ZTF Spring Meeting | Paris May 2022

9 mai 2022, 00:00 → 13 mai 2022, 20:00 Europe/Paris

4 Place Jussieu, 75005 Paris

---

Location

The ZTF Spring 2022 meeting will be in person in downtown Paris, France from the 10th (see below) to the 13th of May 2022.

The meeting will be located 4 Place Jussieu, 75005 Paris. It is hosted by the LPNHE, the Paris lab of the CNRS/IN2P3.

Zoom connection will be made available for remote access. 

---

Slides:

Slides should be uploaded on the dedicated ZTF twiki page:

https://www.oir.caltech.edu/twiki_ptf/bin/view/ZTF/ZTFIITeamMeetingMay2022

---

Rooms & Zoom Connections
Please check the guide here

Tuesday the 10th: // Sessions 

• Cosmology | Seminar room (ground floor)
  cnrs.zoom.us/j/98183843363
  Code secret : ZTF2Cosmo

• SN Physics | Salle des conseils (ground floor)
  cnrs.zoom.us/j/94038547016
  Code secret : ZTF2SN

• ML | Neutrino room (first floor)
  cnrs.zoom.us/j/97330162583
  Code secret : ZTF2ML

Wednesday the 11th-> Friday the 12th: Main meeting

•  Amphitheatre Charpak, LPNHE, Tower 22, ground floor
  cnrs.zoom.us/j/91615954682
  Code secret : ZTF2Paris

---

Where to eat:

• On Tuesday, you are on your own. Here is a list of places from where you can have lunch.
• On Wed-Fri, there will be lunch boxes delivered by a restaurant nearby. There are nice places around the campus where you can go during lunchbreak: the Seine river banks (7 min walk), the Jardin des Plantes (7 min walk) or the Arenes de Lutece (10 min walk).

Dinner

• 20:30 sharp, Port de l'Arsenal, 50 boulevard de la Bastille,

Hotels

The ZTF Meeting will be in the historical centre of Paris (near the Cathedral, the "Quartier latin", the Pantheon, etc.). Any hotel near Place Jussieu would be good, but be careful, sometime the hotel room in French hotels could be small. The typical price range for decent hotel in Paris is ~100€/night to ~200€/night. 

Note that downtown Paris is not that big and the public transportations works quite well (subway, bus, city-bikes "velib'" etc. )

Here is nonetheless a small list of hotels, these are only examples, check on booking or equivalent for choices :

• http://www.familiahotel.com/ | ~120€/night 
• http://www.hotel-paris-minerve.com/  | ~150€/night
• Hotel Trianon Rive Gauche | ~150€/night
• https://www.hotelvendomesaintgermain.com/fr/ | ~200€/night

---

Social events

Social events are being organised. Stay tune

---

Visa

If you need a visa to come to France, please contact Nicolas Regnault (nicolas.regnault@lpnhe.in2p3.fr)

---

COVID 19 rules.

Please check the official government webpage here: https://www.interieur.gouv.fr/covid-19-international-travel

• Once in France, there are no special regulations anymore even though the mask is recommended and sometime mandatory for health-related shops like Pharmacies. The University recommends wearing mask in small meeting rooms.
   
• To enter France, Please check the official web page:
  But for indication, the 20th of April, the following rules applies
  • For travelers vaccinated within the meaning of European regulations, no more tests is required on departure. Proof of a complete vaccination schedule becomes sufficient to arrive in France, regardless of the country of origin, as was the case before the distribution of the Omicron variant.
     
  • For unvaccinated travellers, the obligation to present a negative test to travel to France remains, but the measures on arrival (test, isolation) are lifted when they come from countries on the "green" list, characterized by a moderate circulation of the virus.
     
  • When unvaccinated travelers come from a country on the "orange" list, they must continue to present a compelling reason justifying the need for them to come to mainland France and may still be subject to a random test on arrival. Travelers who test positive will have to isolate themselves, in accordance with the recommendations of the Health Insurance.
• Check on the official web page for the "color" of your country (most are green)

Check here concerning COVID-19 test prices in France. For non-French antigen tests can be made roughly in every pharmacies for 22€ and results should be available within a couple of hours. If you need a PCR test, you need to schedule it. The best way is through the Doctolib app I beleive. PCR tests are ~50€.

