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia

[9] CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia

[10] INAF, Osservatorio Astron Cagliari, Via Sci 5, I-09047 Selargius, CA, Italy

[11] Netherlands Inst Radio Astron, ASTRON, Postbus 2, NL-7990 AA Dwingeloo, Netherlands

[12] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2018年 / 478卷 / 02期

基金：

欧洲研究理事会; 澳大利亚研究理事会;

关键词：

magnetic fields; polarization; methods: data analysis; surveys; intergalactic medium; SAGITTARIUS-A-ASTERISK; ROTATION MEASURES; FARADAY-ROTATION; MAGNETIC-FIELDS; HOST GALAXY; PULSES; CONSTRAINTS; ORIGIN;

D O I：

10.1093/mnras/sty1137

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the polarization properties of two fast radio bursts (FRBs): 151230 and 160102 discovered in the SUrvey for Pulsars and Extragalactic Radio Bursts (SUPERB) at the Parkes Radio Telescope. FRB 151230 is observed to be 6 +/- 11 per cent circularly polarized and 35 +/- 13 per cent linearly polarized with a rotation measure (RM) consistent with zero. Conversely, FRB 160102 is observed to have a circular polarization fraction of 30 +/- 11 per cent, linear polarization fraction of 84 +/- 15 per cent for RM = -221(6) radm(-2), and the highest measured dispersion measure (2596.1 +/- 0.3 pc cm(-3)) for an FRB to date. We examine possible progenitor models for FRB 160102 in extragalactic, non-cosmological and cosmological scenarios. After accounting for the Galactic foreground contribution, we estimate the intrinsic RM to be -256(9) rad m(-2) in the low-redshift case and similar to-2.4x10(2) rad m(-2) in the high-redshift case. We assess the relative likeliness of these scenarios and how each can be tested. We also place constraints on the scattering measure and study the impact of scattering on the signal's polarization position angle.

引用

页码：2046 / 2055

页数：10

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