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Portail > Offres > Offre UMR5274-MELCOL-009 - H/F Postdoc Méthodes innovantes d'analyse des séries temporelles des courbes de lumière des jeunes étoiles.

Postdoc: Innovative methods for time series analysis of the light curves of young stars.

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : mercredi 20 janvier 2021

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General information

Reference : UMR5274-MELCOL-009
Workplace : GRENOBLE
Date of publication : Friday, November 20, 2020
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 March 2021
Proportion of work : Full time
Remuneration : 2648 gross monthly
Desired level of education : PhD
Experience required : Indifferent

Missions

Tremendous progress has been made in characterizing the photometric variability of young stars, thanks to continuous light curves provided by space missions (e.g. Kepler/K2, TESS, etc.). Of these, the so-called dippers (e.g., Cody et al. 2014) offer a direct window onto physical processes operating close to the star, including disk warps, dusty inner disk winds, and magnetospheric funnel flows. Up to now, the photometric time series have been submitted to conventional period-search algorithms (e.g., periodogram, wavelet transform).

Activities

The goal of the proposed postdoctoral position is to go further in the analysis of the shape and temporal evolution of the light curves of young stars by applying innovative algorithms (e.g., DTW) and/or new approaches provided by AI. Applicants are expected to have a strong background in time-series analysis, including knowledge of innovative algorithms that may be relevant to the considered datasets. Experience in astronomical or physical time series is desirable but not mandatory.

Skills

The candidates applying for the position should have a PhD in physics or astronomy (Postdoc I), or in a related field (Postdoc II) relevant to the advertised positions. Interested candidates should send their curriculum vitae, a publication list, a brief statement of research interests outlining their suitability and motivation for one of the positions above, and arrange for three letters of reference.

Work Context

This position is fully supported for two years in the framework of the ERC project SPIDI: Star- Planets-Inner Disk Interactions, http://www.spidi-eu.org (Grant Agreement No 742095). The SPIDI project aims at exploring the inner regions of circumstellar disks around young stars were close-in planets are in the process of formation.

The workplace is the Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), France. Around 160 people work at IPAG, including 60 staff scientists and professors, 30 staff engineers, technicians, administrative personnel, and 70 contracted personnel, which include around 20 postdocs and 30 PhD students. Our research themes embrace the formation of solar systems, from the initial phases of the core collapse, through protostellar disk physics and chemistry, up to the study of exoplanets. We also work on accretion-ejection processes around young stellar objects and compact objects. Our activities include laboratory measurements, high performance computing, as well as the design and operation of cutting edge instrumentation for space missions and ground-based telescopes, notably for the future European Extremely Large Telescope (ELT).

The postdoctoral position offers the opportunity for astronomers to work in a world- class research environment and pursue their career in a very dynamic and competitive field of research.

The appointment is for two years and may start as early as March 2021. Funds are available for computing, publications, travel, and other needs. IPAG welcomes applicants with diverse backgrounds and experiences. We regard gender equality and diversity as a strength and an asset.

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