Imprimer

1) Colloque quadriennal du PNP | 29 juin - 1er juillet 2022 | ENS Lyon

SAVE THE DATE -  SAVE THE DATE - SAVE THE DATE

Nous avons le plaisir de vous annoncer que le colloque quadriennal du PNP se tiendra du mercredi 29 juin au vendredi 1er juillet 2022 à l'ENS Lyon.

Comme tous les quatre ans, l'ensemble de la communauté (exosystèmes, formation des systèmes planétaires, Terre interne, surfaces et atmosphères planétaires) est invité à présenter ses avancées marquantes obtenues ces quatre dernières années. Les groupes ayant reçu un financement PNP dans la période 2018-2021 sont fortement incités à venir présenter leur travaux, sous forme de présentation orale ou poster. Cette invitation est bien sur étendue à toute la communauté de la planétologie française. En effet, le PNP a vocation à représenter la communauté entière, même si financée par d'autres biais.

Les informations pratiques sur le colloque et les modalités pour l'inscription et le dépôt d'abstracts seront communiqués ultérieurement, en début d'année prochaine, quand le site web sera prêt. Mais veuillez SVP déjà marquer ces dates sur votre calendrier.

Le CS du PNP


2) Rencontres Exobiologiques pour Doctorants | March 13-19, 2022 | Reserve Ornithologique du Teich
The 2022 session of the Rencontres Exobiologiques pour Doctorants  (RED'22 / Astrobiology Introductory Course) will take place, if sanitary conditions allow, from March 13 to 19, 2022 at the Reserve Ornithologique du Teich (France).
 
These meetings are organized for:
Any student preparing a thesis in Earth and Universe Sciences, Chemical Sciences, Life Sciences, Bioinformatics or History / Philosophy of Sciences.
Students wishing to acquire an interdisciplinary training in astrobiology to complete their initial training and to be able to address questions related to the origins of life on Earth and beyond, its evolution and its distribution in the Universe.
The school is also open to any young researchers interested in astrobiology
 
The RED'22 / Astrobiology Introductory Course program is complementary to the RED'21 program, however it is not necessary to have attended in 2021 to participate in this new school.
 
Lectures will be held in English.
 
Registrations are open until January 30, 2022. Some grants to participate are available, more about it on the website.
Discover the program and the speakers of this session on the school website:
 
http://www.exobiologie.fr/red/index.php/en/
 
Muriel Gargaud & Hervé Cottin

3) Conference on Gas Hydrate (ECGH2022) | Lyon |  June 13-16th, 2022
The first European Conference on Gas Hydrate (ECGH2022) will be organized in Lyon, June 13-16th 2022, by the “Ecole des Mines de Saint-Etienne" and under the aegis of the CNRS research consortium “GDR Hydrate".
With the wish of starting a series of European conferences devoted to Clathrate hydrates, ECGH2022 aims at discussing the latest scientific challenges and developing sustainable goals and applications as defined by United Nations. The scope of the conference thus covers topics such as “fundamentals”, “crystallization and flow modelling”, “natural gas hydrates and geo-engineering”, “hydrate-based and energy efficient technologies” and “astrophysics”.

ECGH2022 will be the occasion to share and discuss the latest results during a face-to-face and convivial event (in view of the sanitary situation, visio-participation will be possible). Early-bird registration and student reduced fees, including lunches in a famous "Brasserie Lyonnaise", will permit the participation of young and experienced scientists.

More information are available on http://ecgh2022.sciencesconf.org/

The local organising committee

4) 30 months post doc position: New concepts in THz gas spectroscopy and sensing | Dunkerque, France
Project Halogen (ie CH3X; OX and HX; XX being Cl, I or Br) gas are produced by numerous industries, oceans and several other bio systems. During the past decades, researchers demonstrated their major role in the atmosphere. They act on pollutants and particles through reactional cycles and are involved in the radiative forcing. They are major players of the Earth's energy budget and global warming. Still, today no technique exists able to measure these species at realistic concentration in real time. In this multidisciplinary internship, we propose to implement an innovative physical concept shown on figure 1: coupling of the molecular frequency comb of a halogen gas to the optical frequency comb of a Fabry-Perot cavity. This  coupling  will  enhance  the  light  matter  interaction  and  consequently  enable  to  detect  extremely  small concentrations of gas. We will probe this system using TeraHertz time domain spectroscopy (TDS) and a dedicated algorithm developed in the team to the study of gas by TDS in Lille and electronic sources in Dunkirk.
 
