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GCN Circular 42033

Subject
LIGO/Virgo/KAGRA S250830bp: SOAR spectroscopy of two DESGW candidates
Event
LIGO/Virgo/KAGRA S250830bp
Date
2025-09-30T21:11:30Z (2 days ago)
From
Hemanth kumar <hemanth.bommireddy195@gmail.com>
Via
Web form
Hemanth Bommireddy (U de Chile), Regis Cartier (UA), Felipe Olivares (U Hawaii), reporting on behalf of the Dark Energy Survey Gravitational Wave (DESGW) spectroscopy team:


We report on AT2025wzx and AT2025wpo, which were observed by SOAR 2025-09-10T03:10:05 UTC (PI Bommireddy). We clearly see broad Halpha and Hbeta in AT2025wzx, securing its classification as an AGN at z~0.23, thus, we therefore conclude this candidate to be far too distant to be associated with S250830bp (GCN 41607). In contrast, AT2025wpo shows a noisy featureless spectrum, preventing a firm classification.

We thank SOAR Staff for supporting these observations.
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