2023ApJ...949..113G

Query : 2023ApJ...949..113G

2023ApJ...949..113G - Astrophys. J., 949, 113 (2023/June-1)

Identifying Tidal Disruption Events with an Expansion of the FLEET Machine-learning Algorithm.

GOMEZ S., VILLAR V.A., BERGER E., GEZARI S., VAN VELZEN S., NICHOLL M., BLANCHARD P.K. and ALEXANDER K.D.

Abstract (from CDS):

We present an expansion of FLEET, a machine-learning algorithm optimized to select transients that are most likely tidal disruption events (TDEs). FLEET is based on a random forest algorithm trained on both the light curves and host galaxy information of 4779 spectroscopically classified transients. We find that for transients with a probability of being a TDE, P(TDE) > 0.5, we can successfully recover TDEs with ≈40% completeness and ≈30% purity when using their first 20 days of photometry or a similar completeness and ≈50% purity when including 40 days of photometry, an improvement of almost 2 orders of magnitude compared to random selection. Alternatively, we can recover TDEs with a maximum purity of ≈80% and a completeness of ≈30% when considering only transients with P(TDE) > 0.8. We explore the use of FLEET for future time-domain surveys such as the Legacy Survey of Space and Time on the Vera C. Rubin Observatory (Rubin) and the Nancy Grace Roman Space Telescope (Roman). We estimate that ∼104 well-observed TDEs could be discovered every year by Rubin and ∼200 TDEs by Roman. Finally, we run FLEET on the TDEs from our Rubin survey simulation and find that we can recover ∼30% of them at redshift z < 0.5 with P(TDE) > 0.5, or ∼3000 TDEs yr–1 that FLEET could uncover from the Rubin stream. We have demonstrated that we will be able to run FLEET on Rubin photometry as soon as this survey begins. FLEET is provided as an open source package on GitHub: https://github.com/gmzsebastian/FLEET.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Black hole physics - Supernovae - Surveys

