2022ApJ...931...88C

Query : 2022ApJ...931...88C

2022ApJ...931...88C - Astrophys. J., 931, 88-88 (2022/June-1)

Redshift Estimation and Constraints on Intergalactic and Interstellar Media from Dispersion and Scattering of Fast Radio Bursts.

CORDES J.M., OCKER S.K. and CHATTERJEE S.

Abstract (from CDS):

A sample of 14 FRBs with measured redshifts and scattering times is used to assess contributions to dispersion and scattering from the intergalactic medium (IGM), galaxy halos, and the disks of host galaxies. The IGM and galaxy halos contribute significantly to dispersion measures (DMs) but evidently not to scattering, which is then dominated by host galaxies. This enables the usage of scattering times for estimating DM contributions from host galaxies and also for a combined scattering-dispersion redshift estimator. Redshift estimation is calibrated using the scattering of Galactic pulsars after taking into account different scattering geometries for Galactic and intergalactic lines of sight. The DM-only estimator has a bias of ∼0.1 and rms error of ∼0.15 in the redshift estimate for an assumed ad hoc value of 50 pc cm^–3 for the host galaxy's DM contribution. The combined redshift estimator shows less bias by a factor of 4 to 10 and a 20%-40% smaller rms error. We find that values for the baryonic fraction of the ionized IGM f_igm ≃ 0.85 ± 0.05 optimize redshift estimation using dispersion and scattering. Our study suggests that 2 of the 14 candidate galaxy associations (FRB 20190523A and FRB 20190611B) should be reconsidered.

Journal keyword(s): Radio pulsars - Radio transient sources - Radio bursts - Intergalactic medium - Interstellar scattering - Interstellar medium - Baryon density - Interstellar plasma

Simbad objects: 32

Full paper

View the references in ADS

Number of rows : 32

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag I	Sp type	#ref 1850 - 2026	#notes
1	SDSS J015800.28+654253.0	G	01 58 00.28512	+65 42 53.0964				~	17	0
2	FRB 20180916B	rB	01 58 00.750	+65 43 00.30				~	457	0
3	FRB 20191221A	rB	02 57 21.600	+79 43 12.00				~	34	0
4	NAME Magellanic Clouds	GrG	03 00	-71.0				~	7988	0
5	FRB 20201124A	rB	05 07 57.600	+26 11 24.00				~	307	0
6	NAME FRB 20201124A Host Galaxy	G	05 08 03.49512	+26 03 37.9008				~	24	0
7	FRB 20181119D	rB	05 31 58.6980	+33 08 52.588				~	933	0
8	NAME FRB 121102 host galaxy	G	05 31 58.698	+33 08 52.60				~	35	0
9	NAME Gal Anticenter	reg	05 46	+28.9				~	1024	0
10	M 81	Sy2	09 55 33.1726556496	+69 03 55.062505368	7.89	6.94		~	4725	3
11	FRB 20200120E	rB	09 57 56.7	+68 49 32				~	219	0
12	NAME FRB 190714 host galaxy	G	12 15 55.00	-13 01 16.0				~	7	0
13	FRB 190714	rB	12 15 55.1	-13 01 16				~	64	0
14	PSO J207.0643+72.4708	G	13 48 15.4	+72 28 15				~	6	0
15	FRB 190523	rB	13 48 15.6	+72 28 11				~	109	0
16	NAME FRB 200430 host galaxy	G	15 18 49.53	+12 22 35.8				~	7	0
17	FRB 200430	rB	15 18 49.54	+12 22 36.8				~	59	0
18	FRB 20190520B	rB	16 02 04.270	-11 17 17.32				~	211	0
19	FRB 190611	rB	21 22 58.91	-79 23 51.3				~	82	0
20	NAME FRB 190611 host galaxy	G	21 22 58.91	-79 23 51.3				~	7	0
21	NAME FRB 190102 host galaxy	G	21 29 39.58	-79 28 32.5				~	10	0
22	FRB 190102	rB	21 29 39.76	-79 28 32.5				~	83	0
23	FRB 191001	rB	21 33 24.373	-54 44 51.40				~	64	0
24	NAME FRB 191001 host galaxy	G	21 33 24.444240	-54 44 54.65400				~	11	0
25	FRB 180924	rB	21 44 25.255	-40 54 00.10				~	140	0
26	NAME FRB 180924 host galaxy	G	21 44 25.29	-40 54 01.1				~	16	0
27	FRB 181112	rB	21 49 23.630	-52 58 15.39				~	131	0
28	DES J214923.66-525815.2	G	21 49 23.660	-52 58 15.28			21.51	~	9	0
29	NAME FRB 190711 host galaxy	G	21 57 40.6	-80 21 29				~	5	0
30	FRB 20190711A	rB	21 57 40.7	-80 21 29				~	114	0
31	FRB 190608	rB	22 16 04.74	-07 53 53.6				~	102	0
32	NAME FRB 190608 host galaxy	Sy1	22 16 04.8973879488	-07 53 55.925178972	18.22	17.79		~	18	0

To bookmark this query, right click on this link: simbad:objects in 2022ApJ...931...88C and select 'bookmark this link' or equivalent in the popup menu