---

SOC: Mickael Rigault (head), Jesper Sollerman, Mansi  Kasliwal, Matthew Graham, Adam Miller
LOC: Nicolas Regnault (head), Leander Lacroix, Pierre Antilogus, Guy Augarde

This meeting has received support from ZTF, the IN2P3, the Agence National de la Rechercher and the European Research Council (grant n°759194 - USNAC)

mar. 10 mai

09:00 → 10:30 SWG Parallel sessions: SWG Cosmology

09:00 (Cosmo) Who is Who doing What

2 to 3 minutes per person with 1 or 2 slides. Slides should be given in advance

09:30 (Cosmo) DR2 Sample | What data do we have (and don't)

10:00 (Cosmo) DR2 Sample | How to access the data (tuto)

Orateur: Mickael Rigault (IP2I)

09:00 → 10:30 SWG Parallel sessions: SWG SN Physics

09:00 (SN) Intro

09:30 (SN) Flash ionisation features: early time CSM interaction

Orateur: Rachel Bruch

10:00 (SN) SLSNI spectra analysis

Orateur: Yan Lin

10:30 → 11:00 Social Event: Coffee Break

11:00 → 12:30 SWG Parallel sessions: SWG Cosmology

11:00 (Cosmo) DR2 Sample | List of papers discussion

11:45 (Cosmo) DR2 Sample | What is missing

12:10 (Cosmo) DR2 Sample | What Can you bring

11:00 → 12:30 SWG Parallel sessions: SWG SN Physics

11:00 (SN) SN 2018ibb

Orateur: Steve Schulze

11:30 (SN) Low mass end of CC SNe

Orateur: Kaustav Das

12:00 (SN) Superluminous SN 2020znr

Orateur: Janet Chen

12:30 → 14:00 Social Event: free time for Lunch

14:00 → 16:00 SWG Parallel sessions: ML WG

14:00 (ML) Modelling AGN variability

Orateur: Matthew Graham (CalTech)

14:15 (ML) Automated classification of SEDM spectra using deep learning

Orateur: Yashvi Sharma

14:30 (ML) SNGuess: a method for the selection of young extragalactic transients (remote)

Orateur: Nicolas Miranda

14:45 (ML) SCoPe

Orateur: Jan von Roestel

15:15 (ML) Real-time SN Ia light curve augmentation to maximize SALT2 constraints (remote)

Orateur: Sravan Sravan

15:30 (ML) ZTF Solar System object detection and follow up (remote)

Orateur: Bryce Bolin (B612 Foundation)

15:45 (ML) Combining Data Science and STEM with Mobile App ZARTH (remote)

Orateur: Anika Anika

14:00 → 15:15 SWG Parallel sessions: SWG SN Physics X Cosmology

14:00 (SN x Cosmo) Low luminosity lax SNe

Orateur: Viraj Karambelkar

14:25 (SN x Cosmo) la-CSM sample

Orateur: Yashvi Sharma

14:50 (SN x Cosmo) Overview on SNe Ia Physics Projects

Orateur: Maxime Deckers

15:15 → 16:00 SWG Parallel sessions: SN Cosmology

15:15 (Cosmo) The SNeIa Volume limited Sample

Orateur: Madeleine Ginolin (IP2I)

15:35 (Cosmo) AMPEL & Selection Function

Orateur: Jakob Nordin

15:30 → 16:00 SWG Parallel sessions: SN Physics

15:30 (SN) Magnetars

Orateur: Ping Chen

16:00 → 16:30 Social Event: Coffee Break

16:30 → 17:00 SWG Parallel sessions: SN Physics

16:30 (SN) SNe Ibc from the Bright Transient Survey

16:30 → 17:00 SWG Parallel sessions: SWG Cosmology

16:30 (Cosmo) Selection function affecting fs8

Orateur: Bastien Carreres (CPPM)

fσ8 with SN Ia - ZTF Paris.pdf

16:45 (Cosmo) Discussion on fs8 efforts

16:30 → 18:00 SWG Parallel sessions: WG ML

16:30 (ML) Plans

17:15 (ML) Discussion

17:00 → 18:00 SWG Parallel sessions: Cross WG Discussion (SN & Cosmo & BTS)

17:00 Common discussions with SNIa and BTS on Light curves and classification

18:30 → 20:30 Social Event: Welcoming “Cocktail with a view”

mer. 11 mai

09:00 → 09:10 Social Event: Starting

09:10 → 10:40 Update on SWG: AGN & TDE

Présidents de session: Ashish Mahabal, Daniel Perley (Liverpool John Moores University)

