2016ApJ...830L..31Y

Query : 2016ApJ...830L..31Y

2016ApJ...830L..31Y - Astrophys. J., 830, L31-L31 (2016/October-3)

Extracting host galaxy dispersion measure and constraining cosmological parameters using fast radio burst data.

YANG Y.-P. and ZHANG B.

Abstract (from CDS):

The excessive dispersion measures (DMs) and high Galactic latitudes of fast radio bursts (FRBs) hint toward a cosmological origin of these mysterious transients.
Method. of using measured DM and redshift z to study cosmology have been proposed, but one needs to assume a certain amount of DM contribution from the host galaxy (DMHG) in order to apply those methods. We introduce a slope parameter β(z)\equivdln\langleDME>/dlnz (where DME is the observed DM subtracting the Galactic contribution), which can be directly measured when a sample of FRBs have z measured. We show that \langleDMHG>can be roughly inferred from β and the mean values, E>and \barz, of the sample. Through Monte Carlo simulations, we show that the mean value of local host galaxy DM, \langleDMHG,loc>, along with other cosmological parameters (mass density Ωm in the ΛCDM model, and the IGM portion of the baryon energy density ΩbfIGM), can be independently measured through Markov Chain Monte Carlo fitting to the data.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): cosmological parameters - intergalactic medium - intergalactic medium

Simbad objects: 1

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Number of rows : 1
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 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0

Query : 2016ApJ...830L..31Y

Basic data :
FRB 20181119D -- Radio Burst
Other object types: otypes_help 		rB (2014ApJ,FRB)
ICRS coord. (ep=J2000) : 		05 31 58.6980 +33 08 52.588 (Radio) [ 1.440 14.400 ] E 2021ApJS..257...59C
FK4 coord. (ep=B1950 eq=1950) : 		05 28 41.7223 +33 06 43.244 [ 1.440 14.400 ]
Gal coord. (ep=J2000) : 		174.8795244 -00.2218683 [ 1.440 14.400 ]
Radial velocity / Redshift / cz : 		V(km/s) 52119 [~] / z(~) 0.192 [~] / cz 57560 [~]
   D 2023ApJ...948...67B
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FRB 20121102A FRB 20181119D FRB 121102

References (933 between 1850 and 2026) (Total 933)
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