Bifrost Hack Week @ LPNHE

Oct 5, 2026, 9:00 AM → Oct 9, 2026, 4:00 PM Europe/Paris

LPNHE

Welcome to the Bifrost Hack Week website.

The main goal of the Bifrost Hack Week is to explore, through practical examples, how to extract scene-modeling light curves for Rubin/LSST supernovae from the DM data products.

A second goal is to investigate how the Rubin SN sample can be intercalibrated with existing low-redshift samples, notably ZTF, through comparisons of their calibration star catalogs and bandpass models.

The detailed agenda is still being finalized. We will start with a half-day of presentations and strategy discussions, and then move directly into hands-on hacking for the rest of the week.

 

Mon, October 5

9:30 AM → 10:00 AM Bifrost Hackweek Kickoff

• Presentation of data available and existing processing
- Brief overview of Rubin DRP calibration
- Brief overview of ZTF status
• Quick presentations/discussion of topics for the week:
- Scene modeling
- photometric calibration
- ZTF/Rubin filter work
- any other relevant topic – please prepare a slide or two to introduce your topic to others

Speakers: Clare Saunders (Princeton University), Pierre-Francois Leget (Princeton University)

10:00 AM → 6:00 PM Bifrost Hack

Tue, October 6

9:00 AM → 6:00 PM Bifrost Hack

Wed, October 7

9:00 AM → 6:00 PM Bifrost Hack

Thu, October 8

9:00 AM → 10:30 AM BLOCK 1: Reports from Bifrost Hack Week

9:00 AM Photometric calibration progress

Speaker: Benjamin Racine (CPPM/IN2P3/CNRS)

9:30 AM Scene modeling progress

Speaker: Garazi Garcia Palacios (IJCLab)

10:00 AM Other report from the Hack week.

Speaker: TBD

10:30 AM → 11:00 AM Coffee break

11:00 AM → 12:00 PM BLOCK 2: ZTF + Lemaitre

11:00 AM Status of ZTF

Speaker: TBD

11:30 AM Status of Lemaitre

Speaker: Nicolas Regnault (LPNHE)

12:00 PM → 1:30 PM Lunch break

1:30 PM → 3:00 PM BLOCK 3: Prospects for joint analysis

1:30 PM Why shall we do this / Navigating the politics.

Speaker: Christopher Stubbs (Harvard University)

2:00 PM Rubin observing cadence

Speaker: Philippe Gris (LPCA)

2:30 PM SNIa Forecast of Rubin x Low-z sample.

Speaker: Pierre-Francois Leget (Princeton University)

3:00 PM → 3:30 PM Coffee break

3:30 PM → 5:30 PM BLOCK 4: Vera C. Rubin Observatory status

3:30 PM Status at the summit, image quality, and active optical system.

Speaker: Elana Urbach (Harvard University)

4:00 PM The travel CPB campaigns

Speaker: Jérémy Neveu (IJCLab)

4:30 PM Status of science pipelines and data release production

Speaker: Clare Saunders (Princeton University)

5:00 PM Cross observation between ZTF and the Vera C. Rubin Observatory.

Speaker: Pierre-Francois Leget (Princeton University)

5:15 PM Discussion

7:30 PM → 9:30 PM Bifrost dinner

Location TBD