日本主導のX線衛星XRISMが、巨星の星風を相棒の中性子星が受け止める様子を初めて直接観測した。約1.3万光年先のBP Crucis。ガスは時速約54万kmで中性子星へ向かっていた。長く推測されてきた降着の理屈が、観測で裏づけられた。

https://www.universetoday.com/articles/xrism-makes-first-ever-detection-of-a-pulsar-feeding-from-a-companions-stellar-wind

#宇宙 #XRISM

For the first time, we watched a dead star literally eat the wind of its living partner, proving cosmic hunger is real. #XRISM sugataai.com/blog/xrism-m...

Cientistas do XRISM observaram pela primeira vez um pulsar se alimentando do vento estelar de uma estrela companheira no sistema BP Crucis, a 13.000 anos-luz da Terra.

#xrism #pulsar #ventostelar #astronomia #descoberta

吸収線の速度成分が分かれても、AGNの風の仕事率は一意に決まりません。Porquetの総説から、XRISMの分光、多相構造、密度と形状の仮定、核の現在と銀河の長期平均を比べる限界を整理する専門家向け記事。

https://note.com/hydezero/n/n38121567bc28
#天体物理学 #AGN #XRISM

▶️ Watch the full episode on YouTube and subscribe for more cosmic discoveries.

youtu.be/7qsmQxR8KV4?...

#AstroBeat #BlackHoles #XRISM #Astronomy #TheAstroSociety

A pulsar has been seen gathering the wind from a giant companion star.

XRISM directly observed the stellar outflow being captured by the compact object. That captured material powers strong X-ray flares.

#Spaceflightpedia #NASA #JAXA #XRISM #XRayAstronomy #Pulsar #SpaceScience