Bonjour,
Bien cordialement,
Thierry
L'appel de temps 2023B du CFHT est maintenant ouvert. Pour plus d'information sur l'appel, veuillez consulter le lien ci-dessous: https://www.cfht.hawaii.edu/en/science/Proposals/
Veuillez noter que certains systèmes du CFHT ne seront pas disponible les 11, 12 et 13 mars 2023. Veuillez consulter cette page web pour de plus amples informations:https://www.cfht.hawaii.edu/en/science/Proposals/#outage
Nous anticipons cependant que Kealahou K1 restera fonctionnel lors de la panne.
Du temps sur Gemini Nord et Gemini Sud sera disponible aux astromones français en 2023B. La date limite pour les demandes est fixée au 1er avril 2023. Pour plus de détails, veuillez consulter la page ci-dessous: https://www.cfht.hawaii.edu/en/science/Proposals/Gemini/
Meilleure des chances à tous les proposants et proposantes,
Daniel Devost
2) 2023 EnVision venus science workshop | 9-11 May 2023 | Berlin
Dear Venus science colleague,
The Organising Committee would like to announce that the registration for the 2023 EnVision Venus science workshop is open.
The registration can be done here. The deadline is 10 April 2023.
Hereby also a kind reminder to submit you Abstracts here. The submission deadline is 1 March 2023, 23:59 CET.
The workshop programme will be organised according to the following themes:
- Mission overview and status
- Science payloads and experiments
- EnVision observation philosophy and strategy for Venus
- Scientific research and activities in support of the EnVision preparation and exploitation
- Synergies with other Venus missions
- Next steps towards the EnVision “Red Book” (report for the mission adoption)
- Communicating the EnVision story
The 2023 EnVision Venus science workshop Organising Committee
3) Science Strategy Teams of the JAXA Martian Moons eXploration (MMX) Mission
I am pleased to invite you to respond to the “Announcement of Opportunity” for the membership of the Science Strategy Teams of the JAXA Martian Moons eXploration (MMX) Mission (ESA-SCI-C-AO-007).
The Announcement of Opportunity, containing the information needed by the proposers can be found at the following link: https://www.cosmos.esa.int/web/mmx-ao-sst-2023
The deadline for submission of proposals is 22 March 2023 at 12:00 (noon) CET.
Proposals must be prepared in accordance with the information provided at: https://www.cosmos.esa.int/web/mmx-ao-sst-2023 and must be submitted electronically to ESA following the instructions given in the same page.
Best regards,
Prof. Günther Hasinger
La thématique de ce poste est axée sur les activités de recherche au sein du CIMAP (Centre de recherche sur les ions, les matériaux et la photonique) dédiées à l’interaction des rayonnements ionisants avec la matière. Cette thématique est portée par les équipes MADIR (MAtériaux, Défauts, IRadiation, responsable Philippe Boduch) et AMA (Atomes, Molécules, Agrégats, responsable Jean-Yves Chesnel). L’activité astrophysique de laboratoire de MADIR porte sur l’effet des rayonnements ionisants sur des analogues de glaces et de silicates présents dans le milieu interstellaire et les systèmes stellaires, les faisceaux du GANIL permettant de simuler les effets des rayons cosmiques et du vent solaire. Les activités de l’équipe AMA se concentrent sur la stabilité et la dynamique de fragmentation des systèmes multi-atomiques après leur excitation et/ou ionisation par impact ionique ou photonique, ainsi que sur la croissance moléculaire au sein d’agrégats moléculaires.
6) Post-doctoral position at IRAP on plasma physics
Open postdoctoral position at IRAP in Toulouse on the development of plasma specification models at Saturn, Uranus, and Neptune
A postdoctoral position is open in the Planets, Environments, and Space Plasmas group of IRAP (PEPS, https://www.irap.omp.eu/en/research-team/peps/) to work on an ESA-funded project related to the plasma environments of Saturn, Uranus, and Neptune.
