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GMRT helps detect first merger in a nearby galaxy hosting Fast Radio Burst

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3 years ago

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GMRT helps detect first merger in a nearby galaxy hosting Fast Radio Burst

A group of astronomers from Pune has obtained the first ever evidence of a galaxy merger that hosted a Fast Radio Burst (FRB) using the Giant Metrewave Radio Telescope (GMRT).

FRBs are extremely bright radio pulses that flicker for less than a few milliseconds from all directions in the sky, making them extremely difficult to detect. Astronomers around the world are uncertain about the source of FRBs. To this end, gaseous material and stars from nearby galaxies with FRBs are currently being studied.

Nearly 1,000 FRBs have been discovered since their first discovery about 15 years ago. Some FRBs that appear from a distance can be single flashes or have a well-defined periodicity, called repeater FRBs.

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Researchers from TIFR – the National Center for Radio Astrophysics (NCRA), Pune and the University of California have selected a relatively nearby galaxy to house the FRB identified as FRB20180916B. It fires radio pulses every 16 days and is located on the outskirts of a galaxy about 5 billion light-years away. FRB20180916B was tracked by the Canadian Hydrogen Intensity Mapping Experiment (CHIME), which detected nearly 800 FRBs.

The researchers examined the 21-centimeter atomic hydrogen readout line acquired by the GMRT at 1420 MHz to map the distribution of gas in the FRB’s host galaxy.
While optical images of this galaxy didn’t reveal much interesting information, larger revelations came from subsequent radio imaging and mapping of the host galaxy’s atomic hydrogen gas.

Complete News Source : The India Express

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Nasa’s old map of Jupiter, which reminds many of dosa, has gone viral once more

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3 years ago

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May 25, 2022

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Nasa’s old map of Jupiter, which reminds many of dosa, has gone viral once more

Certain images or videos frequently resurface on the Internet, leaving people speechless. When those clips or pictures are shared again on one social media platform or another, they create a buzz. The National Aeronautics and Space Administration (Nasa) created and posted this image of a map of Jupiter online a few years ago. After being shared on Twitter, the image drew a lot of attention this time. And, as usual, the image made people think of dosa, a popular South Indian dish.

The image was shared by the Twitter account Latest in Space. “From the very bottom of Jupiter, I’m looking up. While tweeting the image, they wrote, “Seen by NASA Cassini.” The images from the Cassini spacecraft’s narrow-angle camera were used to create this out-of-this-world image, which is part of a coloured map series produced by the space agency.

The article was published a few days ago. The tweet has received nearly 20,000 likes since it was shared, and the number is growing. The tweet has been retweeted more than 2,000 times. Take a look at some of the comments to see how the image of Jupiter looks like dosa.

A Twitter user commented, “Looks like a designer dosa.” “When I rush to pick up a call, this is what happens to my dosa on the dosa pan,” one joked. “This is how my mother makes Dosa,” a third said. “Jupiter in the making,” wrote a fourth, along with a photo of someone preparing – you guessed it – dosa.

 

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