Galaxy imaging surveys as spin-sensitive detector for cosmological colliders

Kogai K, Akitsu K, Schmidt F, Urakawa Y (2021)
Journal of Cosmology and Astroparticle Physics 2021(3): 060.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Kogai, Kazuhiro; Akitsu, Kazuyuki; Schmidt, Fabian; Urakawa, YukoUniBi
Abstract / Bemerkung
Galaxy imaging surveys provide us with information on both the galaxy distribution and their shapes. In this paper, we systematically investigate the sensitivity of galaxy shapes to new physics in the initial conditions. For this purpose, we decompose the galaxy shape function into spin components, and compute the contributions to each spin component from both intrinsic alignment and weak lensing. We then consider the angular-dependent primordial non-Gaussianity, which is generated by a non-zero integer spin particle when active during inflation, and show that a galaxy imaging survey essentially functions as a spin-sensitive detector of such particles in the early universe. We also perform a forecast of the PNG generated from a higher spin particle, considering a Rubin Observatory LSST-like galaxy survey.
Stichworte
inflation; cosmological perturbation theory; galaxy surveys; gravitational lensing
Erscheinungsjahr
2021
Zeitschriftentitel
Journal of Cosmology and Astroparticle Physics
Band
2021
Ausgabe
3
Art.-Nr.
060
eISSN
1475-7516
Page URI
https://pub.uni-bielefeld.de/record/2954695

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Kogai K, Akitsu K, Schmidt F, Urakawa Y. Galaxy imaging surveys as spin-sensitive detector for cosmological colliders. Journal of Cosmology and Astroparticle Physics. 2021;2021(3): 060.
Kogai, K., Akitsu, K., Schmidt, F., & Urakawa, Y. (2021). Galaxy imaging surveys as spin-sensitive detector for cosmological colliders. Journal of Cosmology and Astroparticle Physics, 2021(3), 060. https://doi.org/10.1088/1475-7516/2021/03/060
Kogai, K., Akitsu, K., Schmidt, F., and Urakawa, Y. (2021). Galaxy imaging surveys as spin-sensitive detector for cosmological colliders. Journal of Cosmology and Astroparticle Physics 2021:060.
Kogai, K., et al., 2021. Galaxy imaging surveys as spin-sensitive detector for cosmological colliders. Journal of Cosmology and Astroparticle Physics, 2021(3): 060.
K. Kogai, et al., “Galaxy imaging surveys as spin-sensitive detector for cosmological colliders”, Journal of Cosmology and Astroparticle Physics, vol. 2021, 2021, : 060.
Kogai, K., Akitsu, K., Schmidt, F., Urakawa, Y.: Galaxy imaging surveys as spin-sensitive detector for cosmological colliders. Journal of Cosmology and Astroparticle Physics. 2021, : 060 (2021).
Kogai, Kazuhiro, Akitsu, Kazuyuki, Schmidt, Fabian, and Urakawa, Yuko. “Galaxy imaging surveys as spin-sensitive detector for cosmological colliders”. Journal of Cosmology and Astroparticle Physics 2021.3 (2021): 060.

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