As part of the ongoing development of a TDE detection pipeline for the Fink collaboration, we have identified AT 2023adr as a candidate TDE. It was previously identified as a SLSN candidate (https://www.wis-tns.org/astronotes/astronote/2023-26) due to its slow rise and its brightness. A second study (Aleo et al. 2024) invoked its blue color to justify that it might be a mis-identified TDE.
An inspection of the most recent ZTF exposures revealed a late re-brightening, about a year after the initial burst (https://fink-portal.org/ZTF22abzajwl). This second peak followed roughly the same shape as the first one, reaching a peak difference magnitude in g band of ~18.8 mag (one magnitude fainter than the first peak). The blue color and long timescales of the lightcurve, associated with the repeated peaks, lead us to classify AT 2023adr as a repeated partial TDE.
We have requested X-ray follow-up with Swift. Additional follow-up is encouraged.
| 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 | 2023adr | 14:36:19.830 | +32:23:16.48 | TDE | 0.131 | 14:36:19.830 | +32:23:16.48 | 0.131 |
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