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
April 29,2020

Mumbai, Apr 29: Irrfan Khan, one of India's finest and most versatile actors, lost his battle with a rare form of cancer and died in a Mumbai hospital on Wednesday, a statement from his family said. He was 54

Irrfan, who was diagnosed with neuroendocrine tumour in 2018, is survived by his wife Sutapa and his sons Babil and Ayaan.

It is the second tragedy for the family in less than a week. The ?Maqbool? actor lost his mother, 95-year-old Saeeda Begum, in Jaipur just four days ago and could not attend the funeral because of the nationwide lockdown.

Irrfan, that rare actor who straddled multiple worlds, making his mark in both international and Indian cinema in roles intense and light-hearted, was admitted to the intensive care unit of the Kokilaben Dhirubhai Ambani Hospital with a colon infection

?It's saddening that this day, we have to bring forward the news of him passing away. Irrfan was a strong soul, someone who fought till the very end and always inspired everyone who came close to him. After having been struck by lightning in 2018 with the news of a rare cancer, he took life soon after as it came and he fought the many battles that came with it,? the statement from his family said

?Surrounded by his love, his family for whom he most cared about, he left for heavenly abode, leaving behind truly a legacy of his own. We all pray and hope that he is at peace. And to resonate and part with his words he had said, 'As if I was tasting life for the first time, the magical side of it',? it added.

The news of his death was first confirmed by his "Piku" director Shoojit Sircar who sent his condolences to the family and doffed his hat to the actor's fighting spirit

"My dear friend Irfaan. You fought and fought and fought. I will always be proud of you.. we shall meet again.. condolences to Sutapa and Babil.. you too fought, Sutapa you gave everything possible in this fight. Peace and Om shanti. Irfaan Khan salute," the director said on Twitter.

Irrfan's death came the morning after news that he had been admitted to the ICU with a colon infection.

The self-effacing National Award winner, who acted in films as diverse as ?Life of Pi?, ?The Namesake? and ?Haasil?, had stayed away from the public eye after his diagnosis in 2018 when he went to the UK for treatment.

He returned home in 2019 and shot for "Angrezi Medium", the sequel to his 2017 hit "Hindi Medium". However, his health condition prevented him from promoting the movie, which hit the theatres in March just before the lockdown that began on March 25.

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News Network
January 9,2020

New Delhi, Jan 9: JNU students who tried to march towards the Rashtrapati Bhavan on Thursday protesting the violence on the university campus were stopped by police and later detained.

The police also resorted to baton charge to control the mob who tried to block the traffic at Janpath. Using loudspeakers, the police also appealed to the crowd to maintain peace.

Before the students tried to proceed towards the Rashtrapati Bhavan, a delegation of JNU Students' Union and JNU Teachers' Association also met Human Resource Development (HRD) Ministry officials and demanded the removal of Vice-Chancellor M Jagadesh Kumar from his post.

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News Network
January 7,2020

Mumbai, Jan 7: Facing criticism from social media and political quarters for holding a 'Free Kashmir' poster during a protest against violence at Jawaharlal Nehru University (JNU), Mehak Prabhu, a Mumbai-based storyteller, on Tuesday clarified that she meant to highlight the restrictions imposed in Jammu and Kashmir and wishes to see peace in the region, adding she had no other motive behind her actions.

"At around 7 pm yesterday, I reached where the protest was happening at the Gateway of India. Like anybody else who believes in democracy, I also joined that protest. We were standing for justice to the JNU students," Prabhu said in a video posted on Facebook.

"I saw a bunch of people who were painting placards on every issue like NRC, CAA and for JNU students. There was a placard lying on the side which said 'Free Kashmir'. The first thing which came to my mind when I saw that placard was about the basic constitutional rights of Kashmiris," she said.

Prabhu also said that she was not a Kashmiri and was brought up in Mumbai. She outlined that she was standing with a flower in her hand and asserted that the entire matter was "completely blown out of proportion".

"I was quietly standing with a flower in my hand. This means we need to make peace together. That was my only intention in holding that placard. The narrative that has been put out is absolutely wrong," she said, describing the reactions to the matter was "crazy".

The Mumbai-based storyteller underlined that the incident is scary and urged the people to spread the words of what she said and not hatred.

"The way it has gone, it is very scary. I am a simple person. As a woman, it is very scary for my safety right now. Spread this side of my story and let's stop it here. Let us not spread the hate. It has happened to me, it can happen to anyone. We should not live in fear," Prabhu further said.

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