09:10 Update on TDE Results

Orateur: ‪Sjoert van Velzen

09:30 Update on AGN

Orateur: Matthew Graham (CalTech)

09:45 The X-ray Bright TDE AT2021ehb

Orateur: Yuhan Yao (Caltech)

10:05 TDEs with the 3 GHz VLA Sky Survey

Orateur: Jean Somalwar

10:20 The Final Season Reimagined: 30 TDEs

Orateur: Erica Hammerstein

10:40 → 11:10 Social Event: Coffee Break

11:10 → 12:40 Update on SWG: Multi-Messenger

Présidents de session: Jesper Sollerman, Mathew Smith (IN2P3)

11:10 Update on Neutrino Counterparts

Orateurs: Simeon Reusch (DESY), Sjoert van velzen (Leiden University)

11:40 Update on GRBs

Orateur: Tomas Ahumada (University of Maryland)

12:00 Update on ZTFResT and AT2022cmc

Orateur: Igor Andreoni (Joint Space-Science Institute)

12:20 Update on Preparations for the upcoming O4 run

Orateurs: Michael Coughlin (University of Minnesota), Shreya Anand (CalTech)

12:40 → 14:10 Social Event: Lunch

14:10 → 14:40 ZTF PhDs: PhD Session 1

Présidents de session: Steve Schulze, Suhail Dhawan

14:10 Rachel Bruch | Flash Spectroscopy

Orateur: Rachel Bruch

14:16 Melissa Amenouche | ZTF survey simulation

Orateur: Melissa Amenouche (Laboratoire de Physique de Clermont)

14:22 Kaustav Das | Low mass end of CC SNe

Orateur: Kaustav Das

14:28 Estelle Robert | Estimation of fs8 from SNe Ia

Orateur: Estelle Robert (IP2I)

PhD talk ZTF May 2022.pdf

14:34 Signatures of interaction in SNe Ia

Orateur: Jacco Terwel

14:45 → 16:00 Cross WG activities: Discussion

Présidents de session: Mickael Rigault (IP2I), Erik Kool (Stockholm University)

14:45 Structured discussion | Lightcurve Photometry

15:15 Structured discussion | Simulations (simsurvey++)

15:45 Structured discussion | Broker (AMPEL, filter, Fritz)

16:00 → 16:30 Social Event: Discussion over Coffee Break

16:30 → 17:00 General overview: IPAC

Présidents de session: Mickael Rigault (IP2I), Erik Kool (Stockholm University)

16:30 News from IPAC

Orateur: Ben Rusholme

17:00 → 17:30 General overview: ZTF-II

Présidents de session: Steve Schulze, Suhail Dhawan

17:00 General overview on ZTF

Orateur: Matthew Graham (CalTech)

20:15 → 23:15 Social Event: Dinner on river-boat

jeu. 12 mai

09:00 → 10:30 Update on SWG: Physics of Supernovae

Présidents de session: Matthew Graham (CalTech), Leander Lacroix (LPNHE)

09:00 General Introduction

Orateur: Jesper Sollerman

09:30 Weizmann Precursors, Flash and New telescopes

Orateur: Nora Linn Strojohann

10:00 A radio-detected thermonuclear supernova interacting with helium rich circumstellar material

Orateur: Erik Kool (Stockholm University)

ZTF20aatxryt_slides.pdf

10:15 Luminous Red Novea and Intermediate Luminosity Red Transients

Orateur: Viraj Karambelkar

10:30 → 11:00 Social Event: Coffee Break

11:00 → 12:30 Update on SWG: Cosmology

Présidents de session: Lin Yan, Sjoert van velzen (Leiden University)

11:00 Update on ZTF Cosmo DR2

Orateur: Mathew Smith (IN2P3)

11:30 Strongly Lensed SNe Ia Search

Orateur: Ana Sagués Carracedo

11:50 SNe Ia Progenitor & "Weirdos"

Orateur: Georgios Dimitriadis

12:10 Prospect for Cosmology (H0, w and fs8)

Orateur: Mickael Rigault (IP2I)

