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.

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
February 11,2020

New Delhi, Feb 11: The Aam Aadmi Party on Tuesday appeared to be heading back to power for a second term in Delhi with the party leading in 52 seats of the 70 and the BJP ahead in 18 as votes for last week's assembly elections were counted, according to Election Commission figures. The contest for political power over the national capital was a bipolar one with the Congress nowhere in the reckoning, according to initial trends.

AAP supremo and chief minister Arvind Kejriwal was leading in the New Delhi seat by 4,300 seats, while his deputy Manish Sisodia from Patparganj seat was ahead by 102 votes.

BJP leader Vijender Gupta, who is also leader of opposition in the Delhi legislative assembly, was trailing by over 1,200 votes from Rohini.

As early celebrations broke out in the AAP headquarters in Rouse Avenue, BJP's Delhi unit chief Manoj Tiwari asked his party supporters not to lose hope.

"There are 27 seats where the difference of votes is between 700 to 1,000," Tiwari told reporters.

Looking ahead at victory, he said he was not nervous and was ready to take on the responsibilities that a win would bring.

"All talk is over. We have to wait for the blessings of the people. I am confident it will be a good day for BJP. We are coming to power in Delhi today. Don't be surprised if we win 55 seats," Tiwari said.

Kejriwal, who had led his party to a spectacular win of 67 of 70 seats in 2015, is expected to address party workers and the media later in the day. However, his party workers were upbeat and in celebratory mode.

"We have been saying since the beginning that the upcoming polls will be fought on the basis of work done by us... You wait and watch, we will register a massive win," AAP spokesperson Sanjay Singh told reporters.

"We hope we get such a clear majority that a message goes out that doing Hindu-Muslim politics will not work anymore," said AAP volunteer Fareen Khan at the party office.

The headquarters were decorated with blue and white balloons and big cutouts of Kejriwal were placed in different parts of the office.

Labour minister and AAP's Delhi unit convenor Gopal Rai was leading in Badarpur constituency by 1,994 votes.

Atishi, AAP's Kalkaji candidate, who was also instrumental in the transformation of Delhi government schools, was trailing by 190 votes.

AAP's Timarpur candidate Dilip Pandey was leading by over 1,500 votes.

BJP's Tajinder Singh Bagga was trailing on Hari Nagar seat by over 50 votes, while AAP's Raghav Chadha is leading from Rajinder Nagar constituency.

Congress' Chandni Chowk candidate Alka Lamba, who is sitting MLA from the constituency, was trailing by over 5,800 votes.

Counting centres are spread across 21 locations in 11 districts, including at the CWG Sports Complex in east Delhi, NSIT Dwarka in west Delhi, Meerabai Institute of Technology and G B Pant Institute of Technology in southeast Delhi, Sir CV Raman ITI, Dheerpur in central Delhi, and Rajiv Gandhi Stadium in Bawana in north Delhi.

The assembly elections were held on February 8.

A total of 672 candidates, including 593 men and 79 women, were in the fray for the hotly contested, often divisive polls with the anti-CAA protests in Shaheen Bagh occupying centrestage towards the end of the campaign.

While the AAP, of course, put forward Kejriwal, Prime Minister Narendra Modi, home minister Amit Shah and Uttar Pradesh chief minister Yogi Adityanath were among those who extensively campaigned for the BJP.

The Congress, still recovering maybe from the death of its three-time Delhi chief minister Sheila Dikshit in July last year, got into campaign mode much later. Former prime minister Manmohan Singh and party leaders Rahul Gandhi and Priyanka Gandhi were among those who campaigned for the Congress.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
June 2,2020

New Delhi, Jun 2: India on Tuesday reported 8,171 more COVID-19 cases and 204 deaths in the last 24 hours as the country's virus count inches closer to two lakh, according to the Union Ministry of Health and Family Welfare.

The total number of cases in the country now stands at 1,98,706 including 97,581 active cases, 95,527 cured/discharged/migrated and 5,598 deaths.

Cases in Maharashtra have crossed 70,000 including over 30,000 recovered while Tamil Nadu's COVID-19 tally jumped to 23,495.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
January 18,2020

Jan 18: Days after the arrest of Deputy SP Davinder Singh along with two Hizbul Mujahideen terrorists, Shiv Sena on Saturday questioned the role of police in the Kashmir Valley.

"Cross border infiltration is ongoing in Kashmir. But the police machinery is being used to help the terrorists in Kashmir to safely cross the border (to Pakistan) and a President's medal awarded Deputy SP was arrested for doing so. In Kashmir (it seems), the government is using the police for some other purposes, what will the country's Home Ministry say if somebody has a doubt in connection with the Pulwama attacks," Sena mouthpiece, Saamna, read.

This was in reference to the incident in which Jammu and Kashmir police intercepted a vehicle on Sunday and arrested DySP Davinder Singh along with two top Hizbul Mujahideen terrorists, who were travelling together.

The Sena mouthpiece asserted that the impact and acceptance of the Centre removing Article 370 should be visible "through the people" during the upcoming Republic Day celebrations.

"Jammu and Kashmir is now a Union Territory. It is being ruled by the Centre through President's Rule. The government had removed Article 370 in a historic decision...The joy and excitement in the people over the removal of 370 should be visible in the Republic Day celebrations this time. The tricolour should be seen flying over all houses in Kashmir, it is the least that can be expected," it added.

The Sena mouthpiece further said that with the arrest of terrorists in the recent days, it hoped that "Republic Day will be celebrated safely in Delhi, Jammu and Kashmir".

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.