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
August 2,2020

New Delhi, Aug 2: India's COVID-19 tally crossed the 17 lakh mark with 54,736 positive cases and 853 deaths reported in the last 24 hours.

"The total COVID-19 cases stand at 17,50,724 including 5,67,730 active cases, 11,45,630 cured/discharged/migrated and 37,364 deaths," said the Union Health and Family Welfare Ministry.

As per the data provided by the Health Ministry, Maharashtra -- the worst affected state from the infection -- has a total of 1,49,214 active cases and 15,316 deaths. A total of 4,31,719 coronavirus cases have been recorded in the state up to Saturday, as per the state health department.

Tamil Nadu has a total of 60,580 active cases and 4,034 deaths.

In Delhi, the total cases rose to 1,36,716, including 1,22,131 recovered/discharged/migrated cases and 3,989 deaths. There are 10,596 active cases in the national capital.

The total number of COVID-19 samples tested up to August 1 is 1,98,21,831 including 4,63,172 samples tested yesterday, said the Indian Council of Medical Research (ICMR) on Sunday.

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News Network
May 7,2020

Dubai, May 7: As India begins the world’s largest evacuation mission by repatriating its overseas citizens stranded due to COVID-19, as many as 354 of them from the UAE will fly into their home country in the first two flights to Kerala today.

An Air India Express flight, which is scheduled to take off from Abu Dhabi to Kochi at 4.15 pm is the first flight, which will be followed by a Dubai-Kozhikode flight of the same airline at 5.10pm. The Indian missions in the UAE finalised the list of passengers, who were chosen based on the compelling reasons they submitted while registering their names.

Selection criteria

These include pregnant women and their accompanying family members in some instances, people with medical emergencies, workers and housemaids in distress, families with cancelled visas, bereaved family members who couldn’t attend funerals back home, a few students and stranded visitors and tourists including two brothers who got stranded in Dubai International Airport for 50 days, the missions said.

Short-listing the first passengers from among a database of more than 200,000 applicants, who include around 6,500 pregnant women, has been a mammoth task which posed several challenges for the missions, Neeraj Agrawal, Consul Press, Information and Culture at the Indian Consulate in Dubai told Gulf News.

He said the consulate set up an operations room in a tie-up with community volunteers from Kerala Muslim Cultural Centre, Indian Association Ajman, AKCAF Task Force, the BAPS Mandir, Indian People’s Forum, and Tamil Ladies’ Sangam.

 “We are trying to accommodate as many deserving people as possible. We expect the understanding of the people. It has been very difficult to sort out everyone’s urgency.”

“We cannot do a lottery system in this and we had to make sub- categories to ensure there is a mix of people with different types of urgencies.”

“Though we want to give priority to pregnant women, it is practically not possible and not good for the health and safety of the applicants to allot a lot of them on the same flight.”

He said 11 pregnant women have been issued tickets on the Dubai-Kozhikode flight.

“That is the threshold we can allow on a flight.”

Volunteer support

The consul appreciated the support of the volunteers in finalising the flight manifest.

“But our response ratio was very less. Many people whose names came up on top of the list were not willing to go on the first flights.”

Due to various constraints like this and sometimes the details of accompanying persons not readily being available, he said the mission was not able to quickly reach out to who might be really in need.

“However, we have given due consideration to people who got in touch with us with their emergency needs. At the time of issuing tickets, we had about 20 such cases.”

He said the Consul General of India in Dubai Vipul led the entire operation and Pankaj Bodkhe, consul, education, was in charge of the Dubai flight.

A big challenge

“It has been a big challenge. Our only concern is that despite our best efforts, sometimes people with more compelling reasons might have got left out on the first flights because of the volume of people who have reached out to us.”

Since there is a chance that some passengers with tickets might not be allowed to fly if they fail the medical screening including blood tests to check antibodies for COVID-19, he said some applicants in the waiting list have been asked to be on standby at the airport.

People with emergencies wishing to fly to other destinations also could not be included, he pointed out.

“We had to ask them to wait. We are unable to send them to other destinations. We can see their desperation. We feel sorry and desperate.”

He said the government is trying to add more flights to un-chartered destinations and a new flight from Dubai to Kannur has been added on May 12.

Passengers of today’s flights have been urged to reach the airport four to five hours prior to departure to facilitate the medical screening.

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coastaldigest.com web desk
August 1,2020

New Delhi, July 1: In a terrific incident with chilling echoes of the 2015 Dadri mob lynching, a Muslim man, who was carrying meat, was savagely attacked by a mob belonging to a saffron outfit in the presence of in BJP ruled Haryana on the eve of Eid al-Adha. 

The incident occurred at around 9 a.m. on Friday, July 31 at Badshahpur village in Haryana’s Gurgaon, when Lukman was transporting meat in a pic-kup truck. 

The attack was captured on mobile phones by onlookers and the video clips of the incident are now spreading on social media. 

A group of saffronite cow vigilantes chased the truck for about 8 km managed waylay it. Lukman, who was driving the truck was pulled out and brutally assaulted on the suspicion that he was transporting cow meat.

Just like Dadri, the police were faster at sending the meat to a lab for testing than catching any one of the suspects. One of the assailants - Pradeep Yadav- has been arrested. 

After being beating to an inch of his life, Lukman was bundled into the pick-up truck and taken back to Gurgaon's Badshahpur village where the goons started thrashing him again.

This is when the police stepped in and stopped them - only to find the assailants fearless enough to even take on them.

Lukman was taken to a hospital and the police filed a case against "unidentified individuals" even though the video of the incident recorded by witnesses shows the faces of the assailants.

The owner of the vehicles said that the meat was buffalo and he has been in the business for 50 years.

The police have so far refused to give a statement on record on the incident and explain their inaction as seen on video.

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