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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Agencies
February 5,2020

San Francisco, Feb 5: After a German artist, Simon Weckert, demonstrated how he "hacked" Google Maps with 99 smartphones and a wagon to create "virtual traffic jams" on the streets of Berlin, Google responded to the incident saying it "appreciates" creative use of maps.

Admitting that it has not quite cracked travelling by wagon, the tech giant also hinted that it might use cases like this to improve how its maps work.

"We appreciate seeing creative uses of Google Maps like this as it helps us make maps work better over time," 9to5Google quoted a Google spokesperson as saying.

In a YouTube video, Weckert showed that he put 99 smartphones with Google Maps onto a small wagon cart and then wheeled that cart around various streets in Berlin, including outside the Google office, Android Authority reported on Monday.

The smartphones "apparently fooled Google Maps" into thinking that there was a high concentration of users on those streets.

Because the second-hand phones were in a cart, Maps was further tricked into believing that the traffic was slow-moving.

As a result, the navigation app started showing virtual traffic jams by turning green streets to red in the online navigational tool, showcasing how digital technology can have a real impact on the real world.

"Traffic data in Google Maps is refreshed continuously thanks to information from a variety of sources, including aggregated anonymised data from people who have location services turned on and contributions from the Google Maps community," the Google spokesperson said.

"We've launched the ability to distinguish between cars and motorcycles in several countries including India, Indonesia and Egypt, though we haven't quite cracked travelling by wagon," the statement added. After a German artist, Simon Weckert, demonstrated how he "hacked" Google Maps with 99 smartphones and a wagon to create "virtual traffic jams" on the streets of Berlin, Google responded to the incident saying it "appreciates" creative use of maps.

Admitting that it has not quite cracked travelling by wagon, the tech giant also hinted that it might use cases like this to improve how its maps work.

"We appreciate seeing creative uses of Google Maps like this as it helps us make maps work better over time," 9to5Google quoted a Google spokesperson as saying.

In a YouTube video, Weckert showed that he put 99 smartphones with Google Maps onto a small wagon cart and then wheeled that cart around various streets in Berlin, including outside the Google office, Android Authority reported on Monday.

The smartphones "apparently fooled Google Maps" into thinking that there was a high concentration of users on those streets.

Because the second-hand phones were in a cart, Maps was further tricked into believing that the traffic was slow-moving.

As a result, the navigation app started showing virtual traffic jams by turning green streets to red in the online navigational tool, showcasing how digital technology can have a real impact on the real world.

"Traffic data in Google Maps is refreshed continuously thanks to information from a variety of sources, including aggregated anonymised data from people who have location services turned on and contributions from the Google Maps community," the Google spokesperson said.

"We've launched the ability to distinguish between cars and motorcycles in several countries including India, Indonesia and Egypt, though we haven't quite cracked travelling by wagon," the statement added.

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News Network
June 25,2020

New Delhi, Jun 25: Union Home Minister Amit Shah on Thursday hit out at Congress for "unceremoniously sacking" its spokesperson and said that leaders in the opposition party are "feeling suffocated".

To substantiate his point, Shah referred to the recent Congress Working Committee (CWC) meet in which senior members and younger members raised a few issues, however, they were "shut down".

Taking to Twitter, Shah posted two English dailies' articles titled -- "Not scared of PM Modi, but many in the party dodge him: Rahul at Congress Working Committee meet" and "Congress removes Sanjay Jha as party spokesperson after critical article".

Last week, Jha was dropped as AICC spokesperson and Abhishek Dutt and Sadhna Bharti appointed as National Media Panelist of Congress party.

"During the recent CWC meet, senior members and younger members raised a few issues. But, they were shouted down. A party spokesperson was unceremoniously sacked. The sad truth is - leaders are feeling suffocated in Congress," the Union Minister tweeted.

Meanwhile, Shah also targetted Congress on the completion of 45 years of emergency, which was imposed by former Prime Minister Indira Gandhi on June 25, 1975 and asked the party to self introspect.

"As one of India's opposition parties, Congress needs to ask itself: Why does the Emergency mindset remain? Why are leaders who do not belong to 1 dynasty unable to speak up? Why are leaders getting frustrated in Congress? Else, their disconnect with people will keep widening," he wrote.

Comments

Fairman
 - 
Thursday, 25 Jun 2020

Jha the spokesperson, tried to be under the payroll of BJP, so disciplinary action was imminent.

 

Discipline has no compromise.

Mohammed
 - 
Thursday, 25 Jun 2020

If i am not wrong you have already purchased suffocated leaders from congress.

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News Network
March 12,2020

Mar 12: Three women were arrested for allegedly administrating fake coronavirus vaccines to villagers in Maharashtra's Jalna district, police said on Thursday.

The police on Wednesday arrested Beed residents Radha Ramnath Saamse, Seema Krishna Andhale and Sangeeta Rajendra Avhad, who allegedly posed as doctors and healthcare workers, an official said.

The trio met villagers of Pipalgoan in Ambad tehsil, informed them about a vaccine that could protect them from coronavirus and administered it to gullible locals, he said.

Some villagers informed Dr Mahadev Munde, a medical officer at a rural health centre, about this, after which a complaint was lodged, the official said.

Fake vaccines and bottles, which were seized from the accused, have been sent to the state health department, he said, adding that a case of cheating has been registered against the trio.

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