In this project, the candidate will have to: (i) implement the gas spectroscopy setups; (ii) perform the experiments on simple gases and evaluate the limitation of the setup, (iii) implement the resonant cavity in the setup, (iv) perform the experiments on gas mixtures and evaluate the performances of the new approach.  The candidate will work in the collaboration between two teams of experienced researchers: the THz-Photonics group at IEMN Laboratory (https://photoniquethz.univ-lille.fr/en/),  in Villeneuve d’Ascq (Lille) (18 months) and at LPCA in Dunkirk (12 months).  The IEMN group has a long lasting experience in the conception and realization of THz optoelectronic devices and is fully equipped to carry out this project, including state of the art microwave and mm/sub-mm-wave electronic instrumentation, MIR and THz laser sources and detectors, and a THz TDS dedicated to gas spectroscopy. The Laboratory hosts a 1500m2 clean-room with state of the art growth and fabrication facilities. IEMN is located in Lille, the capital of French Flanders, a vibrant city close to the Belgian border at 50min by train from Paris-CDG airport.

The THz group of LPCA have significant experience in the development of THz instruments for high spectral resolution spectroscopy based onto electronic and optoelectronic conversions. The group has also developed skills in gas phase metrology  applications  from  rotational  lines  in  complex  chemical  mixtures  and  is  deeply  involved  in  ambitious spectroscopy  studies  from  microwave  to  Far  Infrared  region  at  different  level  of  resolution  using  electronic,
optoelectronic and synchrotron sources. The LPCA is located in Dunkirk a lovely seaside destination with 10 miles of white sandy beaches very well known for its history and for its carnaval!

We are looking for a spectroscopist holding a PhD in physics or a related field. Having one of the following skills would greatly increase the chance of success of any application:
Optical/spectroscopy experiments
Gas phase molecular spectroscopy
Coding (python) or algorithmic / optimization
 
Cité Scientifique, Avenue Poincaré - CS 60069
59652 Villeneuve d’Ascq Cedex
http://www.iemn.univ-lille1.fr     
 
 
We strongly advise any potential candidate to contact us by email or elsewhere to begin the discussion before any formal application.
 
The position will be funded by two successive contracts (18 +12 months), corresponding to the stay in the two sites. There is a high probability of getting a 6 months extension for the second contract through an additional funding
scheme.
 
Key words: TeraHertz, Time domain spectroscopy, strong coupling, algorithmic
 
Contacts:  
Romain Peretti (IEMN) Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.  
Arnaud Cuisset (LPCA) Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.


5) 3-year postdoctoral research position in planetary climates at the Technical University of Denmark
DTU Space (the National Space Institute at the Technical University of Denmark) invites applications for a 3-year postdoctoral research position in planetary climates to work with Senior Researcher Dr. João Mendonça. The successful applicant is expected to have experience in planetary modelling, including atmospheric or interior modelling, and will join the Exoplanet Group at DTU.

Responsibilities and qualifications
The new postdoctoral researcher will primarily work on Venus science and the characterisation of terrestrial extrasolar planets. The successful applicant is expected to have research experience in planetary sciences (e.g., planetary atmospheres and/or interiors). During the 3-year appointment, the successful applicant will contribute to the ESA EnVision mission science and will also be able to conduct his/her/their independent research, increasing the group’s model expertise. The start date is flexible but expected to be in the fall of 2022.

Candidates should have a PhD degree or equivalent by the start of the appointment.

Further information
Further information may be obtained from: Dr. Joao Mendonca, email: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

Application procedure
Please submit your online application no later than 15 December 2021 (Danish time).

More information about the position can be found here: https://software-oasis.com/apply-now-new-postdoc-position/


6) Post-doctoral position at Institute of Light and Matter (iLM), Lyon University, France
12 months’ position available at the Institute of Light and Matter (iLM), Lyon University, France.  
ATMOS research group
Alain Miffre : Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. 
 