The initial appointment will be for 12 months with possibility of renewal pending mutual agreement. A start date of 1st May 2023 is anticipated.
Details on the initial 12-month project are given below. Requests for information and applications can be sent to Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser..
Project description:
The plasma and radiation environments around the giant planets Jupiter, Saturn, Uranus, and Neptune, are a major threat for artificial satellites (surface charging, internal charging, solar panel degradation, upset events, etc...). Environment specification models ready to use by the industry and space agencies exist at Jupiter, but not at the three other planets.
A postdoctoral position is open to work on an ESA-funded project with Dr. Quentin Nénon and Dr. Nicolas André at IRAP, in collaboration with partners at ONERA (France), Max Planck Institute (Germany), and ESA (The Netherlands).
At IRAP, the postdoctoral researcher will focus on the development of thermal plasma specification models. Specifically, plasma moment datasets available at Saturn, Uranus, and Neptune, will be reviewed (Pioneer, Voyager, Cassini, electrons and ions, multiple sensors) and cross-compared to check for consistency, see if instrumental caveats have been corrected, identify poor-quality data, and finally extract plasma moments of highest quality possible in collaboration with instrument teams. Correlation between plasma moments and their variability in space and time will be studied.
A modeling framework which could be applied for thermal plasma specification at the three planets will be proposed. An implementation of this framework will be conducted at Saturn to develop a plasma model that ESA will then use for the design of future space missions to the ringed giant.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
7) Poste permanent à l'ISAE-SUPAERO sur les atmosphères planétaires
ISAE-SUPAERO is one of the leading European institutes dedicated to high-level multidisciplinary engineers in all fields of aeronau:cs and space. As part of its development policy, ISAE is hiring an associate professor/professor in planetary atmospheres. The proposed position is in the SSPA team (Space Systems for Planetary applications) of the Electronics, Optronics Signal Department at ISAE-SUPAERO (https://www.isae.fr/deos).
The successful candidate will be involved in the development of the Institute’s research related to the field of planetary atmospheres. An understanding of space instrument design is strongly desired.
We are looking for candidates who complement our current research program and who can fit and expand our existing areas of expertise (including the very important case of climate change in the terrestrial environment). Relevant areas of research interest in the department include the design of planetary geophysical instruments and the exploitation of data from ongoing planetary missions (such as InSight and Mars 2020), participation in CNES experiments such as STRATEOLE-2, as well as the study of missions to Venus in collaboration with the Jet Propulsion Laboratory/Caltech.
Successful candidates must be able to generate funding for part of their activity to support research collabora:ons. Successful applicants are also expected to publish results in major relevant journals and undertake effective science communication to academia, industry, and the public. An ability to establish relationships with laboratories specialized in environmental applica:ons is a key asset.
They will contribute to the development and anima:on of research and teachings around their own themes. They will ensure the fundamental missions of a teacher in their field of competence (face to face teaching, management of teaching programs). They will also be responsible for maintaining and developing relations and cooperation with regional, national, international academic and industrial partners.
Key duties for research include :
- Developing research on a theme related to the field of planetary atmospheres (simula:on, instrumentation, data analysis...), with applications related to sustainable development.
- Contribute to the scientific influence of ISAE-SUPAERO and its national and international influence through participation in space missions, publication in scientific journals, participation in conferences, and the organization of scientific events.
- Contribute to research actions carried out in close partnership with industry and academic or ins:tu:onal partners (e.g.: OMP, LMD, DGA, CNES, JPL, NASA, ESA, etc.);
- Participate in national and international research projects within the framework of the Institute's strategy.
- Participate in the supervision of doctoral and undergraduate student projects.
For teaching aspects, the successful candidate will:
- teach in the field of planetary science and contribute to the understanding of scientific issues related to climate change for ISAE-SUPAERO training.
- contribute to the development and adaptation of programs and the promotion of all ISAE-SUPAERO training courses.
- invest herself/himself in organizational responsibilities of a cross-cutting nature in the Institute's training courses.
