2024ApJ...961..239N

Query : 2024ApJ...961..239N

2024ApJ...961..239N - Astrophys. J., 961, 239 (2024/February-1)

Probing the Subparsec Dust of a Supermassive Black Hole with the Tidal Disruption Event AT 2020mot.

NEWSOME M., ARCAVI I., HOWELL D.A., BURKE J., DE K., DGANY Y., FARIS S., FARAH J., HIRAMATSU D., McCULLY C., PADILLA-GONZALEZ E., PELLEGRINO C. and TERRERAN G.

Abstract (from CDS):

AT 2020mot is a typical UV/optical tidal disruption event (TDE) with no radio or X-ray signatures in a quiescent host. We find an i-band excess and rebrightening along the decline of the light curve which could be due to two consecutive dust echoes from the TDE. We model our observations following van Velzen et al. and find that the near-infrared light curve can be explained by concentric rings of thin dust within ∼0.1 pc of a ∼6 × 106 M⊙ supermassive black hole (SMBH), among the smallest scales at which dust has been inferred near SMBHs. We find dust covering factors of order fc ≤ 2%, much lower than found for dusty tori of active galactic nuclei. These results highlight the potential of TDEs for uncovering the environments around black holes when including near-infrared observations in high-cadence transient studies.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Tidal disruption - Ultraviolet transient sources - Astrophysical dust processes

Simbad objects: 21

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Number of rows : 21
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 Z 500-36 AG? 00 29 57.0542865144 +32 53 37.265932104           ~ 155 0
2 WISEA J003113.52+850031.8 G 00 31 13.54 +85 00 31.8   18.84 17.90     ~ 4 0
3 AT 2020mot ev 00 31 13.560 +85 00 31.90           ~ 28 0
4 SDSS J010733.63+232834.2 G 01 07 33.6367520523 +23 28 34.282762347           ~ 37 0
5 AT 2019qiz ev 04 46 37.880 -10 13 34.92           ~ 143 0
6 PS1-11af ev 09 57 26.815 +03 14 01.00           ~ 71 0
7 2MASS J10065085+0141342 G 10 06 50.8773292152 +01 41 34.006164648   18.082   17.032   SNII 127 0
8 ZW VIII 211 rG 12 48 15.2253025968 +17 46 26.475426228   16.5       ~ 360 0
9 AT 2019cho ev 12 55 09.210 +49 31 09.93           ~ 16 0
10 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 1010 2
11 SDSS J140941.88+552928.0 AGN 14 09 41.8833027816 +55 29 28.058874792           ~ 55 0
12 PSN K0905-001 SN? 14 57 03.10 +49 36 40.8           ~ 85 0
13 AT 2019bhf ev 15 09 15.975 +16 14 22.52           ~ 18 0
14 PS1-10jh ev 16 09 28.296 +53 40 23.52           ~ 153 0
15 iPTF 16axa ev 17 03 34.36 +30 35 36.8           ~ 54 0
16 AT 2018iih ev 17 28 03.930 +30 41 31.42           ~ 26 0
17 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
18 AT 2019meg ev 18 45 16.180 +44 26 19.21           ~ 22 0
19 2MASX J20570298+1412165 G 20 57 02.9650698480 +14 12 16.295014080           ~ 162 0
20 AT 2017eqx ev 22 26 48.370 +17 08 52.40           ~ 30 0
21 AT 2018fyk ev 22 50 16.10 -44 51 53.5           ~ 114 0

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