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
July 8,2020

New Delhi, Jul 8: India has reported a spike of 22,752 COVID-19 cases in the last 24 hours, taking the country's coronavirus tally to 7,42,417 on Wednesday, informed the Union Ministry of Health and Family Welfare.

Out of the total cases reported, 4,56,830 patients have been cured/discharged from the disease while one patient has been migrated, the Health Ministry informed.

It added that there are 2,64,944 active cases in the country.

482 deaths reported in the last 24 hours due to COVID-19 in the country, taking India's death toll to 20,642.

According to the Union Health Ministry, Maharashtra continues to be the worst affected state reporting 2,17,121 coronavirus cases and 9,250 fatalities.

Tamil Nadu -- the second worst-affected state from COVID-19 -- has a total of 1,18,594 cases and 1,636 deaths due to coronavirus.

While Delhi has a total of 1,02,831 COVID-19 cases including 3,165 deaths.

The Indian Council of Medical Research on Wednesday informed that a total of 1,04,73,771 samples tested for COVID-19 up to July 7. Of these, 2,62,679 samples were tested on Tuesday.

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News Network
June 25,2020

New Delhi, Jun 25: India registered its worst single-day increase in COVID-19 cases on Thursday, recording more than 16,000 coronavirus infections, to push the overall tally to 4.73 lakh as the number of fatalities also jumped by 418, the Union Health Ministry said.

This was the sixth consecutive day when coronavirus cases increased by more than 14,000. On June 20, the country registered an increase of 14,516 cases. On June 21, the increase was of 15,413 cases; 14,821 cases on June 22; 14,933 cases on June 23; and 15,968 cases on June 24.

Consequently, India added 92,573 cases since June 20, and over 2.82 lakh this month since June 1.

The health ministry data updated at 8am on Thursday showed the daily tally increased by the highest-ever 16,922 cases to reach 4,73,105, while the total deaths climbed to 14,894 with 418 new fatalities.

However, according to the data, the recovery rate has improved to 57.43 per cent. The number of active cases stands at 1,86,514 while 2,71,696 people have recovered; one patient has migrated.

The total number of confirmed cases included foreigners.

According to ICMR, a total of 75,60,782 samples have been tested up to June 24 with 2,07,871 samples being tested on Wednesday.

Of the 418 new deaths, 208 were in Maharashtra, 64 in Delhi, 33 in Tamil Nadu, 25 in Gujarat, 14 in Karnataka, 11 in West Bengal, 10 each in Rajasthan and Haryana, nine in Madhya Pradesh, eight each in Uttar Pradesh and Punjab, five each in Andhra Pradesh, Telangana and Uttarakhand.

Bihar, Goa and Jammu and Kashmir have reported one COVID-19 fatality each.

Of the total fatalities, Maharashtra tops the tally with 6,739 deaths followed by Delhi (2,365), Gujarat (1,735), Tamil Nadu (866), Uttar Pradesh (596), West Bengal (591), Madhya Pradesh (534), Rajasthan (375) and Telangana (225).

The COVID-19 death toll reached 188 in Haryana, 164 in Karnataka, 124 in Andhra Pradesh, 113 in Punjab, 88 in Jammu and Kashmir, 57 in Bihar, 35 in Uttarakhand, 22 in Kerala and 17 in Odisha.

Chhattisgarh has registered 12 deaths, Jharkhand 11, Assam and Puducherry nine each, Himachal Pradesh eight, Chandigarh six, Goa two and Meghalaya, Tripura and Ladakh have reported one fatality each.

More than 70 per cent deaths took place due to comorbidities, the health ministry said.

Maharashtra has reported the highest number of cases at 1,42,900 followed by Delhi at 70,390, Tamil Nadu at 67,468, Gujarat at 28,943, Uttar Pradesh at 19,557, Rajasthan at 16,009 and West Bengal at 15,173, according to ministry data.

The number of COVID-19 cases has gone up to 12,448 in Madhya Pradesh, 12,010 in Haryana, 10,444 in Telangana,10,331 in Andhra Pradesh and 10,118 in Karnataka.

It has risen to 8,209 in Bihar, 6,422 in Jammu and Kashmir, 6,198 in Assam and 5,752 in Odisha. Punjab has reported 4,627 novel coronavirus infections so far, while Kerala has 3,603 cases.

A total of 2,623 people have been infected by the virus in Uttarakhand, 2,419 in Chhattisgarh, 2,207 in Jharkhand, 1,259 in Tripura, 970 in Manipur, 951 in Goa, 941 in Ladakh and 806 in Himachal Pradesh.

Puducherry has recorded 461 COVID-19 cases, Chandigarh has 420, Nagaland has 347, Arunachal Pradesh has 158 and Mizoram has 142 cases.

Dadra and Nagar Haveli and Daman and Diu together have reported 120 COVID-19 cases.

Sikkim has 84, Andaman and Nicobar Islands has registered 56 infections so far while Meghalaya has recorded 46 cases.

"Our figures are being reconciled with the ICMR (Indian Council of Medical Research)," the ministry said, adding 8,493 cases are being reassigned to states.

State-wise distribution is subject to further verification and reconciliation, it added.

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News Network
February 14,2020

Feb 14: India will never forget the martyrdom of the security personnel killed in last year's Pulwama attack, Prime Minister Narendra Modi said on Friday.

He termed the slain security personnel were "exceptional individuals" who devoted their lives to serving and protecting the nation.

On February 14 last year, a convoy of vehicles carrying security personnel on the Jammu-Srinagar National Highway was attacked by a vehicle-borne suicide bomber at Lethpora in Pulwama district of Jammu and Kashmir. Forty Central Reserve Police Force (CRPF) personnel were killed in the attack.

"Tributes to the brave martyrs who lost their lives in the gruesome Pulwama Attack last year. They were exceptional individuals who devoted their lives to serving and protecting our nation. India will never forget their martyrdom," tweets PM Modi one year since the Pulwama attack.

"I pay homage to the martyrs of Pulwama Attack. India will forever be grateful of our bravehearts and their families who made supreme sacrifice for the sovereignty and integrity of our motherland," tweets Union Home Minister Amit Shah.

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