What question did this study set out to answer?

The research aims to identify the presence and characteristics of a molecular hydrogen shell around Nova GK Persei.

Detection of a Molecular Hydrogen Envelope around Nova GK Persei

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Reveals a molecular hydrogen envelope in Nova GK Persei, suggesting an ongoing process of gas recombination.

The research aims to identify the presence and characteristics of a molecular hydrogen shell around Nova GK Persei.
Utilized data from the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx).
Analyzed the S (9) 4.6947 μm emission line for molecular hydrogen detection.
Investigated the spatial relationship between the molecular shell and surrounding nebulosity.
Detected a bipolar molecular hydrogen shell with dimensions 18' × 10'.
Found a filament of emission 45'' southwest of GK Per coinciding with X-ray and radio emission.
Proposed that the molecular hydrogen emission arises from the neutral zone between shock waves.

Banerjee et al. (2026) studied this question.

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