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Gregory S. H

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Articles by Gregory S. H

Astrophysics > High Energy Astrophysical Phenomena

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By De Boer, C. M. Tanner, Gregory S. H
| arXiv
We present photometric and spectroscopic follow-up observations of the strongly-lensed H-poor superluminous supernova (SLSN) 2025wny at $z = 2.0155$. We use integral-field Keck-II/KCWI spectroscopy to obtain rest-frame ultraviolet spectra spanning $11$ to $61$ days after maximum light. We use Pan-STARRS photometry to constrain the brightest image's magnification, finding $μ_A=19.4\pm1.6$, a factor of $\sim$2-4 higher than mass-modeling estimates.
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Astrophysics > High Energy Astrophysical Phenomena

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By De Boer, Gregory S. H
| arXiv
Wide-field surveys now report thousands of transients per month, while spectra are obtained for only a few per cent of them. We present DETECT (DESI--Transient Event Cross-matching Tool), a pipeline that turns each Transient Name Server (TNS) alert into a distance-informed candidate within an hour by placing it in the context of the Dark Energy Spectroscopic Instrument (DESI) archive.
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Astrophysics > High Energy Astrophysical Phenomena

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By De Boer, K. Azalee, Gregory S. H
| arXiv
[Submitted on 9 Sep 2026 (v1), last revised 17 Sep 2026 (this version, v2)] View PDF HTML (experimental) Comments: Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); Astrophysics of Galaxies (astro-ph.GA) Cite as: arXiv:2609.09725 [astro-ph.HE] (or arXiv:2609.09725v2 [astro-ph.HE] for this version) https://doi.org/10.48550/arXiv.2609.09725
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Astrophysics > High Energy Astrophysical Phenomena

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By Gregory S. H, van Eerten, De Bom
| arXiv
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