Astronomers discover 83 supermassive black holes 13 billion light-years away

Agencies
March 15, 2019

Washington, Mar 15: Astronomers have discovered 83 quasars powered by supermassive black holes 13 billion light-years away from the Earth, from a time when the universe was less than 10 per cent of its present age.

“It is remarkable that such massive dense objects were able to form so soon after the Big Bang,” said Michael Strauss, a professor at Princeton University in the US.

“Understanding how black holes can form in the early universe, and just how common they are, is a challenge for our cosmological models,” Strauss said in a statement.

This finding, published in The Astrophysical Journal, increases the number of black holes known at that epoch  considerably, and reveals, for the first time, how common they are early in the universe’s history.

In addition, it provides new insight into the effect of black holes on the physical state of gas in the early universe in its first billion years.

Supermassive black holes, found at the centers of galaxies, can be millions or even billions of times more massive than the Sun.

While they are prevalent today, it is unclear when they first formed, and how many existed in the distant early universe.

A supermassive black hole becomes visible when gas accretes onto it, causing it to shine as a “quasar.” Previous studies have been sensitive only to the very rare, most luminous quasars, and thus the most massive black holes.

The new discoveries probe the population of fainter quasars, powered by black holes with masses comparable to most black holes seen in the present-day universe.

The team used data taken with “Hyper Suprime-Cam” (HSC) instrument, mounted on the Subaru Telescope of the National Astronomical Observatory of Japan, which is located on the summit of Maunakea in Hawaii.

The researchers selected distant quasar candidates from the sensitive HSC survey data.

They then carried out an intensive observational campaign to obtain spectra of those candidates, using three telescopes: the Subaru Telescope; the Gran Telescopio Canarias on the island of La Palma in the Canaries, Spain; and the Gemini South Telescope in Chile.

The survey revealed 83 previously unknown very distant quasars.

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ABDUL AZIZ SHE…
 - 
Saturday, 16 Mar 2019

SUBHAANALLAH

 

 
ALLAH ALMIGHTY CREATED EVERTHING  INCLUDING WHOLE UNIVERSE AND WHAT IS IN IT,

HUMAN BEING CANNOT REACH TO UNDERSTAND IT,  HUMAN LIFE NOT SUFFEICENT TO REACH AND KNOW EVERYTHING.

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News Network
June 1,2020

Mumbai, Jun 1: Singer-composer Wajid Khan of music director duo Sajid-Wajid, popular for their work on superstar Salman Khan's films such as "Wanted", "Dabangg" and "Ek Tha Tiger", died in early hours of Monday in a city hospital due to complications arising from a kidney infection. He was 42.

Music composer Salim Merchant, who confirmed the news of Wajid's death, said the composer was hospitalised few days ago at Surana Hospital, Chembur where his condition deteriorated.

"He had multiple issues. He had a kidney issue and had a transplant a while ago. But recently he got to know about kidney infection... He was on the ventilator for the last four days, after his situation started getting worse. Kidney infection was the beginning and then he got critical," Salim told PTI.

The music composer duo made their Bollywood debut with Salman's 1998 movie "Pyaar Kiya Toh Darna Kya" and went on to work on actor's various films including "Garv", "Tere Naam", "Tumko Na Bhool Payenge", "Partner" and the popular "Dabangg" franchise.

Wajid also did playback for Salman in chartbusters like "Mera He Jalwa", "Fevicol Se" and for Akshay Kumar in "Chinta Ta Chita Chita" from the film "Rowdy Rathore", among others. He recently co-composed Salman's songs "Pyaar Karona" and "Bhai Bhai", which the actor released on his YouTube channel.

Wajid along with his brother Sajid served as mentor on singing reality shows "Sa Re Ga Ma Pa 2012" and "Sa Re Ga Ma Pa Singing Superstar".

The composer duo also scored IPL 4 theme song, "Dhoom Dhoom Dhoom Dhadaka", which was sung by Wajid.

Soon after the news of the composer's demise broke, many from the film fraternity took to Twitter to pay tributes.

Actor Priyanka Chopra said she will always remember Wajid's smile.

"The one thing I will always remember is Wajid bhai's laugh. Always smiling. Gone too soon. My condolences to his family and everyone grieving. Rest in peace my friend. You are in my thoughts and prayers," she posted on Twitter.

Actor Parineeti Chopra said Wajid was one of the "nicest" men in the industry.

"Always singing. All heart. Always positive. You will truly be missed Wajid bhai," she tweeted.

Actor Varun Dhawan shared a picture of his filmmaker-father David Dhawan with Wajid and remembered the musician as one of the most positive people in Bollywood.

"Shocked hearing this news @wajidkhan7 bhai was extremely close to me and my family. He was one of the most positive people to be around. We will miss you Wajid bhai thank you for the music," he wrote.

Music composer-singer Vishal Dadlani said he was "heartbroken" after hearing the news.

"Both @SajidMusicKhan and @wajidkhan7 have been close & true friends. The kind who might see the light on and show up at our studio in the middle of the night just to meet and talk and share a laugh. Can't believe Wajid and I will never speak again," he wrote.

Singer-composer Shankar Mahadevan said he was still unable to come to terms with the news of Wajid's demise.

"Shocking ! Good bye dear brother.. love you .. till we meet on the other side ! Prayers for your peaceful journey Wajid bhai," he tweeted.

Singer Javed Ali posted, "Feeling Deeply Saddened after hearing shocking news of the sudden demise of Wajid Khan. May his Soul Rest in Peace. My heartfelt condolences to his family. May Allah give strength to the family."

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News Network
February 29,2020

New Delhi, Feb 29: Amid the raging communal violence in the entire north-east Delhi earlier this week, there were people who were trying to save persons and families from the "other community" from the fury of the mobs of their own community.

Naeem Ali Pradhan, 34, from Shiv Vihar, helped at least 7-8 Hindus on the night of February 24 -- when the violence was at its peak-- escape to safer locations. Shiv Vihar is one of the worst affected areas in the violence.

According to Naeem Ali, that night mobs attacked dozens of shops on the road and later tried to enter inside the residential areas.

Suddenly, he spotted a group of youth who were looking hassled and frantically asking for directions.

"I saw them. Thye were Hindus who were trying to escape a mob looking to target them. They had lost their way inside the streets of our colony. I along with other Muslim men escorted them to the nearby Hindu locality," Naeem, who is also a member of the Aman Committee constituted by the Delhi police, told ANI.

"Several shops which were on the roads including some showrooms were attacked by a group. These Hindus were worried as a mob which was on the main road was attacking people. They asked me the address of a colony as they were unable to find their way," Naeem said.

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News Network
July 2,2020

Geneva, Jul 2: The World Health Organization (WHO) has estimated the overall number of coronavirus cases globally at 10,357,662, with 508,055 people having died from the disease.

The UN health agency said in the situation report published on late Wednesday that 163,939 new cases had been recorded in the past day, while further 4,188 patients had died.

Americas continue to lead the count with over 5.2 million cases, followed by Europe with more than 2.7 million.

The WHO declared the COVID-19 outbreak a pandemic on March 11.

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