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 3,2020

New Delhi, Feb 3: In the third such incident inside of a week, two unidentified persons opened fire outside Gate No. 5 of Jamia Millia Islamia on Sunday night, the Jamia Coordination Committee (JCC) said.

A statement issued by the committee, a group comprising students and alumni of the university formed to protest against the Citizenship Amendment Act, said the attackers were on a red Rcooty.

No one was injured in the attack. One of the miscreants was wearing a red jacket, the statement said.

"Firing has taken place at Gate No.5 of Jamia Millia Islamia right now by two unidentified persons. As per report, one of them was wearing a red jacket and driving a red Scooty having vehicle no. 1532 or 1534," the statement said.

Police said they were verifying the JCC's claims.

Asim Mohammed Khan, former Congress MLA from Okhla, said the incident occurred around 11.30 pm. "We heard the gunshot. That is when we stepped out to see and the two men left on a Scooty," a student said.

"We have taken down the vehicle number and called police," he added.

This is the third firing incident in the Jamia Nagar area in a week.

On Thursday, a minor fired at anti-CAA protesters marching towards Rajghat, injuring a student.

Two days later, a 25-year-old fired two rounds in air in Shaheen Bagh in Jamia Nagar. No one was hurt in the incident.

The incident on Sunday night triggered panic in the area. A police vehicle had reached the spot after the incident but was chased away by angry students.

Hundreds of students and locals gathered outside the university.

Many raised slogans against the Delhi Police. They also staged a dharna outside the Jamia Nagar police station.

Shezad Ahmed, a JMI student and resident of Zakir Nagar, said they were not even allowed to protest peacefully.

"We are not going to be deterred by such incidents. We will continue with our protest," he added.

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.
Agencies
June 12,2020

Mumbai, Jun 12: Following an overwhelming response for the mega rights issue of Mukesh Ambani-owned Reliance Industries, the partly paid-up rights shares are set to debut on stock exchanges on June 15.

The biggest ever Rs 53,124 crore rights issue was subscribed 1.59 times and received bids worth Rs 84,000 crore on June 3.

Reliance said the rights issue saw a huge investor interest, including from lakhs of small investors and thousands of institutional investors, both Indian and foreign.

In 2019, Ambani said in the Reliance's annual general meeting that the company will be net zero debt by March 2021. The company is on course to achieve its target ahead of the deadline.

"In spite of the COVID-19 crisis and the lockdowns, the due-diligence by Saudi Aramco for the planned investment in the O2C business is on track as both the parties are committed and actively engaged," he said recently.

"With a strong visibility to these equity infusions, Reliance is set to achieve net zero debt status ahead of its own aggressive timeline. We believe rights issue was a part of the company's strategy of deleveraging its balance sheet," said Ambani. 

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.
Agencies
February 11,2020

New Delhi, Feb 11 Congress's performance touched a record low in the Delhi Assembly election as the party bagged less than 5 per cent of the total votes polled and 63 of its candidates lost their deposits.

The party, which ruled Delhi for 15 years on the trot under former Chief Minister Sheila Dikshit, failed to open its account for the second consecutive assembly election in Delhi.

Only three of its candidates Arvinder Singh Lovely from Gandhi Nagar, Devender Yadav from Badli and Abhishek Dutt from Kasturba Nagar managed to save their deposits.

Security deposit of a candidate is forfeited if he/she fails to secure one-sixth of the total valid votes cast in a constituency.

Most of Congress candidates got less than 5 per cent of the total votes polled in their respective constituencies.

Delhi Congress chief Shubhash Chopra's daughter Shivani Chopra, who was the party candidate from Kalkaji, also could not save her deposit.

Former Delhi Assembly Speaker Yoganand Shastri's daughter Priyanka Singh also forfeited her deposit.

The party's campaign committee chairman Kirti Azad's wife, Poonam Azad, lost badly and stood fourth, polling only 2,604 (2.23) votes.

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.