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
May 5,2024

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New Delhi, May 5: Actor-turned-politician Kangana Ranaut intended to target an opposition leader but mistakenly ended up attacking her BJP colleague instead. 

A similarity in names - Tejashwi and Tejasvi - was behind Ms Ranaut's fumble. "There's a party of spoilt princes... whether it's Rahul Gandhi who wants to grow potatoes on the Moon, or Tejasvi Surya who does hooliganism and eats fish," she had said.

RJD leader and former Bihar deputy Chief Minister Tejashwi Yadav was supposed to be the original target of her diatribe as one of his videos where he was seen eating fish became a major flashpoint between the BJP and the opposition recently.

Tejasvi Surya, incorrectly referred to by Ms Ranaut during an election rally yesterday, is BJP's Lok Sabha candidate from Bengaluru South constituency in Karnataka.

Meanwhile, Mr Yadav has responded to a clip of Kangana Ranaut's statement. "Ye mohtarma kaun hai?" (Who is this lady?), he posted on X.

Kangana Ranaut has been verbally bashing the Congress party since the BJP fielded her as their Lok Sabha candidate from Himachal Pradesh's Mandi. Congress leaders Vikramaditya Singh - her opponent in Mandi - and Rahul Gandhi have been the main targets on her dartboard.

While addressing a public rally in the Sundernagar area of Mandi Parliamentary Constituency yesterday, Ms Ranaut took a jibe at Mr Singh and Mr Gandhi over dynasty politics and said that both of them have a magic stick for development and talk only about non-practical things.

The Congress hit back saying the 37-year-old actor should first check the facts about her party leaders and speak about dynastic politics. National Media Coordinator for the Congress, Amrit Kaur, also questioned her qualifications on which she got a BJP ticket from Mandi.

The Mandi Lok Sabha constituency will go to polls on June 1, in the seventh phase of the 2024 Lok Sabha elections.

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News Network
May 4,2024

Mangaluru: Dakshina Kannada Deputy Commissioner (DC) Mullai Muhilan MP said that election for the South West Teachers and Graduates constituencies will be held on June 3.

The notification for the same will be issued on May 9. The last date for filing nominations is May 16. The nominations must be submitted to Regional Commissioner in Mysuru and the last date for withdrawal of nomination is May 17.

The counting of votes will be held on June 6.

As of December 30, 2023 there are 6753 voters in DK district in the South West Teachers Constituency out of which 4520 are women. On the other hand, there are 16,869 graduate voters in the district for the South West graduates constituency.

The voters can submit their application for enrollment in electoral list of the South West Teachers and graduates constituency till May 6. The applications can be submitted at Mangaluru City Corporation or all the taluk offices.

Bulk applications can be submitted by Bar Association, Doctors association, Chartered Accountants Association, registered engineers association for the graduates constituency.

Those who are graduates prior to November 11, 2020 can enroll for voters list in the graduates constituency  by submitting Form 18 along with photo copy of marks card, Aadhaar card, voters' identity card and residential address.

For getting oneself enrolled in the teachers constituency voters, an individual should be teaching for minimum three years prior to November 1, 2023 in high school or higher educational institutions.

For the teachers constituency, educational institutions can submit applications in bulk. If wrong details are furnished in these applications, then they will be punishable under Section 31 of Representation of People Act, warned the DC.

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News Network
May 14,2024

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Bengaluru, May 14: JD(S) leader HD Revanna has been released from Parappana Agrahara Jail today, on May 14 after he was granted conditional bail. 

He was granted a conditional bail yesterday by a Bengaluru court in connection with a kidnapping case linked to sexual abuse allegation against him and his son Prajwal.

Revanna was arrested on May 4 by Special Investigative Team (SIT) officials in a kidnapping case registered against him at KR Nagar police station in the city. The case is linked to his son and Hassan MP Prajwal Revanna’s mega sex scam. 

Representing the JD(S) MLA from Holenarsipura, he termed this case a "political conspiracy" against him.

A SIT, constituted by the Karnataka government, is probing the alleged sexual abuse against against HD Revanna and his son Prajwal Revanna.

Prajwal Revanna, the incumbent MP, is seeking another term from Hassan Lok Sabha constituency. The voting for the seat took place on April 26.

Earlier, JD (S) chief HD Kumaraswamy alleged that Karnataka government does not want a fair inquiry.

"They are misusing the office. Nothing is going to happen ultimately. They wanted character assassination of HD Revanna and for that reason, they are using their office," Kumaraswamy told ANI.

Meeting Karnataka Governor Tawara Chanda Gehlot on May 9, a delegation of the Janata Dal (Secular) submitted a memorandum and urged Gehlot to recommend a CBI probe.

Prajwal sill absconding

The JD(S) MP, Prajwal, fled to Germany after Karnataka State Commission for Women Nagalakshmi Chowdhary wrote to Chief Minister Siddaramaiah seeking an investigation into over obscene videos of Prajwal Revanna allegedly sexually abusing several women. He has also skipped summons issued by the SIT to appear before it.

The ‘obscene videos’ involving Prajwal Revanna started making the rounds ahead of the first phase of Lok Sabha elections in Karnataka on April 26, triggering a political slugfest.

A lookout notice against Prajwal Revanna has been issued at all airports in India, along with a Blue Corner notice. A Blue Corner notice issued by Interpol helps countries collect and share information regarding a person's location and their activities as part of a criminal investigation.

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