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.

Comments

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
April 27,2020

New Delhi, Apr 27: Indian prime minister Narendra Modi has said the monthlong ongoing lockdown has yielded positive results and that the country has managed to save “thousands of lives”.

Modi, who had a videoconference with various heads of the states on Monday, said the impact of the coronavirus, however, will remain visible in the coming months, according to a press statement released by his office. On the issue of getting back Indians who are overseas, the Prime Minister said that this has to be done keeping in mind the fact that they don’t get inconvenienced and their families are not under any risk.

During the meeting with state heads, Modi advocated for social distancing of at least 6 feet and the use of face masks as a rapid response to tackle COVID-19.

He said that states should put their efforts of converting hotspots, or red zones, into “orange and thereafter green zones”.

India last week eased the lockdown by allowing shops to reopen and manufacturing and farming activities to resume in rural areas to help millions of poor, daily-wage earners. But the economic costs of the nationwide lockdown continue to mount in a country of 1.3 billion people.

Modi, who put India under a strict lockdown on March 25, did not say if the lockdown restrictions will extend after May 3.

India has confirmed over 27,000 cases of the coronavirus, including 872 deaths.

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News Network
May 28,2020

New Delhi, May 28: The Crime Branch of the Delhi Police will file 12 chargesheets against 536 Tablighi Jamaat members from three countries, officials said on Thursday.

Till now, the police has already filed chargesheets against 374 foreigners from 32 countries.

The officials said the charges against the Tablighi Jamaat members pertain to violation of visa rules, government guidelines regarding the Epidemic Disease Act and acting negligently in a way that was likely to spread infection of disease dangerous to life.

The Tablighi Jamaat, a religious organisation in Nizamuddin in South Delhi, had allegedly organised a congregation in March in violation of mass gatherings.

The Tablighi Jamaat’s Nizamuddin Markaz (centre) had become a coroavirus hotspot in the national capital.

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Agencies
July 12,2020

Jaipur/New Delhi, Jul 12: The crisis in Rajasthan Congress has deepened with state Chief Minister Ashok Gehlot and his deputy Sachin Pilot at loggerheads.

While Gehlot is blaming BJP for trying to destabilise the state government by poaching MLAs, Pilot is camping in Delhi to speak to the party leadership regarding the political turmoil in the state.

According to sources, Pilot has sought an appointment with party's interim president Sonia Gandhi but time for the meeting has not yet been given by her. Although Pilot met another party leader to apprise him about the situation in the state and spelled out his grievance.

As of now, many MLAs, who are believed to be in the Pilot camp, are also in Delhi to meet the party leadership. According to sources, the deputy chief minister has the support of nearly 30 Congress MLAs along with many independent legislators.

It is important to note that the controversy broke out in Rajasthan after Special Operation Group (SOG) sent a notice to Sachin Pilot to record his statement in the case registered by SOG in the alleged poaching of Congress MLAs in the state. The clash between Gehlot and Pilot is also over the post of PCC Chief as Gehlot Camp wants that 'One Leader One Post' formula to be implemented in Rajasthan. Currently, Sachin Pilot is heading the PCC besides holding the Deputy CM post.

Sources close to Sachin Pilot have informed that the young leader is upset with the notice issued to him. He believes it is aimed to record his phone calls and keep him under surveillance. Many of Pilot's supporters feel indignation and told Pilot that they cannot work with Ashok Gehlot. Also, Pilot is unlikely to attend the meeting called by Gehlot today, according to sources.

While the top leadership of the party is keeping mum, sources say it is keeping a watch on the development. General Secretary KC Venugopal has taken up the matter of the rift with the party's top brass with them not happy about it.

Rajasthan AICC Incharge Avinash Pandey told media persons: "Everything is under control. Few MLAs had issues and after discussion, they have returned back to Jaipur and others are also in touch. BJP's attempt of destabilising the government will not be successful in Rajasthan and government is stable."

Gehlot also held a meeting with ministers last night in Jaipur.  According to Gehlot camp, the top leadership is apprised of the development of the poaching attempt in the state. Amid Political Crisis Rajasthan CM Ashok Gehlot called a meeting of Ministers and all Cong MLAs tonight at his residence.

The Rajasthan crisis has alerted the other senior leaders of the party who have opined that the Madhya Pradesh incident should not get repeated in Rajasthan.

Former Union Minister and Rajya Sabha MP Kapil Sibbal tweeted, "Worried for our party. Will we wake up only after the horses have bolted from our stables?"

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