2019MNRAS.484..648P


Query : 2019MNRAS.484..648P

2019MNRAS.484..648P - Mon. Not. R. Astron. Soc., 484, 648-658 (2019/March-3)

Exoplanet transits with next-generation radio telescopes.

POPE B.J.S., WITHERS P., CALLINGHAM J.R. and VOGT M.F.

Abstract (from CDS):

Nearly everything we know about extrasolar planets to date comes from optical astronomy. While exoplanetary aurorae are predicted to be bright at low radio frequencies (<1 GHz), we consider the effect of an exoplanet transit on radio emission from the host star. As radio emission from solar-like stars is concentrated in active regions, a planet occulting a star-spot can cause a disproportionately deep transit which should be detectable with major radio arrays currently under development, such as the Square Kilometre Array (SKA). We calculate the radiometric sensitivity of the SKA stages and components, finding that SKA2-Mid can expect to detect transits around the very nearest solar-like stars and many cool dwarfs. The shape of this radiometric light curve will be affected by scintillation and lensing from the planet's magnetosphere and thereby encode magnetospheric parameters. Furthermore, these transits will also probe the distribution of stellar activity across a star's surface, and will help scrub out contamination from stellar activity on exoplanet transmission spectra and radial velocity spectra. This radio window on exoplanets and their host stars is therefore a valuable complement to existing optical tools.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): planet-star interactions

Simbad objects: 22

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Number of rows : 22
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * eta Cas PM* 00 49 06.2907161 +57 48 54.675740 4.04 4.02 3.44 2.94 2.58 F9V 609 0
2 * tau Cet PM* 01 44 04.0834226 -15 56 14.926552 4.43 4.22 3.50 2.88 2.41 G8V 1131 1
3 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1752 1
4 * omi02 Eri Er* 04 15 16.3197260 -07 39 10.338087 5.69 5.25 4.43 3.74 3.29 K0V 757 0
5 NGTS-1b Pl 05 30 51.4522866697 -36 37 50.896558281           ~ 31 0
6 * pi. Men PM* 05 37 09.8851202601 -80 28 08.831347245   6.25 5.67     G0V 264 1
7 HATS-6b Pl 05 52 35.2366541380 -19 01 53.970515066           ~ 37 0
8 NAME SEP reg 06 00 00.000 -66 33 38.55           ~ 131 0
9 PSR B1257+12 Psr 13 00 03.1075 +12 40 55.155           ~ 484 1
10 NAME Proxima Centauri b Pl 14 29 42.9451234609 -62 40 46.170818907           ~ 259 0
11 * alf Cen ** 14 39 29.71993 -60 49 55.9990   0.4 -0.1     G2V+K1V 857 0
12 LP 914-54 Er* 14 56 38.2643948965 -28 09 48.622430247     17.141 14.863 12.433 M7.0Ve 141 0
13 CoRoT-2 * 19 27 06.4944821296 +01 23 01.357597206   13.422 12.568 12.204 11.49 G7V+K9V 220 2
14 Kepler-45b Pl 19 31 29.4966619067 +41 03 51.356309221           ~ 66 1
15 BD+47 2936b Pl 19 50 50.2474562793 +48 04 51.097364378           ~ 326 1
16 BD+47 2936 EB* 19 50 50.2474562793 +48 04 51.097364378       8.8   K4V 234 2
17 Kepler-17 Ro* 19 53 34.8642919207 +47 48 54.049941399   14.6   13.6   G5V 123 1
18 HD 189733 BY* 20 00 43.7130382888 +22 42 39.071811263 9.241 8.578 7.648 7.126 6.68 K2V 768 1
19 HD 189733b Pl 20 00 43.7130382888 +22 42 39.071811263           ~ 1186 1
20 LHS 3844 PM* 22 41 58.1173365142 -69 10 08.320922853   17.3       ~ 29 0
21 TRAPPIST-1 LM* 23 06 29.3684052886 -05 02 29.031690445     18.798 16.466 14.024 M7.5e 611 0
22 NAME SCP reg ~ ~           ~ 72 0

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2021.08.02-14:18:37

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