Euclid and Quasars at the Redshift Frontier

17 Nov 2025, 09:00 → 19 Nov 2025, 15:00 Europe/Berlin

Sonnenbau (Hamburg Observatory)

Jan-Torge Schindler (University of Hamburg, Hamburg Observatory)

Rationale: After a two very successful years of Euclid quasar discovery/characterization efforts and in the anticipation of the internal DR1 data release, we as a work package want to come together to look back on the progress we made, review our Euclid quasar selection strategies, and discuss the WP key papers related to DR1. The workshop will take place at Hamburg Observatory (on google maps) in Hamburg Bergedorf.

 

Workshop dates: November 17th (morning) to November 19th (noon).

 

Catering: Food and drink for coffee breaks in the morning and afternoon and lunch will be provided. 

Travel to Hamburg Observatory

It is highly recommended to use the hvv App ( iOS ; Android ) for  buying public transport tickets and for finding the fastest rout to your destination. 

- from the main train station: You take the S2 (suburban railway) in the direction of Aumühle and exit at Bergedorf station. Buses 135/332 run in the direction of the observatory (see google maps link above).

- from the airport: You take the S1 in the direction of Wedel and exit at Berliner Tor station. There you switch to the S2 in the direction of Aumühle and exit at Bergedorf station. Buses 135/332 run in the direction of the observatory (see google maps link above).

 

Recommendation for hotels
Jungclaus (in reasonable walking distance)
H4 (Bergedorf center)
Mediterran (right next to the observatory)

 

Recommendation for restaurants (dinner)

OnDao (Asian)
Locanda Riva (Italian)
Ma Maison (Tapas)
Zur alten 16 (German)
Mediterran (very close)

 

LOC:
Jan-Torge Schindler
Francesco Guarneri
Tatsuyuki Sekine
Radha Gharapurkar
Katharina Jurk

Monday 17 November

09:00 → 09:30 Welcome Coffee: First Day Welcome!

Enjoy a cup of hot coffee, while we start off the workshop day with a welcome message, an overview over the schedule and quick discussion of logistics.

Convener: Jan-Torge Schindler (University of Hamburg, Hamburg Observatory)

09:30 → 10:30 Updates from the work package

10:30 → 11:00 Coffee break

11:00 → 12:30 Updates from the work package

12:30 → 13:30 Lunch break

13:30 → 14:30 Science Discussion: DR1 data, Euclid policies, and QSO selection

14:30 → 15:30 Hands-on session: DR1 data, QSO selection, slitless spectroscopy

15:30 → 16:00 Coffee break

16:00 → 17:30 Hands-on session: DR1 data, QSO selection, slitless spectroscopy

Tuesday 18 November

09:00 → 09:30 Welcome Coffee

Enjoy a cup of hot coffee, while we start off the workshop day with a welcome message, an overview over the schedule and quick discussion of logistics.

Convener: Jan-Torge Schindler (University of Hamburg, Hamburg Observatory)

09:30 → 10:30 Science Discussion: Links to galaxies, z~6 QSOs, obscured and type-2 QSOs

10:30 → 11:00 Coffee break

11:00 → 12:30 Hands-on session: DR1 data, QSO selection, slitless spectroscopy

12:30 → 13:30 Lunch break

13:30 → 14:30 Tour of the Observatory

Speaker: Francesco Guarneri

14:30 → 15:00 Coffee break

15:00 → 16:30 Open discussion: paper-leadership, co-author lists, proposal PI rights

16:30 → 22:30 Christmas market & social dinner (Hamburg City Centre)

Speaker: Jan-Torge Schindler (University of Hamburg, Hamburg Observatory)

Wednesday 19 November

09:00 → 09:30 Welcome Coffee

Enjoy a cup of hot coffee, while we start off the workshop day with a welcome message, an overview over the schedule and quick discussion of logistics.

Convener: Jan-Torge Schindler (University of Hamburg, Hamburg Observatory)

09:30 → 10:30 Science Discussion: science and papers in 2026/2027

10:30 → 11:00 Coffee break

11:00 → 12:30 Open discussion: Meeting wrap up

12:30 → 13:30 Lunch break

14:00 → 15:00 Colloquium

Hamburg Observatory Colloquium by Dan Stern

"The Extremes of Quasar Variability: Black Hole Mergers, Acquisitions, and Foreclosures"

Speaker: Dan Stern