12:30 → 14:00 Social Event: Lunch

14:00 → 14:30 ZTF PhDs: PhD session 2

Présidents de session: Sébastien Bongard (LPNHE), Rachel Bruch

14:00 Ana Sagués Carracedo | Search of Strongly lensed SNe Ia

Orateur: ana Sagués Carracedo

14:06 Yashvi Sharma | Ia-CSM

Orateur: Yashvi Sharma

14:12 Alice Townsend | Search for lensed SNe with Ampel

Orateur: Alice Townsend

14:18 Madeleine Ginolin | Volume Limited Ia Sample

Orateur: Madeleine Ginolin (IP2I)

ZTF PhD talk.pdf

14:24 Bumps in the ZTF Ia sample

Orateur: Maxime Deckers

14:30 → 16:00 Cross WG activities: Instrument & Calibration

Présidents de session: Sébastien Bongard (LPNHE), Rachel Bruch

14:30 How the hardware misbehaves

Orateur: Roger Smith (California Institute of Technology)

14:55 Zubercal | fixing the PSF photometry

Orateur: Andrew Drake

15:05 Calibration Overview | from photons to Lightcurve

Orateur: Nicolas Regnault (LPNHE)

15:25 ZTF IN2P3 pipeline, where we are

• UberCal
• Flats
• Scene Modelling

Orateurs: Benjamin Racine (CPPM/IN2P3/CNRS), Philippe Rosnet (Université Blaise Pascal - CNRS/IN2P3)

16:00 → 16:30 Social Event: Coffee Break

16:30 → 17:00 Cross WG activities: Machine Learning

Présidents de session: Roger Smith, Simeon Reusch (DESY)

17:00 → 17:30 Cross WG activities: Bright Transient Survey

Présidents de session: Roger Smith, Simeon Reusch (DESY)

17:00 BTS Overview

Orateur: Daniel Perley (Liverpool John Moores University)

ZTFParis_BTS.pptx

17:30 → 18:30 General overview: ZTF-III discussions

Présidents de session: Nicolas Regnault (LPNHE), Luke Harvey

17:30 Introduction to ZTF-III

Orateur: Shrinivas Kulkarni (Caltech)

17:50 ZTF-III Discussion

ven. 13 mai

09:00 → 10:30 Update on SWG: Galactic & M31

Présidents de session: Marek Kowalski, Young-Lo Kim (Lancaster University)

09:00 Overview

Orateur: Jan von Roestel

09:30 pulsating white dwarf stars

Orateur: Zach Vanderbosch

09:50 Galactic X-ray sources

Orateur: Tony Rodriguez

10:10 massive rapidly rotating white dwarfs

Orateur: Ilaria Ciaizzo

10:30 → 11:00 Social Event: Coffee Break

11:00 → 12:30 Update on SWG: Solar System Bodies

Présidents de session: Joel Johansson, Erica Hammerstein

11:00 Overview Solar System

Orateur: Bryce Bolin (B612 Foundation)

11:30 Cometary outburst

Orateur: Michael Kelley (University of Maryland)

11:50 Asteroid phase curve

Orateur: Zhong-Yi Lin

12:10 Earth Trojans

Orateur: Travis Yeager

12:30 → 14:00 Social Event: Lunch

14:00 → 14:30 ZTF PhDs: PhD Session 3

Présidents de session: Kate Maguire, Benjamin Racine (CPPM/IN2P3/CNRS)

14:00 Bastien Carreres | Bias affecting the derivation of fs8

Orateur: Bastien Carreres (CPPM)

fσ8 with SN Ia - ZTF Paris - PhD talks.pdf

14:06 Guy Augarde | SALT++ SNe Ia Lightcurve fitter

Orateur: Guy Augarde (LPNHE)

14:12 Erez Zimmerman | To Be Given

Orateur: Erez Zimmerman

14:18 Kelian Sommer | SNe Ia 2nd bump

Orateur: Kelian sommer

14:24 Spectral modelling of SNe Ia and exotic transients

Orateur: Luke Harvey

14:30 → 15:00 Cross WG activities: SEDm

Présidents de session: Kate Maguire, Benjamin Racine (CPPM/IN2P3/CNRS)

15:00 → 15:30 Cross WG activities: Fritz Discussion

Présidents de session: Delphine HARDIN (Pierre & Marie Curie University, Paris), Yashvi Sharma

15:30 → 16:00 General overview: LSST & ZTF

Présidents de session: Delphine HARDIN (Pierre & Marie Curie University, Paris), Yashvi Sharma

16:00 → 16:30 Social Event: Concluding Coffee Break

16:30 → 17:30 General overview: Closing discussion