Simbad objects: 87

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Number of rows : 87
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 AT 2021zvy ev 00 13 01.223 +19 25 20.54           ~ 1 0
2 AT 2021mhg ev 00 19 42.900 +29 19 00.70           ~ 13 0
3 AT 2021abkx ev 00 25 45.867 +33 41 30.73           ~ 1 0
4 AT 2020mot ev 00 31 13.560 +85 00 31.90           ~ 28 0
5 AT 2021uqv ev 00 32 39.880 +22 32 56.04           ~ 13 0
6 AT 2019aami ev 00 35 43.466 +47 15 33.32           ~ 2 0
7 AT 2021acqt ev 00 53 15.495 +06 14 58.62           ~ 1 0
8 SDSS J010733.63+232834.2 G 01 07 33.6367520523 +23 28 34.282762347           ~ 37 0
9 AT 2021sdu ev 01 11 23.924 +50 34 29.67           ~ 9 0
10 AT 2020bgf ev 02 00 01.650 -13 04 35.68           ~ 1 0
11 AT 2019saj ev 02 04 40.616 +22 35 42.30           ~ 1 0
12 AT 2020riz ev 02 10 30.75 +09 04 26.5           ~ 15 0
13 AT 2020qhs ev 02 17 53.95 -09 36 50.8           ~ 13 0
14 AT 2021ehb ev 03 07 47.806 +40 18 40.57           ~ 42 0
15 AT 2018lni ev 04 09 37.652 +73 53 41.66           ~ 15 0
16 AT 2019qiz ev 04 46 37.880 -10 13 34.92           ~ 143 0
17 AT 2021yte ev 06 55 04.726 +12 38 02.96           ~ 10 0
18 AT 2018lna ev 07 03 18.649 +23 01 44.70           ~ 29 0
19 AT 2018jil ev 07 23 14.261 +36 19 57.36           ~ 1 0
20 SDSS J075654.53+341543.6 G 07 56 54.5382395520 +34 15 43.641537336           ~ 96 0
21 Z 119-12 SyG 08 13 16.9505119752 +22 38 53.905852212           ~ 156 0
22 AT 2018bsi ev 08 15 26.621 +45 35 31.95           ~ 20 0
23 AT 2020aawn ev 08 48 28.926 -25 42 25.92           ~ 1 0
24 AT 2019aamf ev 08 57 01.476 +33 54 53.96           ~ 4 0
25 AT 2020wey ev 09 05 25.88 +61 48 09.2           ~ 45 0
26 AT 2020ygl ev 09 13 12.075 +05 08 04.40           ~ 3 0
27 AT 2020ddv ev 09 58 33.366 +46 54 40.26           ~ 11 0
28 2MASS J10065085+0141342 G 10 06 50.8773292152 +01 41 34.006164648   18.082   17.032   SNII 127 0
29 AT 2021aees ev 10 22 46.259 +30 34 18.29           ~ 1 0
30 AT 2021jsg ev 11 08 36.715 +30 45 40.58           ~ 2 0
31 AT 2019zbt ev 11 09 03.181 +45 00 43.69           ~ 1 0
32 AT 2020ysg ev 11 25 26.03 +27 26 26.2           ~ 15 0
33 SDSS J112849.64+154022.3 G 11 28 49.6469654133 +15 40 22.339118003           ~ 18 0
34 AT 2020afap ev 11 36 33.814 +61 43 39.29           ~ 3 0
35 AT 2019gtm ev 11 40 57.216 -02 17 09.95           ~ 1 0
36 AT 2021crk ev 11 45 06.949 +18 32 25.29           ~ 8 0
37 AT 2021axu ev 11 46 36.356 +30 05 07.43           ~ 9 0
38 AT 2020aexc ev 12 07 13.459 +44 10 15.60           ~ 3 0
39 AT 2021nhq ev 12 33 41.423 +23 15 18.37           ~ 1 0
40 AT 2020dxw ev 12 34 46.593 +31 08 59.76           ~ 1 0
41 AT 2019vcb ev 12 38 56.38 +33 09 57.3           ~ 33 0
42 AT 2021aeuf ev 12 44 06.828 +47 26 42.49           ~ 2 0
43 AT 2019cho ev 12 55 09.210 +49 31 09.93           ~ 16 0
44 AT 2021iqs ev 12 58 28.286 +59 11 58.93           ~ 1 0
45 AT 2019gte ev 13 06 39.42 -01 32 54.4           ~ 6 0
46 AT 2018jbv ev 13 10 45.56 +08 34 04.3           ~ 15 0
47 AT 2021icq ev 13 27 50.732 -05 11 11.00           ~ 1 0
48 AT 2021ldl ev 13 31 54.670 +03 54 03.83           ~ 1 0
49 AT 2021ack ev 13 53 09.988 +09 44 25.35           ~ 3 0
50 AT 2020ocn ev 13 53 53.803 +53 59 49.57           ~ 38 0
51 AT 2021ony ev 14 09 18.280 +37 31 22.06           ~ 1 0
52 SDSS J140941.88+552928.0 AGN 14 09 41.8833027816 +55 29 28.058874792           ~ 55 0
53 AT 2020qfm ev 14 20 09.385 +61 56 16.66           ~ 1 0
54 AT 2019wlv ev 14 22 57.714 +22 54 41.51           ~ 1 0
55 AT 2021jjm ev 14 39 30.646 -27 51 30.19           ~ 5 0
56 AT 2020nmc ev 15 02 56.871 +03 23 11.46           ~ 1 0
57 AT 2019bhf ev 15 09 15.975 +16 14 22.52           ~ 18 0
58 SDSS J152120.08+140410.5 G 15 21 20.0794689096 +14 04 10.555029480           ~ 36 0
59 AT 2020vwl ev 15 30 37.800 +26 58 56.90           ~ 40 0
60 AT 2020pj ev 15 31 34.960 +33 05 41.47           ~ 17 0
61 AT 2018dyk ev 15 33 08.01 +44 32 08.2           ~ 33 0
62 AT 2020mbq ev 15 40 15.26 +25 00 04.8           ~ 7 0
63 AT 2021lsi ev 15 41 59.550 -10 40 56.84           ~ 1 0
64 AT 2021pqg ev 15 42 22.833 -07 43 14.30           ~ 1 0
65 AT 2021nwa ev 15 53 51.279 +55 35 19.67           ~ 13 0
66 AT 2020opy ev 15 56 25.728 +23 22 21.15           ~ 28 0
67 AT 2019mha ev 16 16 27.799 +56 25 56.29           ~ 19 0
68 AT 2021wdh ev 16 21 59.613 +45 20 33.90           ~ 1 0
69 AT 2021gje ev 16 50 07.332 +34 49 07.82           ~ 5 0
70 AT 2020nov ev 16 58 12.970 +02 07 03.04           ~ 17 0
71 AT 2019qdh ev 17 12 12.847 +63 49 14.86           ~ 1 0
72 AT 2018iih ev 17 28 03.930 +30 41 31.42           ~ 26 0
73 AT 2021xbz ev 18 28 29.803 +28 15 35.22           ~ 1 0
74 AT 2019meg ev 18 45 16.180 +44 26 19.21           ~ 22 0
75 2MASS J18590555+4731059 G 18 59 05.55432 +47 31 05.9592           ~ 20 0
76 2MASX J20570298+1412165 G 20 57 02.9650698480 +14 12 16.295014080           ~ 162 0
77 AT 2019enj ev 21 27 28.503 +03 16 57.41           ~ 1 0
78 AT 2020kri ev 21 29 36.920 +18 07 52.03           ~ 1 0
79 AT 2021kqp ev 21 46 24.988 +37 18 21.33           ~ 1 0
80 AT 2021qbh ev 21 51 00.901 +31 11 24.74           ~ 1 0
81 AT 2021uhs ev 21 56 10.269 +32 39 39.54           ~ 1 0
82 AT 2020zso ev 22 22 17.130 -07 15 59.08           ~ 30 0
83 AT 2019phf ev 23 02 07.190 -12 47 49.07           ~ 1 0
84 AT 2019lwu ev 23 11 12.305 -01 00 10.71           ~ 17 0
85 AT 2020qmx ev 23 50 26.064 +02 10 22.65           ~ 1 0
86 AT 2021aux ev 23 56 51.861 +19 15 05.93           ~ 1 0
87 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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