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NASA-funded rocket solves cosmic mystery

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nasaLogo-570x450Washington : A NASA-funded sounding rocket to study the origin of X-rays in the universe has helped scientists reveal a new mystery – an entire group of X-rays that don’t come from any known source.

Some of this invisible light that fills space takes the form of X-rays, the source of which has been hotly contended over the past few decades.

The DXL (Diffuse X-ray emission from the Local galaxy) sounding rocket was launched from White Sands Missile Range in New Mexico in 2012 to study the source of certain X-rays observed near Earth.

In a new study, DXL’s data confirms some of our ideas about where these X-rays come from, thus strengthening our understanding of our solar neighbourhood’s early history.

The two known sources of X-ray emission are the solar wind and the Local Hot Bubble – a theorised area of hot interstellar material that surrounds our solar system.

“We show that the X-ray contribution from the solar wind charge exchange is about 40 percent in the galactic plane, and even less elsewhere,” said Massimiliano Galeazzi, astrophysicist at University of Miami.

“So the rest of the X-rays must come from the Local Hot Bubble, proving that it exists,” he added.

However, DXL also measured some high-energy X-rays that could not possibly come from the solar wind or the Local Hot Bubble.

“At higher energies, these sources contribute less than a quarter of the X-ray emission,” noted Youaraj Uprety, lead author and astrophysicist at University of Miami at the time the research was conducted. “So there’s an unknown source of X-rays in this energy range.”

“We think that around 10 million years ago, a supernova exploded and ionized the gas of the Local Hot Bubble,” said Galeazzi.

But one supernova wouldn’t be enough to create such a large cavity and reach these temperatures – so it was probably two or three supernova over time, one inside the other.

“Identifying the X-ray contribution of the Local Hot Bubble is important for understanding the structure surrounding our solar system,” added Uprety who is now astrophysicist at Middle Tennessee State University.

It helps us build better models of the interstellar material in our solar neighbourhood, the authors noted in a paper published in the Astrophysical Journal.

Business

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

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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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