2025ApJ...986....7B

Query : 2025ApJ...986....7B

2025ApJ...986....7B - Astrophys. J., 986, 7 (2025/June-2)

The Atacama Cosmology Telescope: Systematic Transient Search of Single Observation Maps.

BIERMANN E., LI Y., NAESS S., CHOI S.K., CLARK S.E., DEVLIN M., DUNKLEY J., GALLARDO P.A., GUAN Y., FOSTER A., HASSELFIELD M., HERVIAS-CAIMAPO C., HILTON M., HINCKS A.D., HO A.Y.Q., HOOD II J.C., HUFFENBERGER K.M., KOSOWSKY A., NIEMACK M.D., ORLOWSKI-SCHERER J., PAGE L., PARTRIDGE B., SALATINO M., SIFON C., STAGGS S.T., VARGAS C. and WOLLACK E.J.

Abstract (from CDS):

We conduct a systematic search for astrophysical transients using data from the Atacama Cosmology Telescope. The data were taken from 2017 to 2022 in three frequency bands spanning 77 to 277 GHz. In this paper, we present a pipeline for transient detection using single-observation maps where each pixel of a map contains one observation with an integration time of approximately 4 minutes. We detect 34 transient events at 27 unique locations. All but two of the transients are associated with Galactic stars and exhibit a wide range of properties. We also detect an event coincident with the classical nova YZ Ret and one event consistent with a flaring active galactic nucleus. We notably do not detect any reverse shock emission from gamma-ray bursts, a nondetection that may be in tension with current models.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar flares - Transient sources - Classical novae - Asteroids - Millimeter astronomy - Transient detection - Active galactic nuclei

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 36

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Number of rows : 36
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 V* DV Psc SB* 00 13 09.2040936096 +05 35 43.006765344   11.61 10.61 10.312 9.131 K5Ve 76 0
2 * 39 Cet RS* 01 16 36.2879453688 -02 30 01.328624496   6.310 5.428     G6III:eFe-2 269 0
3 HD 22468 RS* 03 36 47.2904292073 +00 35 15.943692002 7.09 6.79 5.90     K2:Vnk 1206 0
4 V* YZ Ret No* 03 58 29.5511765184 -54 46 41.230757208 15.54 16.588 16.680     sdB?/DA? 76 0
5 V* EI Eri RS* 04 09 40.8923562192 -07 53 34.175993568   7.71 7.04     G3V 298 0
6 CD-57 1054 PM* 05 00 47.1296589456 -57 15 25.452888732   11.36 9.977 9.889 8.177 M0Ve 143 0
7 HD 34736 Pu* 05 19 21.2291969760 -07 20 50.042070348   7.74 7.82     ApSi 50 0
8 ACT-T J060702+174157 ev 06 07 02.5 +17 41 57           ~ 1 0
9 ACT-T J060757-542626 ev 06 07 57.4 -54 26 27           ~ 1 0
10 ACT-T J070038-111436 ev 07 00 38.0 -11 14 36           ~ 3 0
11 G 9-38B PM* 08 58 15.1481318983 +19 45 45.836723938     13.75     M7V 58 0
12 V* AD Leo PM* 10 19 36.2808181226 +19 52 12.010446571   10.82 9.52 9.19   dM3 1469 1
13 ZTF J125045.11+113337.4 RS* 12 50 45.1363725773 +11 33 37.104661700   14.088 12.966 12.551   ~ 8 0
14 BD+13 2618 RS* 13 00 46.5566863405 +12 22 32.677229903 12.314 11.233 9.750 8.785 7.653 M0V 383 1
15 HD 113714 RS* 13 05 29.1176541672 +12 49 35.527453032   10.96 10.11 9.66 9.209 G4V 14 2
16 StKM 1-1155 LM* 14 25 55.9329900624 +14 12 10.113682644   12.13 11.05 10.62   M0.0Ve 30 0
17 SN 2018cow SN* 16 16 00.254 +22 16 05.10           SNIb 305 0
18 V* V2700 Oph BY* 16 51 22.1500864896 -00 50 01.222342512   12.71 11.70 11.36   ~ 2 0
19 V* V1274 Her BY* 17 33 53.1782383296 +16 55 13.066432788   16.13 14.38 14.04 10.896 M6V 63 0
20 BD+02 3384 Ro* 17 41 46.1694524808 +02 28 56.100551664   10.53 9.481   8.105 G9III 10 0
21 1SWASP J175954.36+104418.9 BY* 17 59 54.3649766616 +10 44 18.914053956   11.80 10.76 10.20   ~ 3 0
22 HD 347929 Ro* 18 07 24.1177687944 +19 42 22.910505948   10.18 9.099 8.55 7.664 K0 19 1
23 2MASS J18151564-4927472 PM* 18 15 15.6448794120 -49 27 47.301999804   14.396 12.838     M3 23 0
24 V* V5668 Sgr No* 18 36 56.827920 -28 55 39.97524       16.028   ~ 142 0
25 ACT-T J190222-053610 ev 19 02 22.5 -05 36 10           ~ 1 0
26 HD 182928 Ro* 19 28 32.0144837544 -35 07 58.851926832   10.48 9.708   8.636 G8IIIe 20 0
27 HD 185510 RS* 19 39 38.8187091672 -06 03 49.460337108   9.44 8.235   6.967 K0III+sdB 119 0
28 2MASX J19495127-3635239 LIN 19 49 51.277 -36 35 23.97   17.02   15.53   ~ 7 0
29 HD 191179 SB* 20 07 59.2228999608 +16 09 58.128238548   9.18 8.371   7.397 G5 27 0
30 V* V1974 Cyg No* 20 30 31.6546001712 +52 37 50.837478240           ~ 597 0
31 ASAS J203622+1215.3 BY* 20 36 21.9978071472 +12 15 39.497314824   10.74 9.33 9.34 8.335 ~ 5 0
32 V* BO Mic BY* 20 47 45.0056152368 -36 35 40.769832192   10.39 9.337   8.216 K3V(e) 214 0
33 V* TX PsA PM* 22 45 00.0641595504 -33 15 26.091533124   14.93 13.36 12.095 10.379 M5IVe 85 0
34 V* IM Peg RS* 22 53 02.2663977960 +16 50 28.300547040   7.024 5.890     K2III 357 1
35 ACT-T J225302+165027 ev 22 53 02.3 +16 50 27           ~ 1 0
36 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2

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