Scientific context and motivations
Atmospheric  particles  are  complex  physical objects  presenting  a wide  range  of sizes,  a  highly  irregular
shape and a variety of chemical compositions, which prevent from quantifying their impact on the Earth’s
climate (IPCC, 2021). Indeed, for such complex-shaped particles, no analytical solution to the Maxwell’s
equations exists. To quantify the interaction of such complex systems with the electromagnetic field, as
is required for addressing climate issues, light scattering numerical simulations have then been exploited.
However, these numerical models rely on simplying assumptions, which should be carefully checked and
for  that  laboratory  measurements  are  coveted.  In  this  context,  of  prime  importance  is  the  physical
process of light  backscattering  from a  fundamental  point of view but  also from  an applicative  point of
view,  as  future  lidar  satellite  missions  (Earth  Care,  ACCP)  will  be  based  on  this  physical  process,  as
underscored  by  CNES  in  France.  However,  it  is  only  recently  that  light  backscattering  has  been  for  the
first  time  observed  in  a  controlled-laboratory  experiment  for  an  ensemble  of  particles  embedded  in
ambient air (Miffre et al., 2016). For the first time to our knowledge, a laboratory polarimeter has hence
been designed and operated to quantify light backscattering by atmospheric particles (Miffre et al., 2016,
2019).  This  Pi-polarimeter  allows  quantifying  the  spectral  behavior  of  atmospheric  particles  while
retrieving the particles deviation from isotropy.  
 
Work plan  
The  present  call  is  centered  on  the  spectral  properties  of  atmospheric  particles.    Indeed,  no  aerosol
spectroscopic database exists as is the case with the HITRAN database for molecules.  This work is aimed
at contributing to fill this gap by extending our unique laboratory approach to the IR spectral range, which
is key for aerosol identification (Burton et al., 2016). More precisely, fundamental laboratory intensive
work is required to develop the Pi-polarimeter in the IR spectral range and unambiguously retrieve the
spectral  and  polarimetric  behavior of  studied  aerosol particles.  Such  unique  laboratory measurements
will then be made available to a broad scientific community, in France and abroad through publications
and conferences.  
 
Candidate profile
To  carry  out  this  research  project,  candidates  must  hold  a  PhD  in  spectroscopy  or  /  and  polarimetry.  
Complementary skills in atmospheric physics will be appreciated but are not essential. This 12 months’
position will be located at the Institute of Light and Matter (iLM) under the supervision of A. Miffre from
the  ATMOS  research  group.  Candidates  are  encouraged  to  use  the  below  contact  information  for
discussing in detail if this post-doctoral position may be interesting for them.  
 
Contact information
Alain Miffre
Associate Professor in Physics at iLM
Atmos Research group at ILM (Prof. Rairoux’s group)
Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.  

7) Research Expert in Exoplanet Modelling | KU Leuven and the Royal Observatory of Belgium
The Institute of Astronomy (IoA) of the Department of Physics and Astronomy of KU Leuven and the Royal Observatory of Belgium (ROB) seek a highly motivated and skilled research expert in the field of exoplanet modelling. This recruitment is embedded in the research profile "STELLA: Study of Terrestrial Exoplanets' (Prf2021022) within the FED-tWIN framework, the Programme of sustainable research cooperation between the Belgian federal scientific institutes and the universities. The position is a full-time position (50% at the IoA, 50% at the ROB with open-ended contracts). In particular, we are looking for an excellent recognised scientist who can bridge and strengthen the expertise domains at the IoA and the ROB in the field of numerical models simulating the evolution of exoplanetary atmospheres, surfaces, and interiors. The overall short-term objective for the FED-tWIN researcher is to advance our understanding of close-in rocky exoplanets by linking theoretical models for the planet interior and its evolution (expertise domain of the ROB) with exoplanet atmosphere models including complex chemistry (expertise of KU Leuven). The long-term ambition of this FED-tWIN research is to boost our knowledge of the conditions favorable for a planet to be habitable and for life to develop. These novel models simulating the evolution of the atmospheres, interiors and surfaces of planets over billions of years will be crucial for an optimal interpretation of the current and future exoplanet observations in terms of the highest possible accuracy.

