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
March 6,2020

Mumbai, Mar 6: Harried Yes Bank depositors rushed to ATMs to withdraw cash but faced multitude of problems including closed down machines and long queues, after the RBI placed the bank under a moratorium, capping maximum withdrawals at Rs 50,000 per account for a month.

Aggravating the problems of depositors were difficulties accessing the internet banking channel, which ensured that they can't transfer the funds online as well. At an ATM in south Mumbai's Horniman Circle, with the RBI headquarters overlooking it, the shutters were pulled down.

The guard on duty said the machine was non-operational before he reported to work late in the evening and he was ordered to shut it after 2200 hrs. In the residential area of suburban Chembur, one ATM was dispensing cash but had a long queue of anxious depositors.

One man said it was still possible to withdraw up to Rs 50,000 in multiple transactions from the machine.

However, another machine nearby had run dry within minutes of the RBI announcement, a woman said.

The regulatory actions, undertaken by the RBI and the government, came hours after finance ministry sources confirmed that SBI was directed to bail out the troubled lender.

For the next month, Yes Bank will be led by the RBI-appointed administrator Prashant Kumar, an ex-chief financial officer of SBI.

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Agencies
February 25,2020

New Delhi, Feb 25: Union Home Minister Amit Shah on Monday told a meeting of Delhi Lieutenant Governor Anil Baijal, Chief Minister Arvind Kejriwal and party leaders that "professional assessment" is that the violence in north-east Delhi has been "spontaneous".

He also said adequate forces have been already deployed in affected areas even as he urged political parties to avoid provocative speeches and statements which could flare up the situation and desist from rumour-mongering. He also instructed Delhi Police Commissioner Amulya Patnaik to re-activate local peace committees. 

"Shah noted that the professional assessment is that the violence in the capital has been spontaneous. He expressed confidence in Delhi Police and said that the force has shown maximum restraint to get the situation under control," a statement issued by the Ministry of Home Affairs (MHA) said.

However, on Monday, government sources had claimed that violence in the national capital "appeared to be orchestrated" to coincide with the high-profile visit. A PTI report from Hyderabad on Tuesday also quoted Minister of State for Home G Kishan Reddy as saying that the violence in Delhi has been perpetrated intentionally and the Narendra Modi government would not tolerate such incidents. 

While Shah said adequate forces have been deployed, there were also reports that the Delhi Police Commissioner told MHA top brass that it did not have adequate forces to control the violence that erupted in north-east Delhi. However, Delhi Police later tweeted that the Commissioner has denied that "no such information was given to MHA" and such reports were "totally baseless". 

Urging parties to avoid provocative speeches and statements which could flare up the situation, the statement said, Shah expressed confidence in Delhi Police and said that the force has shown maximum restraint to get the situation under control.

Appealing to all to maintain restraint and desist from rumour-mongering while instructing the Delhi Police Commissioner to re-activate local peace committees, Shah said Delhi's borders with Uttar Pradesh and Haryana have been under surveillance for the last three days. 

Shah also urged parties to ask their local leaders to hold meetings in sensitive areas and instructed senior police officers to visit vulnerable police stations at the earliest

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News Network
June 29,2020

New Delhi, Jun 29: India recorded 19,459 new coronavirus cases and 380 deaths in the last 24 hours.

According to the Ministry of Health and Family Welfare on Monday, the total coronavirus cases in the country stands at 5,48,318 including 2,10,120 active cases, 3,21,723 cured/discharged/migrated and 16,475 deaths.

Maharashtra's COVID-19 count touched 1,64,626 and cases in Delhi have reached 83,077.

The total number of samples tested up to 28 June is 83,98,362 of which 1,70,560 samples were tested yesterday, as per the data provided by the Indian Council of Medical Research (ICMR). 

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