Research

• Backlighting the gas of galaxies through the Sunyaev-Zel'dovich effect using DESI x ACT data:
  - Kinematic Sunyaev Zel'dovich effect with spectroscopic luminous red galaxies [arXiv]  
  (B. Ried Guachalla, E. Schaan, B. Hadzhiyska, S. Ferraro, DESI + ACT Collaborations), 2025.

- Thermal Sunyaev Zel'dovich effect with spectroscopic luminous red galaxies [arXiv]  
(H. Liu, S. Ferraro, E. Schaan, R. Zhou, ..., B. Ried Guachalla, DESI + ACT Collaborations), 2025.

- Kinematic Sunyaev Zel'dovich effect with photometric luminous red galaxies [arXiv]  
(B. Hadzhiyska, S. Ferraro, B. Ried Guachalla, E. Schaan, DESI + ACT Collaborations), 2024.

• Velocity reconstruction in the era of DESI and Rubin:
  - Part I: Exploring spectroscopic, photometric & hybrid samples [Article] [arXiv]  
  (B. Ried Guachalla, E. Schaan, B. Hadzhiyska and S. Ferraro), 2023.

- Part II: Realistic samples on the light cone [Article] [arXiv]  
(B. Hadzhiyska, S. Ferraro, B. Ried Guachalla and E. Schaan), 2023.

• Cosmological parameter inference: Dealing with priors
  - Informed Total-Error-Minimizing Priors: Interpretable cosmological parameter constraints despite complex nuisance effects [Article] [arXiv]
  (B. Ried Guachalla, Dylan Britt, Daniel Gruen and Oliver Friedrich), 2024.

- Bounds on galaxy stochasticity from halo occupation distribution modeling [Article] [arXiv]
(Dylan Britt, Daniel Gruen, Oliver Friedrich, Sihan Yuan and B. Ried Guachalla), 2024.

I am part of the following collaborations:

• Atacama Cosmology Telescope (ACT)

• Dark Energy Spectroscopic Instrument (DESI)

• LSST Dark Energy Science Collaboration (LSST DESC)

• Simons Observatory (SO)