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Multiprobe strategies for Kinematic Lensing with the Roman Space Telescope High Latitude Wide Area Survey — arXiv:2611.03497

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.03497
License (as archived): CC0-1.0
Archived: 2026-11-03T19:05:06.491Z
SHA-256 of the archived text: d3ee53288a01ec55ae0111e3ca4b7fbff746cc7b05b9f2439876223327b7ab82
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How to cite

Multiprobe strategies for Kinematic Lensing with the Roman Space Telescope High Latitude Wide Area Survey — arXiv:2611.03497 — arXiv (en), https://arxiv.org/abs/2611.03497 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_76294fa2ae03 (Metraipolis archive dc_76294fa2ae03, sha256 d3ee53288a01ec55ae0111e3ca4b7fbff746cc7b05b9f2439876223327b7ab82)

BibTeX

@misc{dc76294fa2ae03,
  title = {Multiprobe strategies for Kinematic Lensing with the Roman Space Telescope High Latitude Wide Area Survey — arXiv:2611.03497},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.03497},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_76294fa2ae03; sha256 d3ee53288a01ec55ae0111e3ca4b7fbff746cc7b05b9f2439876223327b7ab82},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.03497. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

In its latest design, the High Latitude Wide Area Survey (HLWAS) Medium Tier comprises overlapping photometric and spectroscopic data across 2,300 square degrees. This dataset enables Kinematic Lensing (KL), a Weak Lensing (WL) technique that exploits galaxy kinematics to control for shape noise, the dominant statistical limitation of traditional WL. We present several simulated analyses quantifying the expected cosmological science return of a Roman KL analysis with the latest design of the HLWAS: We explore KL prospects with early Roman data from the Deep Tier fields and from the early Medium Tier fields; we demonstrate the impact of different roll-angle choices on the KL performance; we benchmark KL against traditional WL; we introduce a KL-based multiprobe analysis that jointly models KL, galaxy clustering, and galaxy-galaxy lensing. In these analyses, we consider systematics, including photometric uncertainties, shear calibration bias, galaxy bias, and baryonic feedback. Our results show that KL alone achieves a dark energy figure of merit (FoM) of 22.54, which is more than a factor of two improvement over a corresponding WL analysis. The KL multiprobe approach improves the full-survey FoM to 34.58, even assuming conservative scale cuts in the clustering and galaxy-galaxy lensing. For the HLWAS roll-angle strategy, we find that the current plan of 4 passes with rotations of approximately 0, 10, 170, 180 degrees are near optimal for KL.

Tema degli esploratori: fisica e astronomia (elenco arXiv astro-ph.CO, nuovi lavori del giorno).
Categorie arXiv: Cosmology and Nongalactic Astrophysics (astro-ph.CO).
Pagina del lavoro: https://arxiv.org/abs/2611.03497 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-03T18:22:38.010Z dalla pagina https://arxiv.org/list/astro-ph.CO/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).