• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • CONTACT US
Friday, September 22, 2023
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • CONTACT US
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • CONTACT US
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News

Antarctic site promises to open a new window on the cosmos

Bioengineer by Bioengineer
December 12, 2016
in Science News
Reading Time: 2 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram
IMAGE

Credit: Xue-Fei Gong/Purple Mountain Observatory

Antarctica might be one of the most inhospitable regions on the planet, but it is a mecca for astronomers. Its cold, dry air enables observations that can't be done elsewhere on Earth. The South Pole has hosted telescopes for decades. Now, researchers are eyeing a new location – Dome A, which offers a unique opportunity to study the universe at little-explored terahertz radio frequencies.

"Dome A is the best site we've found – very flat, very calm winds, and the driest place anywhere on the planet," says Qizhou Zhang of the Harvard-Smithsonian Center for Astrophysics (CfA), co-author of a new study appearing online in the journal Nature Astronomy.

Dome A is the highest point in Antarctica, with an elevation of more than 13,000 feet (4,000 meters), comparable to Maunakea in Hawaii. Unlike the South Pole, it isn't visited by aircraft. Instead, researchers must trek inland from the Antarctic coast, a journey of some 750 miles (1,200 km) that takes up to three weeks to complete.

As a reward for these herculean efforts, scientists can access a type of light known as terahertz radiation, which has frequencies higher than 1 trillion hertz (1,000 times greater than the frequency used by cell phones). This radiation comes from cold clouds of interstellar gas and dust. By studying it, we can gain new insights into the origins of stars and galaxies.

Because water vapor in Earth's atmosphere absorbs this radiation, few places on Earth are suited for terahertz observations. Instead astronomers have relied on aircraft and space missions, which are more costly and less flexible.

The solution is to find an extremely dry location. Zhang and CfA co-author Scott Paine joined with their colleagues at China's Purple Mountain Observatory, led by principal investigator Sheng-Cai Shi, to create and deploy instruments to measure the conditions at Dome A over a span of 19 months. The data gathered there will also help inform climate models.

"The water vapor in the Earth's atmosphere that obscures our view of the cosmos also blocks infrared radiation escaping from the Earth's surface towards space, which is the essence of the greenhouse effect," says Paine, who studies atmospheric radiation.

The team found Dome A is frequently so arid that if all the water vapor in a narrow column stretching straight up from the ground to the edge of space were condensed, it would form a film less than 100 microns thick. That's about 1/250th of an inch, or twice the width of a human hair, and about 10 times less than that over Maunakea, one of the world's best astronomical observing sites.

Moreover, Dome A offers a natural laboratory for studying the effects of water vapor on atmospheric absorption at extremely low temperatures. The cold Antarctic atmosphere provides direct access to conditions normally found in the Earth's upper troposphere.

Developing Dome A into a permanent observatory for astronomy and atmospheric science will involve significant challenges. In return, researchers stand to gain a unique location for conducting scientific research.

###

Media Contact

Christine Pulliam
[email protected]
617-495-7463
@saoastro

http://cfa-www.harvard.edu

############

Story Source: Materials provided by Scienmag

Share12Tweet8Share2ShareShareShare2

Related Posts

What can be learnt from a highly informative X-ray occultation event in NGC 6814? A marvellous absorber

Scientists reveal marvellous x-ray mask absorber in the active galaxy NGC 6814

September 22, 2023
Fluoride permeation mechanism of the Fluc channel in liposomes revealed by solid-state NMR

Solid-state NMR unveils fluoride ion channel permeation mechanism

September 22, 2023

Clinical trial to test immune modulation strategy for hospitalized COVID-19 patients begins

September 22, 2023

UC San Diego Health named national leader in delivering high-quality patient care

September 22, 2023
Please login to join discussion

POPULAR NEWS

  • blank

    Microbe Computers

    58 shares
    Share 23 Tweet 15
  • University of South Florida scientist: Barnacles may help reveal location of lost Malaysia Airlines flight MH370

    46 shares
    Share 18 Tweet 12
  • Lithuanian invention at the forefront of solar technology breakthrough

    41 shares
    Share 16 Tweet 10
  • A pioneering study from Politecnico di Milano sheds light on one of the still poorly understood aspects of cancer

    34 shares
    Share 14 Tweet 9

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

Scientists reveal marvellous x-ray mask absorber in the active galaxy NGC 6814

Solid-state NMR unveils fluoride ion channel permeation mechanism

Clinical trial to test immune modulation strategy for hospitalized COVID-19 patients begins

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 57 other subscribers
  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In