2020MNRAS.498.3624L

Query : 2020MNRAS.498.3624L

2020MNRAS.498.3624L - Mon. Not. R. Astron. Soc., 498, 3624-3632 (2020/November-1)

Constraints on the electron-to-proton mass ratio variation at the epoch of reionization.

LEVSHAKOV S.A., KOZLOV M.G. and AGAFONOVA I.I.

Abstract (from CDS):

Far-infrared fine-structure transitions of [C I] and [C II] and rotational transitions of CO are used to probe hypothetical variations of the electron-to-proton mass ratio µ = me/mp at the epoch of reionization (z > 6). A constraint on Δµ/µ = (µobs - µlab)/µlab = (0.7 ± 1.2) x 10–5 (1σ) obtained at {bar}z = 6.31 is the most stringent up-to-date limit on the variation of µ at such high redshift. For all available estimates of Δµ/µ ranging between z = 0 and z ∼ 1100, the epoch of recombination, a regression curve Δµ/µ = kµ(1 + z)p, with kµ = (1.6 ± 0.3) x 10–8 and p = 2.00 ± 0.03, is deduced. If confirmed, this would imply a dynamical nature of dark matter/dark energy.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): elementary particles - techniques: spectroscopic - quasars: individual: (J0439+1634, J2310+1855) - cosmological parameters - cosmology: observations

Simbad objects: 27

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Number of rows : 27
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 QSO B0027-1836 QSO 00 30 23.6259434280 -18 19 56.117225244   18.2 17.9     ~ 56 0
2 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
3 QSO B0132-097 QSO 01 34 35.6657627616 -09 31 02.903742300   24.52 22.70 20.80   ~ 113 2
4 6C 021803+354230 BLL 02 21 05.4920852208 +35 56 13.848581904   20.0 20.0 19.60   ~ 603 3
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
6 QSO B0347-383 QSO 03 49 43.6603590912 -38 10 30.825444900     17.3     ~ 196 0
7 QSO J0407-4410 QSO 04 07 18.0880236912 -44 10 13.983623724   17.6 17.6     ~ 103 1
8 LDN 1498 DNe 04 11.0 +24 58           ~ 306 0
9 LDN 1521 DNe 04 33.1 +26 06           ~ 64 0
10 [FWY2019] UHS J043947.08+163415.7 QSO 04 39 47.08632 +16 34 16.0140           ~ 59 0
11 4C -02.19 Bla 05 01 12.80988538 -01 59 14.2564557   19.1 18.06 19.04   ~ 624 1
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
13 QSO B0528-2505 Bla 05 30 07.9627395840 -25 03 29.900044512   18.17 17.34 17.7   ~ 429 1
14 QSO B0642-5038 QSO 06 43 27.0080170248 -50 41 12.811001244     18.5     ~ 47 0
15 QSO B0908+0603 QSO 09 11 27.6052 +05 50 54.281   18.44 18.16     ~ 248 2
16 [CRR2012] HLS J091828.6+514223 G 09 18 28.60 +51 42 23.3           ~ 43 0
17 SDSS J114816.64+525150.3 QSO 11 48 16.647 +52 51 50.31   25.73 25.04     ~ 487 0
18 QSO B1202-074 QSO 12 05 23.1360370080 -07 42 32.759842896     17.5     ~ 389 5
19 SDSS J123714.60+064759.5 QSO 12 37 14.6105371632 +06 47 59.612187624   19.66 19.15     ~ 63 0
20 QSO B1413+135 BLL 14 15 58.81751033 +13 20 23.7128587   21.055 20.000 18.461   ~ 476 1
21 QSO J1443+2724 QSO 14 43 31.1697928632 +27 24 36.768781008     19.3     ~ 94 0
22 NVSS J175333-283536 Rad 17 53 33.7 -28 35 37           ~ 4 1
23 QSO B1830-211 Bla 18 33 39.9399138048 -21 03 39.368838780     18.70 21   ~ 724 1
24 SDSS J212329.46-005052.9 QSO 21 23 29.4639412848 -00 50 52.916363736   16.91 16.62     ~ 131 0
25 SDSS J231038.88+185519.7 QSO 23 10 38.888 +18 55 19.72           ~ 107 0
26 QSO J2340-0053 QSO 23 40 23.6700032496 -00 53 27.001299696   18.26 17.93     ~ 109 1
27 QSO B2348-0108 QSO 23 50 57.8771296800 -00 52 09.886281492   19.23 18.77 18.7   ~ 152 0

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