Diffusion PNCG – n° 201 – 25 novembre 2020

1. NECO Workshop: Probing the Extragalactic Universe with High Energy and Very High Energy Sources (9-11 December 2020)

2. Workshop « Galactic Centre and Inner Galaxy » (Feb. 10-12, 2021, online)

3. journée Gaia (Jeudi 3 décembre)

4. BlueMUSE science workshop (Nov. 2020): presentations

5. News from the Chalonge – de Vega School
6. LCTP postdoc fellowship at University of Michigan (USA)
7. Job position in WEAVE-QSO science at Milan-Bicocca
8. Several postdoc positions are available at SISSA/IFPU (Trieste, Italy)

Envoyez svp vos propositions d’annonces à l’adresse : pncg@iap.fr
Pour vous inscrire ou gérer votre abonnement à la liste PNCG: https://listes.services.cnrs.fr/wws/info/pncg 

1. NECO Workshop: Probing the Extragalactic Universe with High Energy and Very High Energy Sources (9-11 December 2020)

The International Research Network France-Japan NECO (https://collaborations.lam.fr/neco/) organizes an on-line workshop entitled: Probing the Extragalactic Universe with High Energy and Very High Energy Sources. 

The dates of the workshop will be from 9 December to 11 December 2020 and from 08:30 – 12:00 in France & 16:30 – 20:00 in Japan. The attendance will be limited to about to ~ 80 persons via a free registration (no fees) on the following website: https://hexgaluniv.sciencesconf.org/

Two types of contribution are now possible:

  • Poster+Flash talk (3 minutes recorded slideshow commented live + 1 minutes for handover + questions for flash talks session)
  • Contributed talk (15 minutes + 3 minutes for questions + 2 minutes for handover)


  • AGN cycle and galaxy clusters : feedback from AGNs, UFO, extragalactic cosmic rays, galaxy clusters and related AGN physics, HITOMI/XRISM and Athena sciences
  • Multi-messenger astrophysics : GRB host galaxies, UHECR and nearby extragalactic populations, short and long GRB and associated gravitational events, constraining stellar populations in galaxies and the Hubble constant, revealing the black hole population with gravitational waves
  • Probing extragalactic lines of sight : Extragalactic background light, InterGalactic Magnetic Field, search for LIV signatures in signals from AGN and GRB, contraints deduced for cosmology and fundamental physics, CTA sciences

transmis par D. Burgarella

2. Workshop « Galactic Centre and Inner Galaxy » (Feb. 10-12, 2021, online)

This workshop is run online and virtually in Heidelberg and is part of the COST action « Revealing the Milky Way with Gaia » supported by the European Union.

– Further information about the workshop is available on the workshop’s website (see https://zah.uni-heidelberg.de/mw-gaia2021).
– A preliminary programme is published HERE.
– Workshop Registration is open until Jan. 10, 2021. No fees will be charged for participating, the number of participants however is limited.
– Abstracts of contributed talks and ePosters need to be submitted until Jan. 10, 2021.

Thematic Overview
The inner regions of our Milky Way are dominated by the Galactic bar and a classical bulge. The barred potential causes gas to flow inwards and form stars in the central few 100 parsecs. Over time this process may have built up the nuclear stellar disk, also found at these radii. At the very centre, the nuclear star cluster surrounds the Galactic supermassive black hole, Sgr A*. The larger inner bulge region also contains the highest-density parts of the Milky Way’s stellar halo, and perhaps a classical bulge component.
The next Gaia data release EDR3 will be released on Dec. 3, 2020, and will be based on 34 months of observations. Compared to DR2 improvements in completeness and astrometry (20% in parallaxes, factor of two in proper motion) will be provided. Additionally, more information on the parallax zero point will be included and the basis of the Celestial Reference Frame (CRF) will be extended to 1.5 million objects, a factor of three more.
During this 3 day workshop in (virtual) Heidelberg, we will focus on the impact of the ultra-precise Gaia astrometry on our understanding of the structure and dynamics of the Galactic bar and bulge region including the interrelation with the inner halo, the nuclear stellar disc and the central star cluster. Chemical enrichment, ages and the assembly history will also be covered. The celestial reference frame, zero points of parallaxes and proper motions, as well as questions of fundamental physics will be discussed. Also first results based on EDR3 are expected.

Topics Covered

  • Gaia EDR3: overview, completeness
  • Gaia Ref Frame: zero points in parallax and proper motion, fundamental physics and relativistic effects using Gaia and VLBI,  Sgr A* and testing GR
  • Bulge, Bar and Inner Halo: kinematics, dynamics, mass distribution
  • Bulge, Bar, Inner Halo: metallicity-orbit distribution and stellar ages
  • Bulge, Bar, Inner Halo: critical discussion on stellar ages in Bulge, assembly history from (hydro-)dynamical and cosmological simulations
  • Nuclear Disk, Gas Inflow and Star Formation

Mode of Workshop
This workshop is based on invited key presentations and contributed talks, ePosters, a practical hands-on session for EDR3, and dedicated discussions. It will be run online via ZOOM and Slack.

