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银河系中心的强磁场可能抑制恒星形成
#科学

银河系中心的人马座C(Sagittarius C)是一处物质丰富的恒星育婴室,却长期以来呈现异常低的恒星形成率。天文学家利用韦伯太空望远镜的观测资料推测,该区域中的强磁场可能是抑制恒星形成的主因。人马座C距离银河系中心的超大质量黑洞约 200 光年,是银河中心附近一个重要的恒星形成区域。这里拥有大量高密度的气体与尘埃,理论上应能有效孕育众多恒星,然而实际观测却显示,当地的恒星形成率远低于预期。透过韦伯太空望远镜的红外线观测,天文学家得以穿透稠密的尘埃,窥见银河中心附近的恒星诞生现场。韦伯的影像中,人马座C周围可见大量细长的丝状结构。这类结构过去曾由地面望远镜观测到,韦伯望远镜的资料则提供了更清晰的画面与有力的佐证。研究团队推测,这些丝状结构的形成与当地强磁场密切相关。银河系中央黑洞所产生的强大潮汐力使气体剧烈流动,进而拉伸并增强周围的磁场,而磁场则进一步形塑出这些丝状结构。
NASA Webb Explores Effect of Strong Magnetic Fields on Star Formation
天文館:銀河中心強磁場可能抑制恆星誕生



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银河系中心的强磁场可能抑制恒星形成
#科学

银河系中心的人马座C(Sagittarius C)是一处物质丰富的恒星育婴室,却长期以来呈现异常低的恒星形成率。天文学家利用韦伯太空望远镜的观测资料推测,该区域中的强磁场可能是抑制恒星形成的主因。人马座C距离银河系中心的超大质量黑洞约 200 光年,是银河中心附近一个重要的恒星形成区域。这里拥有大量高密度的气体与尘埃,理论上应能有效孕育众多恒星,然而实际观测却显示,当地的恒星形成率远低于预期。透过韦伯太空望远镜的红外线观测,天文学家得以穿透稠密的尘埃,窥见银河中心附近的恒星诞生现场。韦伯的影像中,人马座C周围可见大量细长的丝状结构。这类结构过去曾由地面望远镜观测到,韦伯望远镜的资料则提供了更清晰的画面与有力的佐证。研究团队推测,这些丝状结构的形成与当地强磁场密切相关。银河系中央黑洞所产生的强大潮汐力使气体剧烈流动,进而拉伸并增强周围的磁场,而磁场则进一步形塑出这些丝状结构。
NASA Webb Explores Effect of Strong Magnetic Fields on Star Formation
天文館:銀河中心強磁場可能抑制恆星誕生

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Telegram Be The Next Best SPAC

I have no inside knowledge of a potential stock listing of the popular anti-Whatsapp messaging app, Telegram. But I know this much, judging by most people I talk to, especially crypto investors, if Telegram ever went public, people would gobble it up. I know I would. I’m waiting for it. So is Sergei Sergienko, who claims he owns $800,000 of Telegram’s pre-initial coin offering (ICO) tokens. “If Telegram does a SPAC IPO, there would be demand for this issue. It would probably outstrip the interest we saw during the ICO. Why? Because as of right now Telegram looks like a liberal application that can accept anyone - right after WhatsApp and others have turn on the censorship,” he says.

Can I mute a Telegram group?

In recent times, Telegram has gained a lot of popularity because of the controversy over WhatsApp’s new privacy policy. In January 2021, Telegram was the most downloaded app worldwide and crossed 500 million monthly active users. And with so many active users on the app, people might get messages in bulk from a group or a channel that can be a little irritating. So to get rid of the same, you can mute groups, chats, and channels on Telegram just like WhatsApp. You can mute notifications for one hour, eight hours, or two days, or you can disable notifications forever.

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