Tín hiệu ngoài hành tinh liên tục dội xuống Trái Đất mỗi giây

Tín hiệu ngoài hành tinh liên tục dội xuống Trái Đất mỗi giây


Các chớp sóng vô tuyến tiếp tục trở thành đề tài gây tranh cãi cho các nhà khoa học, với những câu hỏi xoay quanh nguồn gốc của chúng.

Tín hiệu ngoài hành tinh liên tục dội xuống Trái Đất mỗi giây
Một giả thuyết cho rằng sao từ với từ trường cực mạnh là nguồn phát FRB. (Ảnh: NASA.)

Từ khi được phát hiện lần đầu tiên năm 2001, chớp sóng vô tuyến (FRB) đã thu hút sự chú ý của giới nghiên cứu. Các nhà thiên văn tìm thấy thêm hàng chục tín hiệu FRB trong vài năm qua và thậm chí đưa ra nhiều suy đoán về nơi chúng bắt nguồn. Tuy nhiên, nguyên nhân gây ra những tín hiệu này vẫn là điều bí ẩn. Một nhóm nhà khoa học ước tính các chớp sóng bắn ra mỗi giây xuyên khắp vũ trụ, theo International Business Times.


Phần lớn nguồn phát FRB chỉ được phát hiện một lần do các chớp sóng mạnh kéo dài vài mili giây. Một chớp sóng đặc biệt ký hiệu FRB 121102 đã nháy thêm 34 lần từ khi được ghi nhận lần đầu tiên năm 2002. Nhờ đó, các nhà thiên văn có thể xác định vị trí của chớp sóng vô tuyến đến từ một thiên hà ở cách chúng ta ba tỷ năm ánh sáng.

Trong nghiên cứu công bố hôm qua trên tạp chí Astrophysical Journal Letters, hai nhà thiên văn học ở Trung tâm vật lý thiên văn Harvard-Smithsonia (CfA) ước tính FRB phát ra ở tốc độ khá nhanh. “Nếu chúng tôi đúng về tốc độ nhanh của FRB, bạn có thể tưởng tượng bầu trời tràn ngập chớp sáng giống như thợ săn ảnh tranh thủ chụp hình người nổi tiếng. Thay vì ánh sáng chúng ta có thể nhìn thấy bằng mắt thường, những chớp sáng này xuất hiện dưới dạng sóng vô tuyến”, said Anastasia Fialkov ở CfA, người đứng đầu nhóm nghiên cứu, cho biết.

Nghiên cứu của nhóm Fialkov chỉ ra FRB không hiếm gặp như suy đoán trước đây. “Trong thời gian bạn uống một tách cà phê, hàng trăm tín hiệu FRB đã phát ra từ nơi nào đó trong vũ trụ”, Avi Loeb, đồng tác giả nghiên cứu nói. “Nếu có thể tìm hiểu một phần nhỏ trong số đó, chúng ta sẽ có thể khám phá nguồn gốc của chúng”.

“FRB giống như những chớp sáng cực mạnh có thể quan sát qua khoảng cách lớn. Nó cho phép chúng tôi nghiên cứu thuở bình minh của vũ trụ theo cách mới”, Fialkov nói.


Bình luận

Email của bạn sẽ không được hiển thị công khai.

  1. Pretty section of content. I just stumbled upon your website and in accession capital to assert that I get in fact enjoyed account your blog posts. Any way I?ll be subscribing to your feeds and even I achievement you access consistently rapidly.

    http://www.cplusplus.com/user/wylewki/

  2. I don?t even know how I ended up here, but I thought this post was great. I don’t know who you are but definitely you are going to a famous blogger if you are not already 😉 Cheers!

    http://sdcenter.pl/czym-kierowac-sie-przy-wyborze-gniazd-i-wlacznikow-w-domu/

  3. The next time I learn a blog, I hope that it doesnt disappoint me as a lot as this one. I imply, I do know it was my choice to learn, however I actually thought youd have one thing fascinating to say. All I hear is a bunch of whining about one thing that you could possibly fix for those who werent too busy on the lookout for attention.

    http://arthuruhub58123.look4blog.com/35059957/boston-to-dc-long-distance-relocating-obstacles

  4. Aw, this was a very nice post. In thought I wish to put in writing like this moreover – taking time and actual effort to make an excellent article… however what can I say… I procrastinate alot and by no means seem to get something done.

    http://avhosting.us/nowshoplocal/members/canlumber2/activity/284114/

  5. Does your site have a contact page? I’m having a tough time locating it but, I’d like to send you an email. I’ve got some creative ideas for your blog you might be interested in hearing. Either way, great website and I look forward to seeing it improve over time.

