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天文学家在附近红矮星AD Leonis上捕捉到大量的恒星耀斑_我的网站

一 |     “太阳耀斑是从恒星表面发出的突然爆炸，”京都大学的Kosuke Namekata在一份声明中解释道。    Birkenstock took a big step forward on Wall Street this week, taking the nearly 250-year-old German shoe and sandal maker public.The footwear, often seen as a counter culture shoe for hippies, and in more recent years influencers, has become must-have footwear for many people, but Birkenstock's Initial Public Offering, or IPO, which was originally priced at $46 per share, didn't attract the dress shoe-wearing stock brokers on Wednesday.Shares opened at $41, near the lower end of its expected range of $44 to $49 set a week prior, as Birkenstock CEO Oliver Reichert rang the opening bell in a room surrounded by traders sporting the opened-toed footwear and others waving the sandals in the air.Birkenstock Holding Ltd. sold nearly 10.8 million shares in the offering, which raised about $495 million on the day. Its shareholders sold an additional 21.5 million shares, according to the Associated Press."Through the strong reputation and universal appeal of our brand -- enabling extensive word-of-mouth exposure and outsized earned media value -- we have efficiently built a growing global fanbase of millions of consumers that uniquely transcends geography, gender, age and income," Birkenstock said in a recent regulatory filing with the Securities and Exchange Commission, according to the AP.What started out in 1774 as a somewhat frumpy, but functional arch support sandal has transformed into a cult fashion item and billion dollar business, bolstered with support from the recent blockbuster hit "Barbie" when Margot Robbie's character is forced to choose between high heels or the strappy suede footwear.In tandem with the opening on Wall Street, Birkenstock hosted three consumer activations in public parks throughout Manhattan and Brooklyn.To highlight New York as "the city that never stops walking," the brand created what it dubbed "Birkenfields" for a public sensory experience that explored the brand's nearly 250-year heritage and expertise in foot health.The global brand is deeply rooted in foot health maintenance as well as a family tradition of shoemaking: Its inventor sought to provide function, quality and tradition as Birkenstock's core values.Over 95% of Birkenstock products are assembled in Germany with more than 90% of their materials and components sourced from Europe, ensuring the brand meets "the highest environmental and social standards in the industry by operating state-of-the-art scientific laboratories for materials testing," according to a company press release.。但在AD Leonis看到的最强大的爆炸可以被认为是超级耀斑，这种东西很少从我们的太阳中看到，但更常见于高度活跃的红矮星。“我们对超级耀斑的分析导致了一些非常有趣的数据，”Namekata补充说，在超级耀斑的氢原子中看到的能量大约是我们自己的太阳的典型耀斑的10倍。在周四发表在《日本天文学会出版物》上的一篇论文中，Namekata和同事描述了使用京都大学新的Seimei望远镜持续一周观察AD Leonis的情况。Namekata说：“这是第一次报道这种现象，这要归功于Seimei望远镜的高精度。”他指出，该团队在观测的第一个晚上就发现了超级耀斑。研究负责人 Kazunari Shibata说，这项工作可能有助于预测来自我们自己太阳的超级耀斑，这可能会对我们的卫星和地球上的电力基础设施造成重大损害。也许更有意义的是，它可以帮助回答宇宙中一些最大的问题。“我们甚至可以开始了解这些释放如何影响其他星球上生命的存在或出现。

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