DRAFT
2025-12-18 15:02:29
Type: Object/s-Discovery/Classification
Bibcode: 2025TNSAN.341....1C
TDE candidates from POTICA
Authors: E. Concepcion, S. Bhattacharyya, A. Gomboc, T. Petrushevska, O. Razim, G. Contardo, E. Umuzigazuba (University of Nova Gorica)
Keywords: Transient, Supernova, TDE
Abstract:
We report two possible TDEs identified by our photometric classifier POTICA (Photometric Optical TDE Identification and Classification Annotator), currently in its testing phase. The lightcurve of AT2025afsj features a month-long rise with relatively blue colours and is currently peaking at 18.4 mag. AT2025agis, although with very limited number of data points, is classified as a potential TDE due to its blue colours and very nuclear location. It seems to be in the fading phase (last g-band point at 19.3 mag). We encourage spectroscopic classification and follow-up of these objects.

POTICA (Photometric Optical TDE Identification and Classification Annotator, pronounced potitsa, a typical Slovenian dessert) is a fast TDE candidate classifier developed by the transient group at the University of Nova Gorica. We fit and extract features from the ZTF lightcurve data and perform a binary classification, mostly based on g-r colour and rise time. The purpose of POTICA is to photometrically select potential TDE candidates and other exotic nuclear transients (AGN flares, BFFs, SLSNe) as early as possible to enable spectroscopic classification and follow-up. POTICA is currently in a testing stage and will be deployed soon on the Lasair broker.

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2025afsj [ZTF18aaxqitv] 12:55:07.090 +34:08:46.70 SDSS J125507.07+340846.6 0.165 12:55:07.057 +34:08:46.95 AGN 0.1654
TNS 2025agis [ZTF18aafhmpq] 07:24:29.556 +08:33:57.57 07:24:29.556 +08:33:57.57 SN Ia 0.107

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