The successful candidate has a PhD in Planetary or Earth Sciences, with a few years of post- doc positions. She/he has a strong taste for both teaching and research in planetary science and associated instrumenta:on, and ideally, she/he is already involved in planetary missions. She/he has an international research experience validated by international-level publications. The successful candidate has a demonstrated the ability to conduct research projects in collaboration with institutional and industrial partners.
A capability to communicate in French would be appreciated but is *not* mandatory. Contact Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.
https://recrutement.isae-supaero.fr/fr/annonce/1939041-enseignant-chercheur-en- atmospheres-planetaires-hf-fdp-n897-31400-toulouse
8) Bourse JSPS Standard CNRS – Société japonais pour la promotion de la science (Japon)
https://international.cnrs.fr/campagne-cnrs/
La Société japonaise pour la promotion de la science (JSPS) offre pour cet appel 8 bourses du programme Standard destinées à de jeunes chercheurs qui souhaitent effectuer un stage de recherche de 12 à 24 mois dans un laboratoire japonais.
Critères d’éligibilité : Les bourses sont destinées aux post-doctorants ayant soutenu leur thèse depuis moins de 6 ans (après le 2 avril 2017). Elles sont destinées à de jeunes chercheurs de nationalité française ou jeunes chercheurs étrangers ayant soutenu leur thèse en France et justifiant d’au moins trois ans d’activité dans une université ou organisme de recherche en France.
Thématiques : Toutes les disciplines sont concernées.
Date limite de candidature : 20 Avril 2023
9) Thèse, HDR, séminaires
a) HDR| Susan Conway | Lundi 6 mars à 14h
Je vous invite à la soutenance de ma HDR le lundi 6 mars à 14 heures intitulé "Paysages planétaires et le rôle des composants volatils dans leur formation". Le soutenance se déroulera en Anglais. Un résumé se trouve ici: https://uncloud.univ-nantes.fr/index.php/s/qH9KjfdXy9tLGpz
La soutenance sera accessible par visio avec les coordonnées suivantes
Link: https://univ-nantes-fr.zoom.us/j/86589224558?pwd=enBXZHdJSkdsV0lYekpwcHRyQUQrUT09
Meeting ID: 865 8922 4558
Passcode: 151943
Join by SIP: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.
You are cordially invited to the public defence of my "habilitation" (HDR) on Monday 6th March at 2pm entitled "Planetary landscapes and the role of volatiles in their making". It'll be held in English. A short summary can be found here: https://uncloud.univ-nantes.fr/index.php/s/qH9KjfdXy9tLGpz
The defence will be made available via videoconference: https://univ-nantes-fr.zoom.us/j/86589224558?pwd=enBXZHdJSkdsV0lYekpwcHRyQUQrUT09
Meeting ID: 865 8922 4558
Passcode: 151943
Join by SIP: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.
b) Thèse | Nour Skaf | Self-optimization of adaptative optics and characterization of exoplanetary systems | Jeudi 2 Mars, 14h30
https://www.youtube.com/channel/UCzPLngWE_6JVuJ4szh8U-RQ
With over 5200 exoplanets discovered, our understanding of planet formation and evolution is challenged. Studying their atmosphere and formation processes is crucial to ultimately finding and characterizing Earth-like planets. In this context, my PhD revolves around three aspects aimed at this purpose.
I studied exoplanets’ atmosphere, with three transiting hot Jupiters (WASP-127b, WASP-79b, and WASP-62b), observed in transit with the Hubble Space Telescope in the near-infrared. Their atmospheric analysis revealed significant water features and the possible presence of iron hydrate (FeH).
Besides the transit method, the direct imaging technique is unique in assessing the population of long-period giant planets. However, it is highly challenging and requires overcoming the large contrast at short angular separation, in the presence of optical distortions from the Earth’s atmosphere and the optics within the instrument. They both induce speckles, which mimic exoplanet signals. Adaptive optics technique aims to correct the atmospheric speckles, but is blind to some of the instrument’s ones, also called non-common path aberrations (NCPA). I developed an algorithm to continuously recognize and correct NCPA during night-sky observations. DrWHO (direct reinforcement wavefront heuristic optimization) uses the focal plane camera to self-optimize the AO system. I validated it with simulations, then on-sky, at the SCExAO instrument at the Subaru Telescope in Hawai`i, demonstrating its efficiency, robustness, and flexibility.
