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Why do some galaxies ‘burst’

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9 years ago

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Washington: To help understand why some galaxies “burst” while others do not, an international team of astronomers have dissected a cluster of star-forming clouds at the heart of NGC 253, one of the nearest starburst galaxies to the Milky Way.

Starburst galaxies transmute gas into new stars at a dizzying pace – up to 1,000 times faster than typical spiral galaxies like the Milky Way.

“All stars form in dense clouds of dust and gas. Scientists, however, struggled to see exactly what was going on inside starburst galaxies that distinguished them from other star-forming region,” said Adam Leroy from the Ohio State University in Columbus.

They used the Atacama Large Millimeter/submillimeter Array (ALMA) in northern Chile that offers the power to resolve individual star-forming structures even in distant systems.
Leroy and his colleagues mapped the distributions and motions of multiple molecules in clouds at the core of NGC 253 – also known as the “Sculptor Galaxy”.

Sculptor, a disk-shape galaxy currently undergoing intense starburst, is located approximately 11.5 million light-years from Earth.

ALMA’s exceptional resolution allowed the researchers to first identify 10 distinct stellar nurseries inside the heart of “Sculptor”.

The team mapped the distribution of about 40 millimetre-wavelength “signatures” from different molecules inside the centre of the galaxy.

By comparing the concentration, distribution and motion of these molecules, the researchers were able to peel apart the star-forming clouds in Sculptor, revealing that they are much more massive, 10 times denser and far more turbulent than similar clouds in normal spiral galaxies.

“These differences have wide-ranging implications for how galaxies grow and evolve,” said Leroy who was formerly with the National Radio Astronomy Observatory (NRAO) in Charlottesville, Virginia.

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Business

Apple is giving a huge discount on its gadgets: Details inside

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2 years ago

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May 5, 2022

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If you want to buy an iPhone and were waiting for a nice offer, then we have a piece of good news for you! Amazon Summer Sale May 2022 has begun and they are offering major discounts on various smartphones, laptops, and smart TVs, among others.

The sale is live now on the e-commerce platform with no-cost EMI options and exchange discounts on various products. In addition to this, Amazon has also partnered with several banks including ICICI, Kotak Bank, and RBL so that customers get instant discounts of up to 10% using their cards and EMI transactions.

Customers can easily enjoy this summer sale and get massive discounts on iPhones. They can also compare prices on Flipkart Big Saving Days Sale 2022 before making a purchase.

 

Amazon Summer Sale May 2022: Discount offer on iPhone 13 

Apple’s coveted phone model iPhone 13 in the 128 GB storage model will be available during the Amazon Summer Sale May 2022 for Rs 64,900. The MRP of the phone is Rs 79,900. This means that the customers will be able to enjoy a discount of up to Rs 15,000 on the purchase of the iPhone 13.

If you have an old iPhone in working condition then you will also be eligible to receive another additional discount worth up to Rs 17,000 on the iPhone 13.

Buy at Rs. 64,900 (MRP – Rs. 79,900)

Features of Apple iPhone 13 

The iPhone is powered by an A15 Bionic processor with 6 core CPU. Apart from this, it has 16 core neural engines. With the iPhone 13, up to 512 GB of storage will be available. The iPhone 13 has a 6.1-inch Retina XDR display with 1000 nits brightness.

The iPhone 13 has a 12-megapixel dual rear camera setup. This time a new wide-angle camera has been given, whose aperture is f/1.6. With this, there is support for sensor optical stabilisation. Night mode has been made better than before. The second lens is also 12 megapixels ultra-wide and has an aperture of f/2.4.

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