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
January 3,2020

Washington, Jan 3: US President Donald Trump ordered the killing of Iran Revolutionary Guards commander Qasem Soleimani, who died in Baghdad "in a decisive defensive action to protect US personnel abroad," the Pentagon said Thursday.

"General Soleimani was actively developing plans to attack American diplomats and service members in Iraq and throughout the region. General Soleimani and his Quds Force were responsible for the deaths of hundreds of American and coalition service members and the wounding of thousands more," the Department of Defense said.

Following Soleimani's death, Trump tweeted an image of the US flag without any further explanation.

"US' act of international terrorism, assassinating General Soleimani—the most effective force fighting Daesh (ISIS), Al Nusrah,Al Qaeda, is extremely dangerous & foolish escalation. US bears responsibility for all consequences of rogue adventurism." said Iran Foreign Minister Javad Zarif.

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News Network
February 24,2020

New Delhi, Feb 24: The shared values between India and the US are "discrimination, bigotry, and hostility towards refugees and asylum seekers", Amnesty International USA said in a joint statement with Amnesty International India ahead of US President Donald Trump's visit to India on Monday.

Trump, accompanied by his wife Melania, daughter Ivanka and son-in-law Jared Kushner as well as senior officials of his administration, landed in Ahmedabad on the first leg of his two-day visit to India.

"Anti-Muslim sentiment permeates the policies of both U.S. and Indian leaders. For decades, the U.S.-India relationship was anchored by claims of shared values of human rights and human dignity. Now, those shared values are discrimination, bigotry, and hostility towards refugees and asylum seekers,” Margaret Huang, Amnesty International USA’s executive director, was quoted as saying in the statement.

It was a reference to the anti-CAA protests in India, the internet lockdown in Jammu and Kashmir and the Muslim ban expansion by President Trump affecting Nigeria, Eritrea, Myanmar, Kyrgyzstan, Sudan and Tanzania, the statement said.

It added that Amnesty International USA’s researchers travelled to Lebanon and Jordan to conduct nearly 50 interviews with refugees that as a result of the previous version of the ban have been stranded in countries where they face restrictive policies, increasingly hostile environments, and lack the same rights as permanent residents or citizens.

The statement also came down hard on the Indian government, hitting out at the Citizenship (Amendment) Act (CAA) 2019 and saying it legitimises discrimination based on religious grounds.

It criticised statements such as “identify them (the protestors) by their clothes” or “shoot the traitors” by Prime Minister Modi and his party workers. Such remarks "peddled the narrative of fear and division that has fuelled further violence", it said.

“The internet and political lockdown in Kashmir has lasted for months and the enactment of CAA and the crackdown on protests has shown a leadership that is lacking empathy and a willingness to engage. We call on President Trump and Prime Minister Modi to work with the international community and address our concerns in their bilateral conversations,” Avinash Kumar, executive director, Amnesty International India said in the statement.

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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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