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
January 30,2020

New Delhi, Jan 30: Tension spiralled in Jamia Nagar on Thursday after a man fired a pistol at a group of anti-CAA protesters, injuring a Jamia Millia Islamia student before walking away while waving the firearm above his head and shouting "Yeh lo aazadi" amid heavy police presence in the area.

Massive protests erupted in the area after the incident with hundreds of agitated people gathering near the university, breaking barricades and clashing with police personnel.

The man, who identified himself as "Rambhakt Gopal", was subsequently overpowered by police and detained. He was taken into custody and was being interrogated, police said.

The entire drama, which triggered panic in the area, was captured by television cameras that showed the man in light coloured pants and a dark jacket, walking away on an empty road barricaded by police, turning around and shouting at the protesters in Hindi, "Here, take this freedom."

The gunman went live on Facebook before the brandishing the gun. Police said they were verifying whether it is his real name.

Before the attack, the man also put out messages on Facebook stating "Shaheen Bhag Khel Khatam" (Run Shaheen, the game is over). Another message stated, "Please wrap me in saffron in my last journey with slogans of Jai Shri Ram". His Facebook profile was deleted after screenshots of his posts were circulated widely on social media platforms.

Several students recapped how their peaceful march on Gandhi's death anniversary became violent.

"We were moving towards the Holy Family Hospital where the police had raised barricades. Suddenly, a gun-wielding man came out and opened fire. One bullet hit my friend's hand," Aamna Asif, a student of economics at the university, told PTI.

She said her friend, Shadab Farooq, a mass communication student, was trying to calm the attacker but he shot at him injuring his left hand.

Farooq, who belongs to Kashmir, was taken to the AIIMS Trauma Centre.

Ragibh Naushad, an LLB student at the university, said, "The Jamia Coordination Committee organised a march to pay homage to Gandhi ji on his death anniversary. It started at 12 noon from Gate number 7, but police denied the permission and stopped the march near the Holy Family hospital.

"A man named Gopal, came there and started brandishing a weapon and later shot a round. He was also chanting pro-CAA slogans."

The incident led to panic in the area.

Khalid Hassan, a JMI alumnus, said initially many were not sure whether it was a gunshot or a tyre burst.

There was heavy police and media presence when the incident took place.

The students were heading from Jamia to Mahatma Gandhi's memorial Rajghat. The march was stopped at the Holy Family Hospital near the university.

Chinmoy Biswal, DCP (southeast), said the students wanted to take out a march from Jamia to Rajghat but were denied permission.

"They were being repeatedly told that the protest should be carried out peacefully. We had barricaded the road just before the Holy Family hospital. Meanwhile, a person was seen in the crowd who waved something which appeared to be a weapon."

"We have detained him and are interrogating him. One person has also been injured," Biswal said.

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News Network
February 2,2020

Lucknow, Feb 2: In an early morning firing at Lucknow's Hazratganj, the city centre, Vishva Hindu Mahasabha state president Ranjit Bachchan was killed while he was out on a morning walk on Sunday.

Ranjit Bachchan was taking a stroll in Hazratganj in the morning when bike-borne assailants opened fire on him and killed him on the spot. The Mahasabha leader was shot in the head multiple times.

The incident took place near the CDRI building in Lucknow's Hazratganj.

In the firing, Ranjit Bachchan's brother also suffered bullet injuries. He has been rushed to the trauma centre. Ranjit Bachchan was a resident of Gorakhpur.

The early morning shootout in the Uttar Pradesh capital's central area has caused tension in the area.

Dinesh Singh, DCP Central Lucknow, said, "The body has been identified as of Ranjit Bachchan, who had gone out on morning walk when some unknown assailant shot him. A police team has been formed and further investigation is being carried out."

Before being associated with the Mahasabha, Ranjit Bachchan was a Samajwadi Party member and was often spotted with former UP chief minister Akhilesh Yadav.

The Samajwadi Party has hit out at the Yogi Adityanath government over the law and order situation in the state and demanded immediate resignation of the government.

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News Network
February 18,2020

New Delhi, Feb 18: A Delhi court today sent Sharjeel Imam, who has been named as an "instigator" by the Delhi Police in its chargesheet on violent protests against the amended citizenship act at New Friends Colony near Jamia in Delhi last year, to judicial custody till March 3.

Sharjeel Imam was arrested on sedition charges last month.

The Delhi Police has filed a chargesheet before Chief Metropolitan Magistrate Gurmohina Kaur, naming Sharjeel Imam as an instigator of the violence.

It said it has attached CCTV footage, call detail records and statements of over 100 witnesses as evidence in the chargesheet.

The court had on Monday sent Sharjeel Imam to one-day custody of Delhi Police in the case.

Protestors had torched four public buses and two police vehicles as they clashed with police in New Friends Colony near Jamia Millia Islamia in Delhi during the demonstration against the CAA on December 15, leaving nearly 60 people including students, cops and fire fighters injured.

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