JWST spectroscopy shows a z=3.2 background galaxy at the position of the fast X-ray transient EP250207b, overturning the earlier z=0.082 merger association.
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A JWST redshift for the host galaxy of EP250207b of z=3.2: a collapsar origin is viable
JWST spectroscopy shows a z=3.2 background galaxy at the position of the fast X-ray transient EP250207b, overturning the earlier z=0.082 merger association.