MWGaiaDN School "Gravitation and Astrometry"

8 Sept 2025, 08:30 → 12 Sept 2025, 14:00 Europe/Berlin

POT 351 (TU Dresden)

The workshop is aimed at PhD students from the MWGaia Doctoral Training Network network. The school is also open to a limited number of participants from outside the network.

The school gives an overview of the interplay between gravitation (both relativistic and non-relativistic) and high-accuracy astrometry. This includes:

• Relativity and astrometry
  • An introduction to the experimental state of relativistic gravitation
  • The standard relativistic modelling for Gaia-like astrometry
  • Relativistic modelling beyond the standard Gaia model
  • Gravitational waves with astrometry
• Gravitation in action
  • Non-single stars in Gaia
  • Gravitational microlensing with Gaia
  • Strong gravitational lensing with Gaia 
  • Astrometry of solar system objects with Gaia 
• High-accuracy astrometry beyond Gaia
  • Pulsar Timing and Astrometry
  • Radio astrometry with VLBI
  • Astrometry of the Galactic Center with GRAVITY

Finally, we will have a general presentation of the newly created German Center for Astrophysics.

During unconference sessions participants will work on short scientific projects, using Gaia data and with expert help available.

A detailed programme will be announced later.

Participants should make their own travel and accommodation arrangements. There is no registration fee for this school. MWGaiaDN covers the costs for the venue and also for the catering (lunches, coffee/tea) throughout the event.

MWGaiaDN is a Horizon Europe Marie Skłodowska-Curie Actions Doctoral Network funded under grant agreement no. 101072454. 

Monday 8 September

Registration

1 Welcome, Introduction

Speaker: Sergei Klioner

10:30 Coffee break

Lecture: Experimental foundations of gravitation

Convener: Sergei Klioner

Lecture: GREM: Gaia Relativistic Model

Convener: Sergei Klioner

12:30 Lunch

Lecture: Beyond GREM: Relativity for higher accuracy

Convener: Sven Zschocke

Hands-on Session: Main effects in astrometric reductions

15:30 Coffee break

Hands-on Session: Main effects in astrometric reductions

Tuesday 9 September

Lecture: Astrometry and gravitational waves

Convener: Robin Geyer

Lecture: Gravitational lensing

Convener: Zofia Kaczmarek

10:30 Coffee break

Lecture: Gravitational microlensing with Gaia

Convener: Zofia Kaczmarek

Lecture: Strong gravitational lensing with Gaia

Convener: Ludovic Delchambre

12:30 Lunch

Hands-on Session: Microlensing

Convener: Zofia Kaczmarek

15:30 Coffee break

Hands-on Session: Microlensing, Q&A and slack

Wednesday 10 September

Lecture: German Center for Astrophysics (DZA)

Convener: Maria Haupt

Lecture: Astrometry of solar system objects with Gaia

Convener: Paolo Tanga

11:00 Lunch

Excursion: Saxon Switzerland (we meet at the main railway station of Dresden)

Thursday 11 September

Lecture: Analysis of astrometric catalogues using scalar and vector spherical harmonics

Convener: Jan Meichsner

Lecture: Astrometry of AGNs with Gaia

Convener: Sergei Klioner

10:30 Coffee break

Lecture: Astrometry of non-single stars in Gaia

Convener: Frédéric Arenou

12:30 Lunch

Hands-on Session: Non-single stars

Convener: Frédéric Arenou

15:30 Coffee break

Hands-on Session: Determination of the Solar System acceleration from Gaia DR3

Friday 12 September

Lecture: Pulsar timing and astrometry

Convener: Huanchen Hu

Lecture: Radio astrometry with VLBI

Convener: Minghui Xu

10:30 Coffee break

Lecture: Astrometry of the Galactic Center with GRAVITY

Convener: Stefan Gillesen

End: Closing remarks

Convener: Sergei Klioner

12:30 Lunch