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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Agencies
February 6,2020

New Delhi, Feb 6: Unemployment rate in the country as per a new survey was 6.1 per cent in 2017-18, the government informed Rajya Sabha on Wednesday.

Minister of State for Labour Santosh Gangwar said the government is conducting a new Periodic Labour Force Survey (PLFS) with new parameters and bigger sample size, and its results cannot be compared with previous surveys in this regard.

"As per the new Periodic Labour Force Survey being conducted by the government, the labour force participation is 36.9 per cent and the rate of unemployment for 2017-18 is 6.1 per cent," he said.

Replying to supplementaries during the Question Hour, the minister said the report of this survey is very different than the surveys conducted in previous years.

This survey is not comparable to previous surveys, he said, adding it was an attempt to provide authentic data with the new survey conducted through the Ministry of Statistics.

"We are focusing on infrastructure development and ease of doing business and India's position in the world has improved. India has improved its position to 63rd rank now in 2019 against 196 in previous years," he said.

"Our government is very conscious of creating employment opportunities and is running such programme which generates employment.

"The way our government is functioning, employment opportunities are being created and the youths are getting jobs also," the minister said.

Gangwar said the government has stopped the previous survey as the sample size was low and an attempt is being made to improve the data by adding various parameters and provide more authentic data.

The minister said it will take time for collection of data as households have to be visited on the ground for authentic data collection in rural areas also.

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Agencies
March 10,2020

Bhopal, Mar 10: The number of MLAs who have resigned from the Congress in Madhya Pradesh climbed to 20 on Tuesday afternoon with another legislator quitting the ruling party, sources said.

While 19 MLAs, most of them believed to be loyal to expelled party leader Jyotiraditya Scindia, have sent their resignation letters via e-mail to Raj Bhavan, Bisahulal Singh submitted his resignation letter as an MLA to the Assembly speaker.

"We have received resignations of 19 MLAs through e-mails with attachments," a Raj Bhawan official told PTI.

Sources in Congress produced a copy of Bisahulal Singh's resignation letter which he submitted to the speaker.

Former chief minister and senior BJP leader later announced that Singh (65) has joined the BJP.

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News Network
January 28,2020

Nagpur, Jan 28: A 19-year-old woman was allegedly raped and an iron rod was inserted in her private parts by a man in the Pardi area here, police said on Monday.

The gruesome incident took place on January 21 and the accused, Yogilal Rahangdale (52), was arrested from Gondia district, they said.

The accused was working as a supervisor in a spinning mill where the woman was employed as a labourer, the police said.

The woman, her brother, the accused and another girl lived in rented accommodations in Pardi.

Inspector Sunil Chavan of the Pardi police station said that the woman's brother and her female friend had gone to their village on January 21 for some work.

As the woman was alone at home, Rahangdale attempted to rape her in the night. When she resisted, he stuffed a piece of cloth in her mouth, he said.

When she fell unconscious, the accused raped her and inserted an iron rod in her private parts, Chavan said, quoting from the complaint filed by the victim.

She narrated the incident to her brother on January 24 and they subsequently lodged a complaint with the police.

An offence was registered against the accused at the Pardi police station.

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