{"id":31158,"date":"2018-03-12T10:20:52","date_gmt":"2018-03-12T14:20:52","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=31158"},"modified":"2018-03-12T10:20:52","modified_gmt":"2018-03-12T14:20:52","slug":"78-megahertz-australian-astronomers-detect-signal-from-the-dawn-of-the-universe","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2018\/03\/78-megahertz-australian-astronomers-detect-signal-from-the-dawn-of-the-universe\/","title":{"rendered":"78 Megahertz: Australian astronomers detect signal from the dawn of the universe"},"content":{"rendered":"
\"\"<\/a>

(Image: NASA – Hubble Space Telescope)<\/p><\/div>\n

(Source: ABC Science<\/a>\u00a0via William Lee)<\/p>\n

Astronomers detect signal from the dawn of the universe, using simple antenna in WA outback<\/strong><\/p>\n

They have picked up a radio signature produced just 180 million years after the Big Bang using a simple antenna in the West Australian outback.<\/p>\n

The ground breaking discovery, reported today in the journal Nature, sheds light on a period of time known as the “cosmic dawn”, when radiation from the first stars started to alter the primordial gas soup surrounding them.<\/p>\n

[…]The signal they’ve been looking for is a miniscule fraction \u2014 between 0.1 and 0.01 per cent \u2014 of the radio noise from the sky.<\/p>\n

“It’s like trying to hear a whisper from the other side of a roaring football stadium,” Professor Bowman said.<\/p>\n

The signal is also within the lower range of FM radio, so finding a place on Earth that is free of human radio interference was essential.<\/p>\n

That’s why Professor Bowman and colleagues decided to base their experiment at CSIRO’s Murchison Radio-astronomy Observatory, 300 kilometres north-east of Geraldton.<\/p>\n

“Going to Western Australia and working at the Murchison Radio-astronomy Observatory was an absolutely critical first step for us,” he said.<\/p>\n

There they built a small table-sized radio spectrometer with a radio receiver attached to two metal panels that act as an antenna. Akin to a set-up from the 60s or 70s, the EDGES instrument is much simpler in design than bigger array telescopes around the world.[…]<\/p>\n

Click here to read the full article at ABC Science.<\/a><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"

(Source: ABC Science\u00a0via William Lee) Astronomers detect signal from the dawn of the universe, using simple antenna in WA outback They have picked up a radio signature produced just 180 million years after the Big Bang using a simple antenna in the West Australian outback. The ground breaking discovery, reported today in the journal Nature, […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3781,3],"tags":[912,1584,581,6422],"class_list":["post-31158","post","type-post","status-publish","format-standard","hentry","category-fm","category-news","tag-abc-news","tag-fm","tag-radio-astronomy","tag-william-lee"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-86y","jetpack-related-posts":[{"id":29819,"url":"https:\/\/swling.com\/blog\/2017\/12\/4kz-celebrating-50-years-now-on-shortwave\/","url_meta":{"origin":31158,"position":0},"title":"4KZ celebrating 50 years, now on shortwave","author":"Thomas","date":"December 24, 2017","format":false,"excerpt":"(Source: Southgate ARC) Australian broadcaster celebrating on shortwave As part of 50th celebrations, radio broadcaster\u00a04KZ\u00a0in Northern Queensland is now on 5055 kHz and already getting signal reports including from North America and New Zealand. General Manager of NQ Radio (4KZ, 4AM, 4AY, KIK FM & KOOL FM), Al Kirton announced\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/04\/Innisfail-Queensland-Australia-4KZ.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/04\/Innisfail-Queensland-Australia-4KZ.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/04\/Innisfail-Queensland-Australia-4KZ.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":17491,"url":"https:\/\/swling.com\/blog\/2016\/02\/radio-astronomers-track-the-source-of-fast-radio-bursts\/","url_meta":{"origin":31158,"position":1},"title":"Radio astronomers track the source of fast radio bursts","author":"Thomas","date":"February 26, 2016","format":false,"excerpt":"(Source: BBC) For the first time, scientists have tracked the source of a \"fast radio burst\" - a fleeting explosion of radio waves which, in this case, came from a galaxy six billion light-years away. The cause of the big flash, only the seventeenth ever detected, remains a puzzle, but\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"PARI-East-26M-Antenna","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/10\/PARI-East-26M-Antenna-768x1024.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/10\/PARI-East-26M-Antenna-768x1024.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/10\/PARI-East-26M-Antenna-768x1024.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":23506,"url":"https:\/\/swling.com\/blog\/2017\/01\/ross-knows-firsthand-the-importance-of-abcradio-australia-shortwave\/","url_meta":{"origin":31158,"position":2},"title":"Ross knows firsthand the importance of ABC\/Radio Australia shortwave","author":"Thomas","date":"January 19, 2017","format":false,"excerpt":"Yesterday, we posted a\u00a0news item\u00a0regarding the importance of the ABC's shortwave service to those working and living in the Australian Outback.\u00a0It appears\u00a0the ABC has no intention of reversing the decision in any meaningful way. A follow-up piece from The Guardian: The ABC has remained steadfast in its decision to scrap\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Radio-Dial-2-1024x576.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Radio-Dial-2-1024x576.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Radio-Dial-2-1024x576.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":23479,"url":"https:\/\/swling.com\/blog\/2017\/01\/outback-workers-fight-closure-of-abcs-shortwave-service\/","url_meta":{"origin":31158,"position":3},"title":"Outback workers fight closure of ABC’s shortwave service","author":"Thomas","date":"January 18, 2017","format":false,"excerpt":"Many thanks to SWLing Post contributors Phil Brennan and London Shortwave for sharing the following story from The Guardian\u00a0(my comments follow): 'It's essential': outback workers fight ABC decision to ditch shortwave radio For some living and working in Australia\u2019s outback, shortwave radio is the only way they can listen to\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/NorthernTerritory-Australia.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/NorthernTerritory-Australia.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/NorthernTerritory-Australia.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/NorthernTerritory-Australia.jpg?resize=700%2C400 2x"},"classes":[]},{"id":53558,"url":"https:\/\/swling.com\/blog\/2022\/07\/radio-waves-fast-radio-bursts-czechia-drm-am-trial-kumartuli-radio-shop-and-ekho-moskvy-off-air\/","url_meta":{"origin":31158,"position":4},"title":"Radio Waves: Fast Radio Bursts, Czechia DRM AM Trial, Kumartuli Radio Shop, and Ekho Moskvy Off Air","author":"Thomas","date":"July 27, 2022","format":false,"excerpt":"Radio Waves:\u00a0 Stories Making Waves in the World of Radio Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a collection of links to interesting stories making waves in the world of radio.\u00a0Enjoy! 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