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A new scientific research reveals the temperature of ‘Super Earth’

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Image source: www.businessinsider.my

London: Using data from NASA’s Spitzer Space Telescope, an international team of astronomers that also includes an Indian-origin scientist has for the first time obtained the most detailed “fingerprint” of a super-Earth planet — a rocky planet nearly two times as big as ours.

The efforts led to the first temperature map that reveals extreme temperature swings from one side of the “55 Cancri e” planet to the other and hints that a possible reason for this is the presence of lava flows.

“We have entered a new era of atmospheric remote sensing of rocky exoplanets,” said study co-author Nikku Madhusudhan from the institute of astronomy at the University of Cambridge.

“It is incredible that we are now able to measure the large scale temperature distribution on the surface of a rocky exoplanet,” he added.

According to the team led by Cambridge, conditions on the hot side of the planet are so extreme that it may have caused the atmosphere to evaporate, with the result that conditions on the two sides of the planet vary widely.

Temperatures on the hot side can reach 2500 degrees Celsius while temperatures on the cool side are around 1100 degree Celsius.

“55 Cancri e” orbits a sun-like star located 40 light years away in the Cancer constellation.

It is a ‘super Earth’ – a rocky exoplanet about twice the size and eight times the mass of Earth and orbits its parent star so closely that a year lasts just 18 hours.

The planet is also tidally locked, meaning that it always shows the same face to its parent star, similar to the Moon, so there is a permanent “day” side and a “night” side.

Since it is among the nearest super Earths whose composition can be studied, 55 Cancri e is among the best candidates for detailed observations of surface and atmospheric conditions on rocky exoplanets.

“We haven’t yet found any other planet that is this small and orbits so close to its parent star, and is relatively close to us, so 55 Cancri e offers lots of possibilities,” added Dr Brice-Olivier Demory from Cambridge and the paper’s lead author.

“We still don’t know exactly what this planet is made of – it’s still a riddle. These results are like adding another brick to the wall, but the exact nature of this planet is still not completely understood,” he added in the paper appeared in the journal Nature.

According to Demory, one possibility for this variation could be either a complete lack of atmosphere, or one which has been partially destroyed due to the strong irradiation from the nearby host star.

Another possibility for the huge discrepancy between the day side and the night side may be that the molten lava on the day side moves heat along the surface, but since lava is mostly solid on the night side, heat is not moved around as efficiently.

What is unclear however, is where exactly the ‘extra’ heat on 55 Cancri e comes from in the first place.

The researchers may have to wait until the next generation of space telescopes are launched to find out.

In 2018, the successor to Hubble and Spitzer – the James Webb Space Telescope – will launch, allowing astronomers to look at planets outside our solar system with entirely new levels of precision.

Credits: Agencies

  • Akanksha Sharma

    These planets are termed as Super planets because their mass is twice as large as earth’s mass but the term does not imply that the temperature or any other living condition is similar to that of earths’.

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HP Considering India as a Key Focus Area

India is key focus area, 3D printers next big thing

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HP India
HP unveils 65-inch gaming display with soundbar at CES 2019. Flickr

India is a very attractive market with high brand recognition for a computer hardware producer like HP, said HP Inc’s President for Asia Pacific and Japan, Tian Chong Ng.

The Asia Pacific region — in which India is a key focus area — has been the fastest growing for HP and provided 16 per cent revenue growth last year.

In Q1 of FY2019 it registered 8 per cent growth year-on-year, said Ng in the course of the HP Reinvent 2019 conference, the company’s largest global partner event.

One reason for that is — India – and also the Asia Pacific region — tick marks on demographics trends which provide clear wins for HP: rapid urbanisation and more millennials are joining the work force.

While HP is very positive on India and recognises its potential, there are no plans yet for setting up a manufacturing base in India. Ng said it already has a manufacturing base in China apart from others in Vietnam, Thailand and Japan.

HP
HP. (IANS)

“There is an existing ecosystem in China and we don’t have plans for setting up a manufacturing base in India, he said.

One focus area is the 3D printer, which offers HP great opportunity. Construction and automotive sectors are the focus areas here. Meanwhile, an MoU has been signed with the Andhra Pradesh government.

“To be successful in India demands that we understand it,” he said.

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HP is also pushing gaming in a big way. However, this has not led to any thinking for manufacturing mobile phones in India, despite the high number of gamers in the country spurred by affordable android phones and cheap data.

“Our strength is the PC business and we offer a whole family of products in that space,” Ng said. (IANS)