DRAFT
2024-12-11 17:14:12
Type: Object/s-Data/Analysis
Bibcode: 2024TNSAN.364....1S
SWIFT X-ray and UVOT Observations of the Fast Optical Transient AT2024adec
Authors: Jason Sevilla (Cornell), Yi-Jung Yang (NCU), Michael Coughlin (University of Minnesota), Anna Ho (Cornell)
Source Group: ZTF
Keywords: Transient, Supernova, X-rays, Ultra-Violet
Abstract:
We report SWIFT XRT and UVOT observations of a rapidly evolving transient, AT2024adec (ZTF24abvevzs).

Swift XRT observed the position of AT2024adec on 06 Dec 2024 (about 4.5 days after the first optical detection) for an exposure of 4ks, and for a 3ks exposure 1.5 days later.  This resulted in two non-detections with an upper limit of 0.005 ct/s, which corresponds to an upper limit of about 1.8e-13 ergs/cm2/s on the 0.3-10 keV flux and a limit of 4.2e+40 erg/s on the 0.3-10 keV luminosity, assuming a redshift of 0.035.  

SWIFT also obtained a uvm2 measurement of 20.5 +/- 0.2 AB mag on the first exposure, and an upper limit of 19.9 AB mag on the second.  However, these measurements are likely contaminated by the presence of a nearby bright star.

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 2024adec 12:56:57.007 +77:10:26.53 SN IIb 0.035 WISEA J125659.47+771029.8 12:56:57.027 +77:10:26.82 SN IIb 0.035

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