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
February 14,2020

New Delhi, Feb 14: Senior Congress leader P Chidambaram on Thursday said there must be a "huge mass movement" if any Muslim was sent to detention camps in case the Supreme Court upheld the validity of the Citizenship Amendment Act (CAA).

Speaking at the JNU campus, the former Union minister said the CAA was an outcome of the "NRC fiasco" in Assam that left 19 lakh people out of the document.

The CAA was brought to accommodate the 12 lakh Hindus among the 19 lakh people who could not be included in the National Register of Citizens (NRC) in Assam, he claimed.

Replying to a question by a student on the best course of action if the CAA was upheld by the apex court, Chidambaram said, "When they touch the excluded...they will only be Muslims, to identify and throw them out, declare them stateless, there must be a huge mass movement, resisting any Muslim being thrown out or kept in detention camps."

He also said the Congress believed that the CAA must be repealed and there should be a political struggle so that the National Population Register (NPR) was pushed beyond 2024.

Claiming that the NRC, CAA and NPR were "closely connected" to each other, Chidambaram said, "The CAA was brought due to the NRC fiasco in Assam and the opposition to the CAA gave way to the NPR."

He asserted that the Congress was protesting against the CAA and the NRC across the country, but had consciously avoided going to Shaheen Bagh, as in that case, the ruling Bharatiya Janata Party (BJP) would brand the demonstration against the amended citizenship law as a "political" one.

"See, we are not going to Shaheen Bagh because that would be falling into the BJP's trap. If we go there, they (BJP) will say it is political," the senior Congress leader said.

Slamming the CAA and the NRC as instruments undermining the very basis of the formation of India, he said the country, instead, needed a "broad law" on refugees.

Speaking at an event against the NRC, CAA and NPR hosted by the Congress's student wing, NSUI, at the Jawaharlal Nehru University (JNU), Chidambaram accused the BJP of spreading lies against Opposition parties.

"The BJP says the Congress, the Left and other liberal parties are against citizenship to persecuted Hindus, Sikhs from Pakistan, Bangladesh. But we are not against those included, our opposition is against exclusion," he said.

Questioning the rationale behind the CAA, the former finance minister said it excluded people on the basis of religion.

"Why only three countries, what about other neighbouring countries — Nepal, Bhutan, China? What about others treated much worse? The Ahmadiyas and Shias of Pakistan, the Rohingyas of Myanmar, Tamil Hindus are equally persecuted, why are they left out?" he questioned.

Chidambaram also said the CAA did not cover persecution based on language, political ideology and economic deprivation.

Slamming the NRC, he wondered which country would accept those left out of the document.

"Which country is going to accept them? How will they go? Where will you send them? (Home Minister) Amit Shah saying that they are termites and he will throw them out by 2024 is talking through his hat," the senior Congress leader said.

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News Network
July 6,2020

New Delhi, Jul 6: India's COVID-19 tally neared the 7 lakh mark with 6,97,413 cases after 24,248 new cases were reported in the last 24 hours, said the Union Ministry of Health and Family Welfare.

As per the Health Ministry, there are 2,53,287 active cases in the country while 4,24,432 patients have been cured or discharged. While one patient has migrated.

425 new deaths were reported in the last 24 hours in the country due to COVID-19, taking the number of patients succumbing to the deadly virus to 19,693.

As per the Health Ministry, Maharashtra continues to be the most impacted state from the infection with 2,06,619 cases and 8,822 fatalities due to the virus. Tamil Nadu in second place has a total of 1,11,151 cases and 1,510 fatalities.

The national capital's COVID-19 cases are also nearing the 1-lakh mark with 99,444 coronavirus cases and 3,067 deaths.

The total number of samples tested up to July 5 is 99,69,662 of which 1,80,596 samples were tested yesterday, informed the Indian Council of Medical Research on Monday. 

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News Network
March 11,2020

New Delhi, Mar 11: Jyotiraditya Scindia, the Madhya Pradesh politician whose surprise exit from the Congress has brought the Kamal Nath government to the brink of collapse, joined the Bharatiya Janata Party on Wednesday. Scindia joined the BJP at an event in national capital Delhi in the presence of party chief JP Nadda.

Scindia, who was warmly welcomed by Nadda, described 10 March, the day that he exited from the Congress as one of the two life-changing days of his life. The first, he said, was 30 September 2001 when he lost his father. Scindia underscored that the Congress was not the party that it had been and had been living in denial.

Scindia had ended his 18-year-old association with the Congress on Tuesday after meetings with Home Minister Amit Shah and Prime Minister Narendra Modi.

Scindia’s exit from the Congress was followed by resignation letters by about 22 MLAs who had been sequestered in Karnataka. The resignation letters were, however, sent to the Governor and not the assembly speaker, and threatens to upend the Kamal Nath government which has a wafer-thin majority.

If the resignations are accepted, the effective strength of the MP assembly will come down to 206, leaving the Bharatiya Janata Party (BJP) with a slender majority beyond the halfway mark of 103 with its 107 MLAs. For now, the Congress is trying to persuade the MLAs to not pull down the state government.

In his resignation letter to Congress chief Sonia Gandhi that Scindia put out on Twitter soon after, he alluded to his discomfort in the party over the last year or so. “...as you well know, this is a path that has been drawing itself out over the last year,” he had written in his letter.

It was seen as a reference to the Congress settling for Kamal Nath as the chief minister after the 2018 state elections though it was Scindia who had led from the front to oust the BJP from Madhya Pradesh. Scindia’s supporters had hoped that the Congress would tell Kamal Nath to give up his second charge - as the party chief in the state - but this also didn’t happen.

The first hint that something was amiss came in November last year when Scindia removed a reference to the Congress in his Twitter bio and instead wrote “public servant and cricket enthusiast”. He had then explained the change to an effort to make the Twitter bio shorter.

Jyotyiraditya Scindia’s aunt Yashodhara Raje Scindia appeared to declare soon after that the 49-year-old would join the BJP when she welcomed his resignation, calling it “ghar wapsi” or homecoming. “Jyotiraditya was being neglected in Congress,” Yashodhara Raje Scindia said.

Scindia’s grandmother, Vijaya Raje Scindia, was one of the founders of the Jana Sangh, the precursor to the BJP. His aunt Vasundhara Raje is a former Union minister and ex-chief minister of Rajasthan and another aunt Yashodhara Raje is a former minister in the Madhya Pradesh cabinet.

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