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 21,2020

New Delhi, Jul 21: The Centre has written to all states and union territories warning against the use of N-95 masks with valved respirators by people, saying these do not prevent the virus from spreading out and are "detrimental" to the measures adopted for its containment.

The Director General of Health Services (DGHS) in the Ministry of Health, in a letter to the Principal Secretaries of health and medical education of states, said it has been observed that there is "inappropriate use" of N-95 masks, particularly those with valved respirators, by the public other than designated health workers.

The DGHS referred to the advisory on the use of homemade protective cover for face and mouth available on the website of the Ministry of Health.

"It is to bring to your knowledge that the use of valved respirator N-95 masks is detrimental to the measures adopted for preventing the spread of coronavirus as it does not prevent the virus from escaping out of the mask. In view of the above, I request you to instruct all concerned to follow the use of face/mouth cover and prevent inappropriate use of N-95 masks," DGHS Rajiv Garg said in the letter.

The government had in April issued an advisory on the use of homemade protective cover for face and mouth, asking people to wear it, particularly when they step out of their residences.

The advisory stressed such face covers must be washed and cleaned each day, as instructed, and stated that any used cotton cloth can be used to make this face cover.

The colour of the fabric does not matter but one must ensure that the fabric is washed well in boiling water for five minutes and dried well before making the face cover. Adding salt to this water is recommended, it said.

It also listed the procedures of making such homemade masks, asking to ensure it fits the face well and there are no gaps on the sides.

It urges people to wash hands thoroughly before wearing the face cover, switching to another fresh one as the face cover becomes damp or humid, and never reusing it after single use without cleaning it.

"Never share the face cover with anyone. Every member in a family should have separate face cover," the advisory stated.

India's COVID-19 case tally crossed the 11-lakh mark on Monday, while the total number of recovered patients increased to over seven lakh, according to Union health ministry data.

The death toll due to the disease rose to 27,497 with 681 fatalities reported in one day.

The ministry data updated at 8 am on Monday showed that a record single-day jump of 40,425 COVID-19 cases had taken the total number of cases to 11,18,043.

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News Network
May 1,2020

Jeddah, May 1: The government of India and its diplomatic missions in the Gulf Cooperation Council (GCC) States have begun elaborate preparations for the massive evacuation of their nationals stranded or needing to return once the lockdown travel restrictions are lifted.

The Indian missions in Saudi Arabia, the United Arab Emirates (UAE), Kuwait, Bahrain, Oman and Qatar have started registration for the return of their nationals. The move coincides with the directive of New Delhi to the Indian Air Force and Navy to get their big engines ready to bring back citizens stuck in the GCC states.

India’s External Affairs Minister S. Jaishankar has stated that the Indian missions in the GCC states have been liaising with local authorities for repatriation of Indians. More than eight millions Indians work and live in the Gulf countries.

The Indian Embassy in Saudi Arabia said that it has issued directives to their nationals who seek repatriation to India to fill an application form so as to facilitate their travel when the authorities lift the travel restrictions. Similar advisories have also been issued by the embassies in other Gulf States.

The Riyadh Embassy said in a press statement that the purpose is only to collect data and no decision has been taken yet regarding resumption of flights to India.

The Embassy will make an announcement with regard to repatriation of Indian nationals when the government of India takes a decision in this regard, the statement said, adding that separate forms have to be filled for each individual, including Indian worker or his or her family members.

The Embassy is in the process of working out the modalities of evacuation of stranded Indians in line with the directions of the government of India, the statement pointed out.

The Embassy and the Consulate General in Jeddah are closely monitoring the situation and are taking all the required measures to ensure the welfare of Indian citizens.

The missions have taken all the necessary measures for the supply of food, medicines and other emergency assistance to Indians in need and that is in coordination and cooperation with volunteers of major community organizations across the Kingdom.

These initiatives have been accelerated following the interactions of Ambassador Dr. Ausaf Sayeed with community volunteers and social workers from all parts of the Kingdom. The Embassy has also been in touch with all major companies in the Kingdom that employed Indian workers to carry out regular monitoring of the workers’ health, especially in labor camps, and take all other precautionary and preventive measures to ensure their health and safety.

According to the plan drawn up by the government of India, the first commercial flights from the Gulf could start after May 3, if the nationwide lockdown restrictions are not extended.

INS Jalashwa, an amphibious assault ship, and two Magar class tank-landing ships are being readied for the evacuation purposes, India’s IANS reported.

These ships, which have a total capacity of 2,000 people, have started making arrangements as per the standard protocols laid out to deal with suspected coronavirus cases like social distancing and sanitization.