8) Thèse, HDR, Séminaire, Cours en ligne

    a) Disks around evolved binaries: do they form second-generation planets? | Jacques Kluska (KU Leuven) | December 16th, 4PM
https://us02web.zoom.us/j/86219181494?pwd=RHUxWlNWMC9TSVpFbFpWMlBiM3Nadz09

Meeting ID: 862 1918 1494
Passcode: 2Wxpc8
Abstract: Most of the planets were formed around young stars. But can they also form around dying stars? The origin of the diversity and comple: ity of the detected exoplanetary systems stems from how they form in protoplanetary disks. These disks are intensively studied around young stars thanks to the high-angular resolution provided by the VLT or ALMA. However, similar disks are also found around evolved stars, namely post-AGB binaries, raising the exciting but yet unanswered possibility of second-generation planet formation around evolved stars.

We have now the possibility to probe this possibility using high angular resolution instruments. In this talk, I will show the latest results of an extensive observing campaign of these disks using infrared interferometry at the VLTI (PIONIER, GRAVITY, MATISSE) and an innovative image reconstruction technique to decipher the complex interferometric signal. These observations show that these disks share many similarities with protoplanetary disks around young stars.

Whether or not planet formation is possible at the end of stellar evolution, these disks enable us to test planet formation processes in a parameter space that is unmet around young stars (e.g., short disk lifetime, high stellar luminosity) and further constrain planet formation processes.

b) OPS-SAT Space Lab: How increased onboard processing power has changed the way we operate our satellite | David Evans (ESA)  | Mardi 7 décembre, 17h
CurieSat (le centre spatial universitaire de Sorbonne Université) et CENSUS (le centre pour les nanosatellites recherche pour les sciences de l'univers de PSL) vous invite à suivre le cycle de webinaires mensuels autour des cubesats et du développement du NewSpace.

Nous avons le plaisir de vous inviter au prochain webinaire qui aura lieu, le mardi 7 décembre, à 17h. Le résumé est sur l’affiche ci-jointe et le lien zoom est :

https://zoom.us/j/99366774964?pwd=QmI0V25XZ3VqNmZwR3lXZDRDMHdxUT09

Meeting ID : 993 6677 4964
Passcode     : D97pY8

Ce webinaire s'intitule "OPS-SAT Space Lab: How increased onboard processing power has changed the way we operate our satellite” et il sera présenté par David Evans (ESA). Ce webinaire présentera la mission OPS-SAT développé par l’ESA et lancé en décembre 2019. Cette mission a pour objectif de tester et de valider de nouvelles techniques de contrôle de mission et de systèmes embarqués. Ce webinaire sera en anglais.


N’hésitez pas à vous connecter le 7 décembre et à diffuser cette annonce.
 
Cordialement,
Coralie Neiner (CENSUS) et Nicolas Rambaux (CurieSat)   
c) Predicted signatures of planet formation and orbital evolution in the emission of protoplanetary discs | Clément Baruteau | lundi 13 décembre à 16h
Résumé:
The classical picture of protoplanetary discs being smooth, continuous structures of gas and dust has been challenged by the growing number of spatially resolved observations. These observations tell us that rings, gaps, large-scale asymmetries like spirals or arcs are common features of the emission of protoplanetary discs, which are often interpreted as signatures of the presence of unseen planets. During this online seminar, I will present some of our recent work on how the formation and orbital evolution of planets can impact the dynamics and the emission of gas and dust in protoplanetary discs. In particular, I will discuss the possibility that a single giant planet may acquire a substantial eccentricity in its protoplanetary disc, and what observational signatures this mechanism predicts.


Pour y accéder, comme d’habitude, deux options:

CarbonFreeConf pour avoir accès à toutes les fonctionnalités (e.g. sondages):

www.carbonfreeconf.com/join-conference/287/RvLRUGl3OMe1cwqCLtip57nQbMfBaV

Et zoom:

https://us06web.zoom.us/j/89029779416?pwd=SXByNUlzZTdTVy9VR0F0aXNicnJmQT09