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Author

R. Ortiz

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2 papers indexed here

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Preprint Sep 2026

Constraining the Light Curves of Magnified Stellar Events at z ~ 0.725

Extreme magnification by lensing galaxy clusters allows the detection of high-luminosity stars during cluster caustic transient events at cosmological distances. The Dragon Arc at z=0.725 is a frontier target for identifying transient events due to its high frequency of microlensing events, and so far>100 of these even...

Carter Meyerhoff, H. Williams, R. Ortiz et al. · 0 citations
Preprint Sep 2026

Constraints on the Pop III Sky Surface Brightness from High-Redshift Caustic Transients in MACS0416

Population III (Pop III) stars are hypothetical zero-metallicity stellar structures formed from primordial hydrogen and helium. They are theorized to span a wide mass range, extending to several 100 solar masses, and may have played important roles in nucleosynthesis and reionization. Their expected fluxes are far belo...

Jakob Perivolotis, P. Bergamini, R. Windhorst et al. · 1 citation

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