The Indian Air Force has been evacuating citizens from coronavirus hit countries such as China, Japan, Iran, Italy and Kuwait since January. The force has stated that it has kept C-17 Globemaster and C-130s on standby which can be used whenever they are required.

Apart from them, Air India flights are also being kept on standby to pick up stranded Indians from the GCC countries.

15 Indian fatalities in western region

Speaking to Saudi Gazette, Indian Consul General Mohammed Noor Rahman Sheikh said that as of Thursday a total of 15 Indian coronavirus fatalities were reported in the western region.

These included seven cases in Makkah, six in Madinah and two in Jeddah. Around 140 Indians have tested positive in the region where most of the coronavirus cases in the Kingdom have been reported.

He said that permission was not accorded from the Ministry of Haj and Umrah to use the Indian Haj mission facility in Makkah as the center to assist the community members with regard to the coronavirus related cases.

“Our medical in charge is in Makkah and with the support of some other staffers, he has been actively involved in lending a helping hand to those Indian nationals who are in distress,” he said.

“We are in regular contact with the Ministry of Health officials in ensuring quick medical assistance to those who are tested positive.” He said preparations are under way for repatriation of Indians once permission is ready to take them home. “We are maintaining a database of all those who contacted the consulate with a request for their repatriation,” he added.

Meanwhile, the bodies of two Indians from the southern state of Kerala who succumbed to the pandemic were buried in Makkah. Naletil Muhammad from Ancharakkandi of Kannoor district, a restaurant worker in Makkah, gave samples at King Faisal Hospital a few days ago after developing symptoms of the disease.

When the hospital authorities advised him to remain in medical isolation, he reportedly preferred to remain in isolation at his residence where he succumbed to the pandemic after a few days.

Muhammad’s two sons, who are working in Riyadh, alerted his colleagues when they failed to contact him over phone. They found him dead at his residence on Monday. Eventually, Ministry of Health officials sent all his six colleagues to medical isolation.

Kottuwala Ippu Musliyar from Thennala, Vengara in Malappuram district, was a well-known social worker in Makkah. He died of coronavirus at Hira Hospital on Wednesday after undergoing treatment for a couple of days.

Mujeeb Pukkottoor, a prominent Indian social worker and general secretary of Makkah chapter of Kerala Muslim Cultural Center, was authorized by their spouses to carry out their burial procedures.

Accordingly Muhammad was buried on Wednesday and Ippu Musliyar on Thursday at the designated area for the coronavirus deceased persons at Sharaie Cemetery in Makkah.

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Agencies
July 29,2020

New Delhi, Jul 29: Coronavirus infections in India continue to mount as the country's total case tally crossed the 15-lakh mark.

India added 48,513 fresh cases in 24 hours, taking the total tally to over 15.3 lakh, according to the Health Ministry’s 8 a.m. update on July 29.

Key Figures

Total number of confirmed coronavirus cases: 15,31,669
Active cases: 5,09,447
Cured/discharged/migrated: 9,88,029
Deaths: 34,193
Number of fresh cases in 24 hours: 48,513
One-day recoveries: 35,175
One-day deaths: 768
India’s coronavirus epidemic is growing at the fastest pace in the world, increasing 20% over the last week, according to Bloomberg’s Coronavirus Tracker. Maharashtra, Tamil Nadu, Andhra Pradesh and Karnataka are among the states where the maximum number of daily cares are being reported.

Fresh cases continued to come in at a heightened pace, hovering just below 50,000 for the last six days.

Moderna Inc.’s vaccine candidate against Covid-19 protected against the virus in a trial that inoculated 16 monkeys, an encouraging step on the path to a defense for humans against the pandemic. Pfizer Inc., however, is preparing for the novel coronavirus to endure, leading to long-term demand for a seasonal shot to protect against Covid-19.

“There is a likely scenario that either the vaccine’s immunity will not be lasting forever,” said Chief Executive Officer Albert Bourla in an interview Tuesday, “or that the virus will mutate, or that the virus will find ways to come back again and again.”

Even as the transmission rate of Covid-19 remains high in India, the pace of recovery has risen too. On Wednesday, India reported its third day of over 35,000 recoveries.

Global Update

Flare-ups in virus cases from Hong Kong to Europe are proving difficult for policy makers to wrangle. The U.S. neared 150,000 deaths from Covid-19, even as daily infections slowed in some hard-hit states. China reported 101 new cases, up from 68 a day earlier, with 98 of the total from local infections, mostly in Xinjiang.

Philippine health authorities warned that hospitals and infirmaries risk getting overwhelmed.

Globally, confirmed Covid-19 cases have topped 16.6 million with over 658,000 dead.

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