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Testing ΛCDM versus Dynamical Dark Energy in 1 Yr: A DESI Spectroscopic Follow-up Program for Rubin Supernovae

  • Authors: Jannik Truong, Greg Aldering, Saul Perlmutter, David Rubin, David Schlegel

Jannik Truong et al 2026 The Astrophysical Journal 1009 .

  • Provider: AAS Journals

Caption: Figure 9.

The nightly observable area of DESI and DESI-II footprints within LSST-WFD in 2027, requiring object altitude >30° and Sun altitude <−15° at both sites.

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