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
June 27,2020

New Delhi, Jun 27: India on Saturday crossed 5 lakh-mark with record highest spike of 18,552 cases of coronavirus reported in the country in the past 24 hours.

India has added more than 3.18 lakh COVID-19 cases since June 1.

According to the Union Ministry of Health and Family Welfare, this was the highest single-day spike of COVID-19 positive cases. Also, with 384 fatalities in the past 24 hours, the total deaths inched closer to the 16000 mark.

With this, the total number of active cases are 1,97,387 while a total of 2,95,880 people have been cured or discharged from hospitals. The death toll stands at 15685 with one person migrated outside India, according to the health ministry update at 8 am today.

Maharashtra continues to top the countrywide list with a total number of COVID-19 positive cases at 1,52,765.

Delhi has so far reported 77,240 confirmed cases while Tamil Nadu has reported 74622 cases till now, as per the MoHFW. Delhi, Mumbai and Chennai are the worst-hit cities in the country

According to the Indian Council of Medical Research (ICMR), the total number of samples tested up to June 26 is 79,96,707; the number of samples tested on June 26, Friday stands at 2,20,479.

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News Network
May 12,2020

New Delhi, May 12: Former Prime Minister Manmohan Singh, who was admitted to the AIIMS here after suffering reaction to a new medication, was discharged on Tuesday.

The 87-year-old Congress leader was discharged around 12:30 pm, hospital sources said.

Manmohan Singh was shifted to a private ward in the Cardio-Neuro tower on Monday night. He was also tested for Covid-19 and his results had come out negative, the sources said. The Congress leader was admitted to the hospital on Sunday evening after he complained of uneasiness.

The sources said that Singh had developed a reaction to a new medication and was admitted to AIIMS for observation and investigation.

Manmohan Singh is currently a Member of Rajya Sabha from Rajasthan. He was the prime minister between 2004 and 2014.

In 2009, Singh underwent a successful coronary bypass surgery at the AIIMS.

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Agencies
July 2,2020

Moscow, Jul 2: Russian voters approved changes to the constitution that will allow President Vladimir Putin to hold power until 2036, but the weeklong plebiscite that concluded Wednesday was tarnished by widespread reports of pressure on voters and other irregularities.

With most of the nation's polls closed and 20% of precincts counted, 72% voted for the constitutional amendments, according to election officials.

For the first time in Russia, polls were kept open for a week to bolster turnout without increasing crowds casting ballots amid the coronavirus pandemic a provision that Kremlin critics denounced as an extra tool to manipulate the outcome.

A massive propaganda campaign and the opposition's failure to mount a coordinated challenge helped Putin get the result he wanted, but the plebiscite could end up eroding his position because of the unconventional methods used to boost participation and the dubious legal basis for the balloting.

By the time polls closed in Moscow and most other parts of Western Russia, the overall turnout was at 65%, according to election officials. In some regions, almost 90% of eligible voters cast ballots.

On Russia's easternmost Chukchi Peninsula, nine hours ahead of Moscow, officials quickly announced full preliminary results showing 80% of voters supported the amendments, and in other parts of the Far East, they said over 70% of voters backed the changes.

Kremlin critics and independent election observers questioned the turnout figures.

We look at neighboring regions, and anomalies are obvious there are regions where the turnout is artificially (boosted), there are regions where it is more or less real, Grigory Melkonyants, co-chair of the independent election monitoring group Golos, told The Associated Press.

Putin voted at a Moscow polling station, dutifully showing his passport to the election worker. His face was uncovered, unlike most of the other voters who were offered free masks at the entrance.

The vote completes a convoluted saga that began in January, when Putin first proposed the constitutional changes.

He offered to broaden the powers of parliament and redistribute authority among the branches of government, stoking speculation he might seek to become parliamentary speaker or chairman of the State Council when his presidential term ends in 2024.

His intentions became clear only hours before a vote in parliament, when legislator Valentina Tereshkova, a Soviet-era cosmonaut who was the first woman in space in 1963, proposed letting him run two more times.

The amendments, which also emphasize the primacy of Russian law over international norms, outlaw same-sex marriages and mention a belief in God as a core value, were quickly passed by the Kremlin-controlled legislature.

Putin, who has been in power for more than two decades longer than any other Kremlin leader since Soviet dictator Josef Stalin said he would decide later whether to run again in 2024.

He argued that resetting the term count was necessary to keep his lieutenants focused on their work instead of darting their eyes in search for possible successors.

Analyst Gleb Pavlovsky, a former Kremlin political consultant, said Putin's push to hold the vote despite the fact that Russia has thousands of new coronavirus infections each day reflected his potential vulnerabilities.

Putin lacks confidence in his inner circle and he's worried about the future, Pavlovsky said.

He wants an irrefutable proof of public support.

Even though the parliament's approval was enough to make it law, the 67-year-old Russian president put his constitutional plan to voters to showcase his broad support and add a democratic veneer to the changes.

But then the coronavirus pandemic engulfed Russia, forcing him to postpone the April 22 plebiscite.

The delay made Putin's campaign blitz lose momentum and left his constitutional reform plan hanging as the damage from the virus mounted and public discontent grew.

Plummeting incomes and rising unemployment during the outbreak have dented his approval ratings, which sank to 59%, the lowest level since he came to power, according to the Levada Center, Russia's top independent pollster.

Moscow-based political analyst Ekaterina Schulmann said the Kremlin had faced a difficult dilemma: Holding the vote sooner would have brought accusations of jeopardizing public health for political ends, while delaying it raised the risks of defeat.

Holding it in the autumn would have been too risky, she said.

In Moscow, several activists briefly lay on Red Square, forming the number 2036 with their bodies in protest before police stopped them.

Some others in Moscow and St. Petersburg staged one-person pickets and police didn't intervene.

Several hundred opposition supporters rallied in central Moscow to protest the changes, defying a ban on public gatherings imposed for the coronavirus outbreak. Police didn't intervene and even handed masks to the participants.

Authorities mounted a sweeping effort to persuade teachers, doctors, workers at public sector enterprises and others who are paid by the state to cast ballots. Reports surfaced from across the vast country of managers coercing people to vote.

The Kremlin has used other tactics to boost turnout and support for the amendments.

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