A Caltech Library Service

Probing the Intergalactic Medium with Fast Radio Bursts

Zheng, Z. and Ofek, E. O. and Kulkarni, S. R. and Neill, J. D. and Juric, M. (2014) Probing the Intergalactic Medium with Fast Radio Bursts. Astrophysical Journal, 797 (1). Art. No. 71. ISSN 0004-637X.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Submitted Version
See Usage Policy.

[img] PDF - Erratum
See Usage Policy.


Use this Persistent URL to link to this item:


The recently discovered fast radio bursts (FRBs), presumably of extragalactic origin, have the potential to become a powerful probe of the intergalactic medium (IGM). We point out a few such potential applications. We provide expressions for the dispersion measure and rotation measure as a function of redshift, and we discuss the sensitivity of these measures to the He II reionization and the IGM magnetic field. Finally, we calculate the microlensing effect from an isolated, extragalactic stellar-mass compact object on the FRB spectrum. The time delays between the two lensing images will induce constructive and destructive interference, leaving a specific imprint on the spectra of FRBs. With a high all-sky rate, a large statistical sample of FRBs is expected to make these applications feasible.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Ofek, E. O.0000-0002-6786-8774
Kulkarni, S. R.0000-0001-5390-8563
Neill, J. D.0000-0002-0466-1119
Juric, M.0000-0003-1996-9252
Additional Information:© 2014 American Astronomical Society. Received 2014 September 9; accepted 2014 October 13; published 2014 November 25. We thank Shude Mao for useful comments. Z.Z. was partially supported by NSF grant AST-1208891 and NASA grant NNX14AC89G. M.J. acknowledges the support of the Washington Research Foundation through its Data Science Chair and the University of Washington Provost’s Initiative in Data-Intensive Discovery. E.O.O. is incumbent of the Arye Dissentshik career development chair and is grateful to support by grants from the Willner Family Leadership Institute Ilan Gluzman (Secaucus, NJ), Israeli Ministry of Science, Israel Science Foundation, Minerva and the I-CORE Program of the Planning and Budgeting Committee, and The Israel Science Foundation. S.R.K. thanks the hospitality of the Institute for Advanced Study (IAS). The sylvan surroundings and verdant intellectual ambiance of IAS resulted in a fecund mini-sabbatical stay (Fall 2007).
Group:Space Astrophysics Laboratory
Funding AgencyGrant Number
Washington Research FoundationUNSPECIFIED
University of WashingtonUNSPECIFIED
Willner Family Leadership Institute Ilan GluzmanUNSPECIFIED
Ministry of Science (Israel)UNSPECIFIED
Israel Science FoundationUNSPECIFIED
I-CORE Program of the Planning and Budgeting CommitteeUNSPECIFIED
Subject Keywords:cosmology: miscellaneous; intergalactic medium; pulsars: general; radio continuum: general
Issue or Number:1
Record Number:CaltechAUTHORS:20150105-110011210
Persistent URL:
Official Citation:Probing the Intergalactic Medium with Fast Radio Bursts Z. Zheng et al. 2014 ApJ 797 71
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53174
Deposited By: Ruth Sustaita
Deposited On:05 Jan 2015 19:16
Last Modified:09 Mar 2020 13:18

Repository Staff Only: item control page