2023Sci...381..961Y

Query : 2023Sci...381..961Y

2023Sci...381..961Y - Science, 381, 961-964 (2023/September-0)

Observations of a black hole x-ray binary indicate formation of a magnetically arrested disk.

YOU B., CAO X., YAN Z., HAMEURY J.-M., CZERNY B., WU Y., XIA T., SIKORA M., ZHANG S.-N., DU P. and ZYCKI P.T.

Abstract (from CDS):

Accretion of material onto a black hole drags any magnetic fields present inwards, increasing their strength. Theory predicts that sufficiently strong magnetic fields can halt the accretion flow, producing a magnetically arrested disk (MAD). We analyzed archival multiwavelength observations of an outburst from the black hole x-ray binary MAXI J1820+070 in 2018. The radio and optical fluxes were delayed compared with the x-ray flux by about 8 and 17 days, respectively. We interpret this as evidence for the formation of a MAD. In this scenario, the magnetic field is amplified by an expanding corona, forming a MAD around the time of the radio peak. We propose that the optical delay is due to thermal viscous instability in the outer disk.

Journal keyword(s):

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	MAXI J1820+070	LXB	18 20 21.9423816480	+07 11 07.284859440						~	511	0

Query : 2023Sci...381..961Y

Basic data :

MAXI J1820+070 -- Low Mass X-ray Binary

X (2022MNRAS,MAXI), MIR (WISEA,WISE), ev (AT,Gaia), LXB (2018ApJ), * (Gaia), NIR (2MASS), Opt (LAMOST)

18 20 21.9423816480 +07 11 07.284859440 (Optical) [ 0.0613 0.0678 90 ] A 2020yCat.1350....0G

18 17 56.5515459820 +07 09 43.917239167 [ 0.0613 0.0678 90 ]

035.8535790606644 +10.1591590860057 [ 0.0613 0.0678 90 ]

-3.093 -6.286 [0.091 0.094 90] A 2020yCat.1350....0G

0.3692 [0.078] A 2020yCat.1350....0G

G 17.386671 [0.031558] C 2020yCat.1350....0G

J 15.867 [0.066] C 2003yCat.2246....0C

H 15.444 [0.102] D 2003yCat.2246....0C

K 15.118 [0.120] D 2003yCat.2246....0C

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`2MASS J18202194+0711073`	`LAMOST J182021.96+071107.2`	`WISEA J182021.94+071107.2`	`Gaia DR2 4477902563164690816`
`ASASSN -18ey`	`MAXI J1820+070`	`WISE J182021.94+071107.2`	`Gaia 18as`
`AT 2018amn`	`TIC 317984780`	`Gaia DR3 4477902563164690816`	`Gaia DR1 4477902563164690816`

References (511 between 1850 and 2026) (Total 511)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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`2MASS J18202194+0711073`	`WISEA J182021.94+071107.2`	`WISE J182021.94+071107.2`	`Gaia DR3 4477902563164690816`	`Gaia DR2 4477902563164690816`
`Gaia DR1 4477902563164690816`

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