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
November 11,2024

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Mangaluru: In a deeply tragic turn of events, a 28-year-old woman named Ranjitha, who had recently given birth but tragically lost her newborn, ended her life by suicide on Monday. She reportedly leapt from the fourth-floor window of Lady Goschen Hospital’s luggage room.

Ranjitha, whose strength and resilience had carried her through a difficult pregnancy, was scheduled for discharge on Monday. Her journey to Lady Goschen Hospital began on October 24, when she was transferred from Karkala. She was a high-risk patient, battling both hypertension and diabetes. At the time of her admission, she was just 27 weeks pregnant.

Due to the complexities of her health, doctors made the difficult decision to perform an emergency C-section on October 30. She delivered a baby girl, premature and weighing only 960 grams. The newborn was immediately moved to the Neonatal Intensive Care Unit, where doctors did all they could. Despite these efforts, the baby passed away on November 3.

Ranjitha’s sorrow was profound. She stayed under hospital care even after her initial recovery and was preparing to go home on November 9. She had even requested a couple more days at the hospital, seeking time perhaps to cope with her unimaginable grief.

On the day of her discharge, a discharge card ready and her family eagerly waiting to take her home, Ranjitha reportedly made her way to the luggage room in the early hours. There, standing on a cot placed for patients' family members, she climbed to a window and fell from the fourth floor. Despite the attempts of another visitor to intervene, tragedy was inevitable. She was rushed to Government Wenlock Hospital, where doctors confirmed the worst—she was no more.

Dr. Durgaparasad M R, the Medical Superintendent at Lady Goschen Hospital, shared his grief and spoke of the ongoing investigation. A post-mortem is to be conducted, and the local Tahsildar will complete the necessary inquest procedures. Ranjitha’s exact reasons for taking this step are yet to be confirmed, though the weight of her recent losses paints a sorrowful picture.

If you or anyone you know is struggling emotionally, please remember that help is available. Reach out to mental health experts who can provide support and guidance. The toll-free helpline number 9152987821 is available to assist anyone in distress.

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News Network
November 11,2024

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Udupi, Nov 11: The Karkala town police in Udupi have arrested Krishna Naik, the sculptor responsible for installing a 33-foot Parashurama statue at Umikkal Hill in Bailur, Karkala taluk. 

Naik, the owner of Krish Art World and a resident of Bengaluru's Visvesvaraya Layout, was apprehended in Mahe, part of the Union Territory of Puducherry, for allegedly substituting a look-alike statue in place of a genuine bronze figure at the Parashurama Theme Park in Karkala.

Udupi Superintendent of Police Dr. Arun K confirmed the arrest, stating that Naik faces charges under Sections 420 (cheating) and 409 (criminal breach of trust) of the Indian Penal Code. 

This legal action followed a complaint lodged in June by Krishna Shetty, a resident of Nallur village, Karkala. Shetty claimed that Naik had received a payment of ₹1,25,50,000 from Udupi Nirmithi Kendra for the installation of a bronze Parashurama statue. However, Naik allegedly deceived the government by installing a replica instead.

The statue was unveiled on January 27, 2023, by then Chief Minister Basavaraj Bommai. Current Chief Minister Siddaramaiah has since ordered a CID investigation to probe deeper into the alleged fraud surrounding the statue's installation at the theme park.

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News Network
November 21,2024

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Shares of Adani Group companies lost about $28 billion in market value in morning trade on Thursday after US prosecutors charged the billionaire chairman of the Indian conglomerate in an alleged bribery and fraud scheme.

Gautam Adani's flagship company Adani Enterprises tumbled 23 per cent, while Adani Ports, Adani Total Gas, Adani Green, Adani Power, Adani Wilmar and Adani Energy Solutions, ACC , Ambuja Cements and NDTV fell between 20 per cent and 90 per cent.

Adani group's 10 listed stocks had a total market capitalisation of about $141 billion at 0534 GMT, compared to $169.08 billion on Tuesday.

US authorities said Adani and seven other defendants, including his nephew Sagar Adani, agreed to pay about $265 million in bribes to Indian government officials to obtain contracts expected to yield $2 billion of profit over 20 years, and develop India's largest solar power plant project.

Adani Green in a statement on Thursday said the US Justice Department had issued a criminal indictment against board members Gautam Adani and Sagar Adani and the Securities and Exchange Commission had issued a civil complaint against them.

The US Justice Department also included Adani Green board member Vneet Jaain in the criminal indictment, it said.

Adani Green's units had decided not to proceed with the proposed US dollar denominated bond offerings due to developments, it added.

"Investors will shy away from Adani Group stocks ... and that's what this sharp selling is signifying," said Saurabh Jain, assistant vice president of retail equities research at SMC Global Securities.

"This could hurt the credibility of the group and maybe borrowing costs will rise," he said.

The indictment comes nearly two years after US shortseller Hindenburg Research alleged that Adani had improperly used tax havens and was involved in stock manipulation, allegations the conglomerate denied.

Also in early Asian trading on Thursday, Adani dollar bonds slumped, with prices down 3c-5c on bonds for Adani Ports and Special Economic Zone. The falls were the largest since the Adani Group came under a short-seller attack in February 2023.

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