{"podcast":{"title":"Ça Se Passe Là-Haut","slug":"a-se-passe-l-haut-745418","podcast_index_feed_id":745418,"rss_url":"https://casepasselahaut.lepodcast.fr/rss","website_url":"https://www.ca-se-passe-la-haut.fr","image_url":"https://uploads.podcloud.fr/uploads/covers/3b/aa/3baa6f78bfcc5440934ebcff17967716e8bd404a.jpg","author":"Eric Simon","episode_count":1773,"summary":"Astronomie, astrophysique, cosmologie, astroparticules...","last_synced_at":null,"page_url":"https://stenobird.com/podcast/a-se-passe-l-haut-745418"},"episode":{"title":"#1751 : Le mystère de Gamma Cassiopeiae enfin résolu","slug":"1751-le-myst-re-de-gamma-cassiopeiae-enfin-r-solu","published_at":"2026-03-25T17:23:00+00:00","page_url":"https://stenobird.com/podcast/a-se-passe-l-haut-745418/1751-le-myst-re-de-gamma-cassiopeiae-enfin-r-solu","show_page_url":"https://stenobird.com/podcast/a-se-passe-l-haut-745418","url":"https://www.ca-se-passe-la-haut.fr/2026/03/le-mystere-de-gamma-cassiopeiae-enfin.html","audio_url":"https://stats.podcloud.fr/casepasselahaut/numero-1751-le-mystere-de-gamma-cassiopeiae-enfin-resolu/enclosure.b4fa16fba53b72133d6c593f5274bfc2064a064dabc66eb7234f5a588e6abd6f.mp3?p=f","summary":"Des observations à haute résolution obtenues grâce au spectromètre Resolve du télescope spatial XRISM ont permis de résoudre le mystère de l’origine de l’émission X atypique de γ Cassiopeiae (γ Cas), un problème ouvert depuis près d’un demi‑siècle... Les résultats, récemment publiés dans Astronomy & Astrophysics, constituent la première démonstration directe reliant les rayons X durs de γ Cas au mouvement orbital de sa compagne. Source Orbital motion detected in γ Cas Fe K emission lines Yaël Nazé et al. A&A Volume 707 (24 March 2026) https://doi.org/10.1051/0004-6361/202558284 Illustrations Vue d'artiste du système binaire Gamma Cassiopeiae (ESA, Y. Nazé) Yael Nazé","meta_description":"Des observations à haute résolution obtenues grâce au spectromètre Resolve du télescope spatial XRISM ont permis de résoudre le mystère de l’origine de l’…","key_points":[],"chapters":[],"topics":[],"duration_seconds":554,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/a-se-passe-l-haut-745418/episodes/1751-le-myst-re-de-gamma-cassiopeiae-enfin-r-solu/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/a-se-passe-l-haut-745418/1751-le-myst-re-de-gamma-cassiopeiae-enfin-r-solu.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}