{"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":1788,"summary":"Astronomie, astrophysique, cosmologie, astroparticules...","last_synced_at":"2026-09-20T18:21:08.323098+00:00","page_url":"https://stenobird.com/podcast/a-se-passe-l-haut-745418"},"episode":{"title":"#1776 : Découverte de sources lumineuses de rayons X \"hyper-mous\"","slug":"1776-d-couverte-de-sources-lumineuses-de-rayons-x-hyper-mous","published_at":"2026-09-12T19:40:00+00:00","page_url":"https://stenobird.com/podcast/a-se-passe-l-haut-745418/1776-d-couverte-de-sources-lumineuses-de-rayons-x-hyper-mous","show_page_url":"https://stenobird.com/podcast/a-se-passe-l-haut-745418","url":"https://www.ca-se-passe-la-haut.fr/2026/09/decouverte-de-sources-lumineuses-de.html","audio_url":"https://stats.podcloud.fr/casepasselahaut/numero-1776-decouverte-de-sources-lumineuses-de-rayons-x-hyper-mous/enclosure.f3b31dcea5b0ce002e5b79317ce1d6f6ea6fee3cc90717ee9625f40b4af27f19.mp3?p=f","summary":"Grâce au télescope spatial Chandra, des astrophysiciens ont découvert une nouvelle classe d'objets au comportement inédit. Ces objets émettent des rayons X d'énergie exceptionnellement faible, et un rayonnement ultraviolet intense. Ils pourraient permettre de résoudre non pas une, mais deux questions fondamentales de l'astrophysique. L'article est publié dans Nature Astronomy. Source Hypersoft X-ray sources as a low-energy class of luminous cosmic emitter Mustafa Muhibullah et al. Nature Astronomy (9 september 2026) https://doi.org/10.1038/s41550-026-02959-7 Illustration Images de Chandra de NGC 3379 et NGC 4472 dans deux gammes d'énergie révélant des sources de rayons X hypermous (Muhibullah et al.) Mustafa Muhibullah","meta_description":"Grâce au télescope spatial Chandra, des astrophysiciens ont découvert une nouvelle classe d'objets au comportement inédit. Ces objets émettent des rayons…","key_points":[],"chapters":[],"topics":[],"duration_seconds":478,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/a-se-passe-l-haut-745418/episodes/1776-d-couverte-de-sources-lumineuses-de-rayons-x-hyper-mous/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-745418/1776-d-couverte-de-sources-lumineuses-de-rayons-x-hyper-mous.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}