Transmis par A. Robin

3. journée Gaia (Jeudi 3 décembre)

Jeudi 3 décembre, le catalogue Gaia nouveau va arriver !

A l’occasion de la publication de la première partie du troisième catalogue Gaia, Gaia EDR3 (Gaia Early Data Release 3), une journée est organisée conjointement par l’Observatoire de Paris, le CNES,  l’UTINAM à Besançon, l’Observatoire de la Côte d’Azur (OCA) à Nice et le Laboratoire d’Astrophysique de Bordeaux (LAB).

La journée se déclinera en trois temps  :

  • de 11 à 12h : une conférence de Presse sur le catalogue Gaia EDR3 et ses premiers résultats ;
  • de 14 à 17h : une série de webinaires scientifiques sur quelques uns des très nombreux résultats scientifiques déjà obtenus avec Gaia DR2 
  • de 21 à 22h : une conférence grand public.

Lien zoom: https://us02web.zoom.us/j/88585214423?pwd=QldmTURrNW9GUDM3Rk9acTArU3dUdz09

Programme des webinaires scientifiques de l’après-midi 
14:00 Fabienne Casoli, Présidente de l’Observatoire de Paris – PSL : introduction
14:05 Paola Di Matteo (GEPI) : Le disque de la Voie lactée dévoilé par Gaia : crêtes, ondulations, et structure spirale
14:25 Pierre Kervella et al. (LESIA) : les compagnons stellaires et sous-stellaires à l’aide des mouvement propres Gaia
14:45 Misha Haywood (GEPI) : Histoire d’une rencontre galactique
15:05 Jean Schneider (LUTh) : Recherche d’astéroïdes interstellaires avec Gaia
15:20 Clement Hottier (GEPI) : « Dépoussièrer » la Galaxie avec Gaia
15:50 Louise Breuval (LESIA) : La loi de Leavitt des Céphéides de la Voie lactée grâce aux parallaxes de Gaia DR2 et à des amas ouverts hôtes
16:10 Francois Hammer (GEPI) : Gaia DR2 : conséquences sur la nature des galaxies naines sphéroïdales et sur la masse de la Voie lactée
16:30 Frédéric Arenou (GEPI) : Gaia, de DR2 à EDR3

Programme de la Conférence Grand Public
21h00-21h05 : Introduction sur la mission Gaia par Philippe Laudet (Responsable des programmes Astrophysique et Astronomie du CNES)
21h05-21h22 : Le système solaire vu par Gaia par Paolo Tanga (astronome à l’Observatoire de la Côte d’Azur)
21h22-21h39 : Étudier la galaxie avec 1 milliards d’étoiles par Orlagh Creevey (astronome adjoint à l’Observatoire de la Côte d’Azur) 
21h39-21h56 : Les lentilles gravitationnelles avec Gaia avec Christine Ducourant (astronome adjoint à l’Observatoire de Bordeaux)

Plus de détails sur la journée et résumé des présentations sur https://gaia.obspm.fr/la-mission/les-resultats/article/3-decembre-2020-le-catalogue-nouveau-est-arrive

Transmis par C. Turon

4. BlueMUSE science workshop (Nov. 2020): presentations
The first BlueMUSE Science Workshop happened virtually on Nov 9th Nov 10th 2020, with 196 registered participants and 58 speakers. The PDFs of the presentation slides have now been included on the  project page:

Transmis par J. Richard

5. News from the Chalonge – de Vega School

– Call for Papers: Universe Special Issue: keV Warm Dark Matter (ΛWDM)in Agreement with Observations in Tribute to Hector J. de Vega.
Research Papers and Review Papers. All aspects of keV Warm Dark Matter are covered: particles, nuclear, formation and structure of galaxies, cosmological large scales, stars, black holes, signatures, direct detection experiments of keV dark matter.
Submission of Manuscripts is Open. Information and Scientific Scope:

-Call for Papers: Universe Special Issue: Women Physicists in Astrophysics in Cosmology. Research papers and review papers. All subjects of astrophysics and cosmology are covered.
Submission of Manuscripts is Open. Information and Scientific Scope:

– The many scientic lives of Hector J. de Vega: Collaboration with Lev N. Lipatov: Integrability in QCD, gluons reggeons, pomerons at finite temperature, high energy scattering and gravitons. Tribute.

– Newly Deconfined Living Archives Chalonge de Vega Sanchez
(numerisation by François Sevre, CNRS IAP Sorbonne Université)…the students become Lecturers, the Lecturers become Nobel prizes…
the impossible yesterday become the standard today…

Film of the 1991 Chalonge School: First Courses on Astrofundamental Physics inaugurated by Nobel prize of Physics S. Chandrasekhar (CNRS Images Medias-Dir. Jean Michel Arnold, 3h05m34s Jean Mouette).

