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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Agencies
January 11,2020

New Delhi, Jan 11: Assets worth Rs 78 crore have been attached by the ED in connection with a money laundering probe against former ICICI Bank Chairman Chanda Kochhar and others, officials said on Friday.

A provisional order under the Prevention of Money Laundering Act (PMLA) has been issued for attachment of the properties that includes Kochhar's Mumbai-based house and some other assets belonging to a company linked to her, they said.

The book value of the attached assets is Rs 78 crore, they said.

The Enforcement Directorate (ED) is probing Kochhar, her husband Deepak Kochhar and others in a case of alleged irregularities and money laundering in giving loans by the bank to the Videocon group.

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Agencies
March 12,2020

Thiruvananthapuram, Mar 12: In the wake of COVID-19 outbreak, Internet service providers in Kerala have agreed to step up the network capacity by 30 to 40 per cent of the present capacity to meet the demand, especially in view of the spurt in work-at-home mode.

"The decision was made at a meeting of representatives of various telecom service providers in Kerala circle and officials of the Telecommunication Department convened by the Secretary, Electronics and IT, following a direction by Chief Minister Pinarayi Vijayan to look into the issue," said a press release by the IT Department.

The decision will be beneficial for those working in IT institutions. The government has come out with a set of suggestions to avoid social gatherings at public places in view of coronavirus spread. Telecom service providers have assured the government that they are well equipped to face the current situation.

The major part of Internet consumption in Kerala is made available through local servers. Moreover, global Internet traffic is very low as compared to the overall consumption. So, increasing the capacity won't be difficult, service providers informed.

"Complaints regarding the low availability of the Internet due to the spurt in consumption of the Internet can be made to the service providers to their complaint redressal number or inform state government call centre (155300). But complaints regarding the insufficiency in the current network infrastructure should be strictly avoided," said the release.

The IT Department will also demand daily reports from various telecom service providers. By analysing these reports, steps for remedies will be taken after bringing the sudden increase in consumption to the service providers.

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News Network
January 21,2020

Jan 21: Indian policymakers may make it easier for companies to tap foreign funding, as a prolonged cash squeeze makes it tough for firms to borrow at home.

Investors are speculating about potential steps Finance Minister Nirmala Sitharaman could unveil when she presents the nation’s budget on Feb. 1. These measures may include freeing up firms to borrow at higher rates and offering tax breaks to global funds.

“The government will need to relax local rules to make it easier for Indian companies to raise debt overseas and tide over the funding crunch in the onshore market,” said Raj Kothari, London-based head of trading at Jay Capital Ltd. “At the same time, they need to ensure that the borrowers tapping offshore markets abide with stricter corporate governance so as to avoid further defaults.”

A prolonged crisis in India’s shadow bank sector and a pile of bad loans at traditional lenders is making it expensive for Indian companies, other than the best-rated firms, to access funding. The government has tried a series of measures to spur domestic credit, including providing so-called credit enhancement and allowing tiny firms to restructure debt.

Here are some steps Sitharaman may consider to spur foreign borrowing:

• She could raise the cap of 450 basis points above Libor, which limits overall foreign debt costs for Indian companies

• This could help lower-rated firms sell bonds abroad. Indian companies rated BBB currently borrow at more than 10%, about 3.8 percentage points more than their top-rated peers;

• Sitharaman could waive the withholding tax foreign investors need to pay on holdings of rupee-denominated debt sold by Indian companies abroad

• The waiver was offered between September 2018 to March 2019, but wasn’t extended as the highest global interest rates since the financial crisis deterred Indian borrowers. Since then, the three-month Libor has dropped by about 1 percentage point

• She could permit Indian property developers and housing finance lenders to sell overseas bonds for reasons beyond affordable housing projects

• New funding lines to the real estate sector, arguably ground zero of India’s economic slowdown, could help kickstart consumption and investment as the industry is the nation’s biggest job-creator.

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