Direct imaging is now increasingly powerful in understanding how planets form by observing circumstellar disks. An illustration is the emblematic beta Pictoris system, a star surrounded by a debris disk and at least two giant planets, key to understanding disk-planet interactions and evolution. I analyzed the first high-contrast imaging data in the mid-infrared of the beta Pictoris system, observed with the NEAR-VISIR instrument on the VLT. Although planet b was not detected, I put constraints on a possible circumplanetary disk around it. The data reveals multiple disk structures, including the known southwest dust clump, first observed in 2003. Using archival observations covering a 16-year baseline, I found its orbit to be Keplerian, and possibly indicating a planet.
To conclude, there is room for improvement in the instrumentation development with DrWHO. This opens the road to use focal plane information to reach higher contrast, for the upcoming generation of larger telescopes, and unveiling exoplanets population characteristics.
c) Thèse | Elise Clavé | Analyses spectroscopiques multi-techniques avec SuperCam, Mars 2020 -- Application à l’étude des carbonates | Lundi 6 mars 13h30
Bonjour,
j'ai le plaisir de vous informer que ma soutenance de thèse se tiendra le lundi 6 mars 2023 à 13h30 dans l'amphi de l'IMS, sur le campus de l'Université de Bordeaux à Talence (351 cours de la Libération).
La soutenance est ouverte au public et sera également accessible en distanciel via zoom : https://u-bordeaux-fr.zoom.us/j/85725201694
Elle portera sur les "Analyses spectroscopiques multi-techniques avec SuperCam, Mars 2020 -- Application à l’étude des carbonates"
Résumé :
Dans le cadre de la mission Mars 2020 (NASA), l'instrument SuperCam permet la caractérisation de cibles géologiques à plusieurs mètres de distance autour du rover, notamment via des techniques de spectroscopie basées sur l'utilisation d'impulsions laser -- LIBS, Raman, luminescence -- et de la spectroscopie de réflectance du rayonnement solaire dans les domaines visible et infrarouge (VISIR). Les travaux de thèse traitent de l'intérêt de combiner ces différentes techniques pour renforcer les interprétations géologiques, en particulier pour la caractérisation des carbonates. Pour cela, nous cherchons à approfondir la compréhension des processus physiques mis en jeu, des données spectrales, et des outils numériques qui permettent d'en extraire l'information. Nous avons mis en place un nouveau banc de test, pour tirer parti de la résolution temporelle dans le cadre des spectroscopies LIBS, Raman et de luminescence, en conditions atmosphériques martiennes. À travers l'étude de la luminescence induite par plasma, et de sa faisabilité sur Mars, nous avons exploré la diversité des émissions associées au plasma d'ablation, les régimes d'excitation, et l'influence des conditions atmosphériques. En revanche, l'analyse du fond continu détecté dans les spectres Raman reste à approfondir. Par ailleurs, nous avons assemblé une base de données LIBS - Raman - VISIR pour explorer différentes stratégies d'analyse de données mono- ou multi-techniques. Notre approche numérique, basée sur des forêts aléatoires, a mis à jour des biais liés à la base de données d'apprentissage ou à l'algorithme, mais surtout des situations dans lesquelles la fusion de données permet de renforcer les performances de classification et de révéler des corrélations entre les variables des différentes techniques. Nous avons ensuite appliqué les leçons tirées de ces études aux analyses effectuées sur Mars avec SuperCam. En particulier, nous avons identifié plusieurs phases de carbonates dans le cratère Jezero, montrant l'efficacité de la synergie des techniques spectroscopiques de SuperCam pour cette étude, et permettant de tracer de multiples épisodes d'altération aqueuse dans le cratère.
