Roman Supernova Cosmology

Project Infrastructure Team

Building a pixel to cosmology pipeline for the Roman community and beyond.

The Future of Cosmology with Roman

The Nancy Grace Roman Space Telescope (Roman) is NASA’s next large flagship mission, due for launch no later than May 2027. One of the mission’s key objectives is to determine the expansion history of the universe and to test possible explanations for its apparent acceleration, including dark energy and modifications to general relativity. To achieve this goal, the mission will conduct a generation-defining experiment in time-domain astronomy via a Core Community survey called the High Latitude Time Domain Survey (HLTDS). This survey will enable the discovery and measurements of Type Ia Supernovae (SNe Ia), one of the most mature cosmological probes, up to redshifts of z ≈ 3 and with unparalleled precision and statistical volume.

Combining our knowledge of the Roman instrumentation with our expertise on SN Ia and cosmology, our team will formulate a “pixel-to-cosmology” framework, which will enable the precision required to fully utilize SNe Ia as cosmological probes, and therefore constrain the true nature of dark energy. This framework will deliver pixel-level improvements for calibration, pipelines for light-curve and prism-spectral extraction, precision scene-modeling catalogs, SNe Ia standardization software, transient alerts, and basic HLTDS optimization tools.

Our Deliverables

Simulated Data
Calibration
Photometry
Wide-Field Slitless Spectroscopy
Transient Characterization
Observing Strategy Development
Cosmology Pipeline Analysis
High-Level Value-Added Data to the Community
Science Communication

Meet the Team

Rebekah Hounsell

Co-PI @ UMBC/NASA GSFC
Project Manager
Ben Rose

Co-PI @ Baylor
Chief of Software and Computing
David Rubin

Co-PI @ UHM
Pipeline Science Lead
Dan Scolnic

Co-PI @ Duke
Financial Lead
Diane Markoff

Co-I @ NCCU
Executive Board
Rick Kessler

Co-I @ KICP
Pipeline Development Manager for Simulations & Characterization
Rob Knop

Co-I @ LBL
Pipeline Development Manager for the Database and Observational Strategies
Russell Ryan

Co-I @ STScI
Pipeline Development Manager for Spectroscopy
Executive Board
Michael Wood-Vasey

Co-I @ UPitt
Pipeline Development Manager for Calibrations & Photometry
Masao Sako

Co-I @ UPenn
Photometry co-lead
Executive Board
Charlotte Wood

Co-I @ NC A&T
Photometry co-lead
Justin Pierel

Co-I @ STScI / NASA GSFC
Simulations co-lead
Lauren Aldoroty

Co-I @ Duke
Simulations co-lead
Stefano Casertano

Co-I STScI
Calibration co-lead
Susana Deustua

Co-I @ NIST
Executive Board
Lou Strolger

Co-I @ STScI
Executive Board
Bhavin Joshi

Co-I @ STScI
Spectroscopy lead
Ann Isaacs

Co-I @ UMN
Aleksandar Cikota

Collaborator @ NOIRLab
Adam Riess

Co-I @ JHU
Tri Astraatmadja

Co-I @ STScI
Helen Qu

Co-I @ Upenn
Megan Sosey

Co-I @ STScI
Chief Software Architect
Executive Board
Nao Suzuki

Co-I @ LBL
Ori Fox

Collaborator @ STScI
Wenlei Chen

Co-I @ UMN
Shu Liu

Co-I @ UPitt
Peter Nugent

Collaborator @ LBL
Sebastian Gomez

Co-I @ STScI
Vivian Miranda

Co-I @ Stony Brook
Cosmology lead
Greg Aldering

Co-I @ LBL
Andy Fruchter

Co-I @ STScI
Peter Garnavich

Collaborator @ Notre Dame
Dillon Brout

Co-I @ Boston
Calibration co-lead
Dave Jones

Co-I @ IfA
Characterization lead
Maria Vincenzi

Co-I @ Oxford
Lluis Galbany

Co-I @ ICE-CSIC
Schuyler Van Dyk

Collaborator @ IPAC
Contact for RAPID Team
Saurabh Jha

Collaborator @ Rutgers
Charles Baltay

Co-I @ Yale
Brad Cenko

Collaborator @ NASA GSFC
Tyler Pritchard

Collaborator @ UMCP / NASA GSFC
Saul Perlmutter

Co-I @ LBL
Melissa Shahbandeh

Collaborator @ STScI
Joshua Frieman

Collaborator @ UChicago
Patrick Kelly

Co-I @ UMN
Michael Troxel

Co-I Duke
Lei Hu

Collaborator @ CMU