    https://www.dezeen.com/2014/08/06/naomi-kizhner-energy-addicts-jewellery-human-electricity-production/

  6. Hey I am so glad I found your web site, I really found you by accident, while I was searching on Bing for something else, Anyways I am here now and would just like to say many thanks for a marvelous post and a all round enjoyable blog (I also love the theme/design), I don’t have time to read through it all at the moment but I have bookmarked it and also included your RSS feeds, so when I have time I will be back to read more, Please do keep up the superb work.

    http://www.zortilonrel.com/

  7. I love your blog.. very nice colors & theme. Did you design this website yourself or did you hire someone to do it for you? Plz reply as I’m looking to create my own blog and would like to find out where u got this from. thanks

    http://www.doggychef.co.za/

  8. Hi, just required you to know I he added your site to my Google bookmarks due to your layout. But seriously, I believe your internet site has 1 in the freshest theme I??ve came across. It extremely helps make reading your blog significantly easier.

    https://www.lesedi-ict.co.za/it-company-port-elizabeth/

  9. Great goods from you, man. I have understand your stuff previous to and you are just too great. I actually like what you have acquired here, really like what you’re stating and the way in which you say it. You make it entertaining and you still take care of to keep it wise. I can not wait to read much more from you. This is actually a terrific web site.

    https://bestforthekids.com

  10. Quality posts is the main to interest the viewers to pay a quick visit the website, that’swhat this site is providing.

    http://www.X7wFVYZgcs.com/X7wFVYZgcs

  11. I’ll right away grab your rss feed as I can’t in finding your email subscription link or e-newsletter service. Do you’ve any? Please let me realize in order that I may just subscribe. Thanks.

    https://indyinjured.com

  12. This web site is really a walk-through for all of the info you wanted about this and didn’t know who to ask. Glimpse here, and you’ll definitely discover it.

    https://pacacervera.es

  13. Great write-up, I am normal visitor of one’s web site, maintain up the nice operate, and It’s going to be a regular visitor for a lengthy time.

    https://betop-lab.com

  14. A lot of of what you claim is supprisingly precise and that makes me wonder the reason why I hadn’t looked at this in this light previously. This particular article really did turn the light on for me as far as this specific issue goes. Nevertheless at this time there is 1 position I am not really too cozy with and whilst I make an effort to reconcile that with the actual core idea of your issue, let me see exactly what the rest of your subscribers have to say.Very well done.

    https://gphgrading.com/services/excavating/

  15. Some genuinely fantastic blog posts on this website, thank you for contribution. “We are always in search of the redeeming formula, the crystallizing thought.” by Etty Hillesum.

    http://alexanderkrzyston.wordpress.com/

  16. I want to convey my affection for your generosity in support of folks that have the need for guidance on this one area. Your very own dedication to getting the solution all over had become certainly insightful and have without exception helped associates like me to achieve their ambitions. Your amazing useful instruction entails this much a person like me and extremely more to my mates. Thanks a ton; from each one of us.

    https://www.navthemes.com/plugins-you-need-when-starting-blog/

  17. Hi there are using WordPress for your site platform? I’m new to the blog world but I’m trying to get started and set up my own. Do you require any coding expertise to make your own blog? Any help would be really appreciated!

    https://alarmas.plus/alarmas/tyco/

  18. I’m truly enjoying the design and layout of your blog. It’s a very easy on the eyes which makes it much more enjoyable for me to come here and visit more often. Did you hire out a designer to create your theme? Exceptional work!

    http://111.90.150.87/

  19. Keep functioning ,great job!

    https://www.scantegritydocumentservices.com/2020/01/24/why-to-buy-ielts-certificate-without-exam/

  20. naturally like your web-site but you have to test the spelling on several of your posts. Many of them are rife with spelling issues and I to find it very bothersome to inform the truth nevertheless I will definitely come again again.

    https://onlinestoreforu.co/buy-cialis-online-for-better-and-safe-treatment-of-erectile-dysfunction/

  21. There is noticeably a bundle to learn about this. I assume you made certain nice points in options also.

    https://www.replicagucci.co

  22. I went over this site and I think you have a lot of great information, bookmarked (:.

    https://kenboa.org/spiritual-formation/who-does-god-say-i-am

  23. Hello.This post was really interesting, especially since Iwas browsing for thoughts on this subject last couple of days.

    http://www.dlllejkk.edu

  24. F*ckin¦ remarkable things here. I¦m very glad to peer your post. Thanks so much and i’m having a look ahead to contact you. Will you please drop me a mail?

    http://www.froleprotrem.com/