Film on the 1996 Chalonge School Course, (ARTE Television, Online productions 1997, Françoise Wolff, Tristan Bourlard, 50m)

Film of the 2006 Chalonge School Paris Nobel Conference: The Discovery of the CMB Anisotropy (2h31m, Jean Mouette).

Find more in the Archives:

-Upcoming School Events (Paris, in remote):
Thursday 3 December 2020, Paris 16h00 French Time:
Special Session: Adam G. RIESS (Johns Hopkins University), Nobel prize of Physics, receives the Chalonge and de Vega Medals 2020 and deliver a Lecture on H0, Recent Results:


More information:

transmis par N. Sanchez

6. LCTP postdoc fellowship at University of Michigan (USA)

Deadline: 1 Dec 2020

University of Michigan is looking for multiple Leinweber Center for Theoretical Physics (LCTP) Postdoc Fellows. 
At least one hire will be in theory/data oriented cosmology. 

The ad is at
https://academicjobsonline.org/ajo/jobs/16953and the deadline is Dec 1, though late applications will likely be considered. 

transmis par F. Bouchet

7. Job position in WEAVE-QSO science at Milan-Bicocca

Application deadline: 2nd December 2020

University of Milan-Bicocca is opening a job  for a postdoctoral researcher with interest in a significant role in the analysis of absorption line systems in the foreground of quasars as part of the WEAVE survey


The position will be initially for 2 years, with a possible extension for one or more years, depending on funding availability.

All relevant details on how to apply can be found in the call above.
In brief, the deadline for applying is 2nd December 2020 and a complete application (CV, list of publications, and PDF of selected publications, plus any other supporting document required by the call, such as a copy of ID) should be submitted through the application portal 

The start date is negotiable, and it could be as early as January 2021. For inquiries on the application and position, please contact Michele Fumagalli at michele.fumagalli@unimib.it

The successful candidate is expected to be an active participant of the WEAVE spectroscopic survey at the William Herschel Telescope (http://www.ing.iac.es/weave/). In particular, the successful candidate will contribute to the science activities of the WEAVE-QSO working group, which include: probing foreground quasar absorption at z2 for the study of galaxy and quasar environments, studying the properties of the inter/circum galactic medium, and mapping the large scale structure of the universe on scales up to the BAO scale using the Lya forest. WEAVE is expected to bring interesting and novel insight into ALSs thanks to its combination of good S/N and resolution. At Milan-Bicocca, the successful candidate will join a lead node in WEAVE-QSO with focus on the study of absorption line systems (ALS) against background quasars, taking a prominent role both in the identification and analysis of ALSs and in the science exploitation of the results. We are thus seeking a candidate with a strong profile in spectroscopy and data analysis.

Astrophysics at the University of Milan-Bicocca has been growing significantly in recent years: in the span of a couple of years we gathered a young and energetic team of 9 faculty members, 4 of whom have ERCs. Through national and international funding, we are quickly growing the number of postdocs and PhD students, and we expect to have over 20 researchers in post in the coming year(s). We are very active in theoretical, observational, and experimental programmes in cosmology, black holes and gravitational waves, and the physics of galaxy evolution and cosmic structures.  The group is leading major observational and theoretical programmes at national and international facilities, also in collaboration with INFN (National Institute for Nuclear Physics) and INAF (National Institute for Astrophysics). Members of the group are also active participants in several international collaborations, including the MUSE consortium, the WEAVE collaboration, the LISA consortium, the Virgo Collaboration, the European and International pulsar timing array collaboration, the Simons Observatory, the LiteBIRD satellite, and the Alpha Magnetic Spectrometer (AMS) experiment on the International Space Station.

Transmis par M. Fumagalli

8. Several postdoc positions are available at SISSA/IFPU (Trieste, Italy)

Deadline: 1 Dec 2020One postdoc position in numerical relativity and one in gravitational-wave data analysis
Deadline: 15 Dec 2020 Several positions in the areas of: astroparticle physics, astrophysical probes of fundamental interactions, early Universe, gravitational wave astrophysics, structures in the Universe, theory and phenomenology of gravity.https://academicjobsonline.org/ajo/jobs/17577

Deadline: 19 Dec 2020 One position in the area of Cosmology, Gravitation Theory, Quantum Gravity Phenomenology, Particle Astrophysics and Phenomenology, and Neutrino Physics will be considered.https://academicjobsonline.org/ajo/jobs/17595

Envoyez svp vos propositions d’annonces à l’adresse : pncg@iap.fr
Pour gérer votre abonnement à la liste PNCG: https://listes.services.cnrs.fr/wws/info/pncg