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
May 26,2020

New Delhi. May 26: 6,535 more coronavirus cases have been reported in India in the last 24 hours, taking the total number of COVID-19 cases in the country to 1,45,380, informed Union Ministry of Health and Family Welfare on Tuesday.

Out of the total, at present, there are 80,722 active cases in the country. So far, 60,490 people have been cured/discharged and 4167 have died due to the lethal infection.

According to the data compiled by the Centre, Maharashtra has so far recorded the maximum number of cases of COVID-19 across the country with 52,667 people.

The tally of cases in Tamil Nadu has risen to 17,082. While Gujarat has recorded 14,460 cases of the infection so far.

There are 14,073 cases of coronavirus in the national capital.

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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
May 7,2020

Visakhapatnam, May 7: Andhra Pradesh Chief Minister Y S Jagan Mohan Reddy on Thursday announced an ex- gratia payment of Rs one crore each to the kin of those killed in the styrene gas leak incident at LG Polymers Limited near here.

The NDRF had put the death toll from the leak at 11.

The chief minister announced a committee to probe into the mishap and also said the government would talk to the LG Polymers management seeking job for the kin of the deceased in any of its businesses.

Speaking to reporters after conducting a review meeting, Reddy also announced Rs 10 lakh each to those undergoing treatment on ventilator support and Rs 25,000 to those who took treatment as out-patients after developing health complications due to inhalation of the styrene vapour.

Earlier, he held a review meeting at the Andhra Medical College with District Collector Vinay Chand and others.

The gas leak victims undergoing treatment in various hospitals would be paid Rs one lakh each. The 15,000-odd population in the five villages that were affected by the gas leak would be paid Rs 10,000 each, the chief minister added.

Reddy further announced constitution of a high-level committee, headed by the Special Chief Secretary (Environment and Forests), to probe into the mishap and make recommendations to prevent such tragedies in the future.

Earlier, he visited the King George Hospital and consoled the victims of the gas leak.

Accompanied by his Deputy holding the health portfolio A K K Srinivas and Chief Secretary Nilam Sawhney, Reddy flew down to the port city and went straight to the KGH.

He met the gas leak victims undergoing treatment and enquired about their well-being.

At the review meeting, the Collector informed the Chief Minister that the gas spread was limited to a 1.5 to 2 km area from the epicentre of the leak and that the locals were evacuated to safety.

Of the two styrene tanks in the plant, the leak occurred from one that was holding about 1,800 kilo litres of the chemical.

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