Search DubaiPRNetwork.com

Home >> Government, Legal & Humanity

Astrophysicists Measure Precise Rotation Pattern of Sun-like Stars for the First Time

Astrophysicists Measure Precise Rotation Pattern of Sun-like Stars for the First Time

Saturday, September 22, 2018/ Editor -  

Share

Home >> Government, Legal & Humanity
Equators of Sun-like stars rotate up to two and a half times as fast as higher latitudes, NYU Abu Dhabi researchers have discovered
 
Fast Facts
  • Scientists measure differential rotation on Sun-like stars for the first time
  • Sun-like stars rotate up to two and a half times faster at the equator than at mid- to high-latitudes, a finding that challenges current science on how stars rotate
  • Studying how stars spin can provide insights into how stars, including the sun, generate magnetic activity
Abu Dhabi, September 22, 2018:   Sun-like stars rotate up to two and a half times faster at the equator than at higher latitudes, a finding by researchers at NYU Abu Dhabi that challenges current science on how stars rotate.
 
Until now, little was known about the precise rotational patterns of Sun-like stars, only that the equator spins faster than at higher latitudes, similar to the Sun.
 
Scientists at the NYU Abu Dhabi Center for Space Science used observations from NASA’s Kepler mission and asteroseismology — the study of sound waves traveling inside stars — to determine with precision how Sun-like stars rotate, which no other scientific method has been able to achieve.
 
Their study found that Sun-like stars, characterized as being like the Sun in mass and age, do indeed rotate in a similar manner as the Sun in that their equatorial regions rotate more rapidly than at mid- to high latitudes. But there’s a key difference.
 
The equator of the Sun rotates about 10 percent faster than its mid latitudes, while equators of Sun-like stars spin up to two and a half times faster than their mid latitudes.
 
“This is very unexpected, and challenges current numerical simulations, which suggest that stars like these should not be able to sustain differential rotation of this magnitude,” said Othman Benomar, research associate at the NYU Abu Dhabi Center for Space Science and lead author of the study published in Science Magazine.
 
“Understanding differential rotation — how fast one part of a star spins compared to the rest — is not only important for a complete understanding of how a star works, it will help us gain deeper insights about their magnetic fields,” explained Katepalli Sreenivasan, principal investigator of the NYU Abu Dhabi Center for Space Science.
 
Magnetic fields on the Sun have been known to cause enormous solar storms that frequently disrupt orbiting space satellites and have knocked out power grids on Earth.
 
Scientists agree that the rotation of the Sun plays a crucial role in the generation of the solar magnetic field, but the exact details still remain a mystery, despite the Sun having been observed and studied in great detail.
 
Sreenivasan added, “learning more about how stars rotate and generate their own magnetic fields could help us gain further insight into the solar dynamo, the physical process that generates the Sun’s magnetic field.”
 
The NYUAD Center for Space Science is supported by the NYUAD Research Institute, which promotes cutting-edge and innovative research through the support of its 12 centers, labs, and projects.
 
Additional facts
 
Asteroseismology
Allows scientists to determine precisely how a star rotates by measuring frequencies of acoustic waves inside the star. Helioseismology is used on the Sun for the same purpose.
 
Differential rotation
Rotation speeds on the Sun and stars vary at different latitudes because they are fluid (the middle spins faster than the poles). By contrast, a spinning basketball has rigid rotation — it spins at the same speed from top to bottom.

Previous in Government, Legal & Humanity

Next in Government, Legal & Humanity


Home >> Government, Legal & Humanity Section

Latest Press Release

Jaguar to Make History With All-Electric Race Series

CBUAE and Central Bank of China meet to Enhance Renminbi Clearing in the UAE

Dubai being crowned as the ‘Champion City' for District Cooling Solutions: Inter ...

Chic and Stylish Wraps with a 3 in 1 effortless concept

Holiday Gifting Made Easy with Wet n Wild Beauty Specials

Discover a magical Festive Season at Dubai Parks and Resorts

Etisalat further doubles speeds on eLife plans for free

Nine winners honored by DQG for their innovative ideas at the 10th Global Contin ...

IFAW participates in special initiative with the Al Ain municipality marking the ...

Young Emirati Champion Rashid Al Dhaheri Powers Ahead to Stunning Victory at the ...

Todd English Food Hall announces Dubai debut of its New York-born concept

Samsung Galaxy A9 – Designed to capture the world in its fullest

ADNOC Schools Honors its Kumon Program High-Achievers

Tissot PR100 Lady Sport – Chic Glamourous Festive Season

Immigration Amnesty Extended Further

Jury Announced for Epson's First Ever Win-A-Robot Competition in Europe, The Mid ...

Dubai South unveils the Aviation One office complex

DLD announces 3rd Gulf Real Estate Awards 2019

Air India Express launches its new route to Kannur from Abu Dhabi International ...

du & Sharjah University Piece Together Larger Than Life Guinness World Record Mo ...