2020RNAAS...4...95D

Query : 2020RNAAS...4...95D

2020RNAAS...4...95D - Research Notes of the AAS, 4, 95 (2020/June-0)

Spectral Variability of a Soft-intermediate State QPO from MAXI J1820+070.

DAVIS M.C. and STEVENS A.L.

Abstract (from CDS):

Black Hole X-ray binaries are known to exhibit variability in their light curves on timescales as short as milliseconds and as long as months. The short-timescale variability can be in the form of quasi-periodic oscillations (QPOs), which may be produced by general relativistic effects. In this work, we looked at low-frequency QPOs from an exciting recent black hole transient, MAXI J1820+070, which first went into outburst in 2018. This source was observed in a multi-wavelength campaign that included the NICER mission, a soft X-ray telescope attached to the International Space Station. In our analysis, we applied X-ray timing and spectral-timing techniques to help place constraints on the QPO emission mechanism in the extreme environment surrounding the black hole. Although the QPO amplitude was too low to carry out phase-resolved spectroscopy, our work indicates that weak QPOs such as this one may be present in the light curves of many sources.

Journal keyword(s): High time resolution astrophysics - Black holes - Low-mass x-ray binary stars

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 : 2020RNAAS...4...95D

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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