110 citations
- Chinese Academy of SciencesCN29 papers
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- Beijing Normal UniversityCN5 papers
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astro-ph.GA2026
Discovery of an Unbound Flyby Companion of UBC 63: In the Immediate Aftermath of a Close Encounter
Samrat Biswas, Biman J Medhi, Sergio Messina +8
We re-investigate the open cluster UBC 63 using the Gaia DR3 data and show that, rather than being a single cluster as previously classified, it is a compelling candidate for a dou…
astro-ph.CO2026★ 1 cited
A model-independent test of the cosmic distance-duality relation using galaxy clusters and Type Ia supernovae matched pairs
Jian Hu, Yi Liu, Jian-Ping Hu +1
The cosmic distance-duality relation (CDDR), expressed as , is a fundamental relation in cosmology connecting luminosity distance () and angular diame…