Exoplanet with an Exomoon Transiting a Sun-like Star (Simulation with Pandora) скачать в хорошем качестве

Exoplanet with an Exomoon Transiting a Sun-like Star (Simulation with Pandora)

This animation demonstrates the functionalities of the open-source python code Pandora [1]. Pandora is based on our modern astrophysical understanding of exoplanetary transits. A transit occurs when an exoplanet (with or without an exomoon) passes in front of a distant star and thereby reduces the amount of star light observed on Earth. In reality, all we can observe on Earth is the variation of the total amount of light from a given star, its so-called light curve. We cannot actually see the planetary silhouette or the stellar disk, as shown in this animation. Nevertheless, it is in principle possible to reconstruct the orbital dynamics from that light curve. This is what Pandora can do. And vice versa, it can also model the light curve that results from a given transit of an extrasolar planet with a moon. The details of this simulated transit are given in the peer-reviewed publication by Michael Hippke and René Heller [2]. In brief, it shows a Sun-like star (with real colors [3]) that is transited by a Jupiter-sized planet with giant, Neptune-sized moon. The planet-moon system has an orbital period of one year around the star and it has an orbital period of 1.28 days around its local center of mass. The entire video (24 seconds) corresponds to 14.4 hours of simulated real time. The sound has been created during post production by musician Joachim Rust. Astrophysics: Michael Hippke: http://www.jaekle.info René Heller: http://www2.mps.mpg.de/homes/heller Sound Design: Joachim Rust: http://www.joachimrust.de [1] https://github.com/hippke/Pandora [2] Hippke & Heller (2022) Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/202... (see Sect. 3.2 therein) [3] Harre & Heller (2021) Astronomische Nachrichten, Vol. 342, pp. 578-587, free pre-print: https://arxiv.org/abs/2101.06254