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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News Network
May 27,2020

Muzaffarpur, May 27: A toddler's vain attempt to wake up his dead mother from eternal sleep on a railway platform in Bihar's Muzaffarpur on Wednesday presented the most poignant picture of the massive migrant tragedy unfolding across several states.

A video tweeted by Sanjay Yadav, an aide to RJD leader Tejashwi Yadav, shows the child walking unsteadily up to his mother's body, tugging at the blanket placed over her, and when failing to wake her up, covering his own head with it.

As the mother still lay still, he wobbles away from her, announcements continuing in the background about the arrival and departure of trains that would bring in tens of thousands of people in a rush to get away from hunger and hardship they face in large cities that could sustain them no more.

"This small child doesn't know that the bedsheet with which he is playing is the shroud of his mother who has gone into eternal sleep. This mother died of hunger and thirst after being on a train for four days. Who is responsible for these deaths on trains? Shouldn't the opposition ask uncomfortable questions?" tweeted Yadav.

However, police had a different story to tell.

Ramakant Upadhyay, the Dy SP of the Government Railway Police in Muzaffarpur, said the incident occurred on May 25 when the migrant woman was on way to Muzaffarpur from Ahmedabad by a Shramik Special train.

He told reporters the woman, who was accompanied by her sister and brother-in-law, had died on the Madhubani bound train.

"My sister-in-law died suddenly on the train. We did not face any problem getting food or water," the officer said, quoting the deceased's brother-in-law who he did not name.

He said on getting information, poice brought down the body and sent it for postmortem.

Citing the brother-in-law of the deceased, Upadhyay said she was aged 35 years and was undergoing treatment for "some disease" for the last one year in Ahmedabad. "She was also mentally unstable," he said.

When persistently queried about the cause of death, he said,"Only doctors can tell".

A massive exodus of migrant workers is on in several parts of the country, unprecedented in magnitude since Partition.

The humanitarian crisis still unfolding on highways and railway platforms has shone light on disturbing tales of entire families walking hundreds of kilometres with little children on foot in a seemingly endless march to escape hunger.

People have been found travelling on trucks and in the hollow of concrete mixing plants, and in many cases, dying from hunger and exhaustion before reaching their destinations.

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News Network
March 5,2020

Bharuch, Mar 5: Vijay Kumar, a resident of the Tamil Nadu has sought help from his friend Abdulkhuda Mohd Hanif Shaikh who is residing in Gujarat to build a temple in his village.

Abdulkhuda Mohd Hanif Shaikh, who also belongs to Tamil Nadu's Paraipatti village and has been residing in Gujarat' Bharuch for a decade has collected Rs 3 lakh from his friends as a donation to build the temple in Paraipatti village in Dindigul district.

"They'd told me 4 months ago and came to me 10 days back. From Vapi to Mehsana, there are several Madrasis, even here in the village too. I personally went to them and collected around Rs 3 Lakh," Shaikh said.

Vijay Kumar said that he stayed in Gujarat for ten days and collected Rs 3 Lakh with him.

"I had sought help from him. I stayed here in Gujarat for 10 days, and went with him from people to people and collected Rs 3 Lakh. No one lives like Hindus or Muslims in our village, everyone lives like friends," he said.

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News Network
May 21,2020

United Nations, May 21: At least 19 million children in parts of Bangladesh and India are at "imminent risk" from flash flooding and heavy rain as Cyclone Amphan makes landfall and the state of West Bengal is expected to take a direct hit from the powerful storm, the UN's children agency has warned.

The extremely severe cyclonic storm Amphan made a landfall at Digha in West Bengal and Bangladesh on Wednesday, leaving a trail of destruction. At least three persons were killed in India and seven in Bangladesh.

The UNICEF said that at least 19 million children in parts of Bangladesh and India are at “imminent risk from flash flooding, storm surges and heavy rain as Cyclone Amphan makes landfall.”

West Bengal, “home to more than 50 million people, including over 16 million children, is expected to take a direct hit from the powerful storm,” the UN agency said in a statement on Wednesday.

The UNICEF said it is also very concerned that the COVID-19 could deepen the humanitarian consequences of Cyclone Amphan in both the countries. Evacuees who have moved to crowded temporary shelters would be especially vulnerable to the spread of respiratory diseases like COVID-19, as well as other infections.

“We continue to monitor the situation closely,” said UNICEF Regional Director for South Asia Jean Gough.

“The safety of children and their families in the areas that will be impacted is a priority and it is good to see that the authorities have planned their urgent response factoring in the on-going COVID-19 pandemic.”

Across the region, the UNICEF is “working closely with the governments of Bangladesh and India and stands ready to support humanitarian operations to reach children and families affected by Cyclone Amphan.”

Based on the storm’s current trajectory, Cox’s Bazar in Bangladesh – now sheltering over 850,000 Rohingya refugees – is likely to experience high winds and heavy rains which may cause damage to homes and shelters in the refugee camps and Bangladeshi communities. This population is already highly vulnerable and cases of COVID-19 have recently been confirmed in the camps and host communities.

The UNICEF said it is working with the Deputy Commissioner’s Office in Cox’s Bazar, the Office of the Refugee Relief and Repatriation Commissioner, and humanitarian partners to help ensure Bangladeshi and Rohingya children and families remain protected.

These efforts include raising awareness among Rohingya and Bangladeshi communities on cyclone preparedness and prepositioning emergency life-saving water, sanitation, hygiene and medical supplies to meet immediate humanitarian needs.

Meanwhile, UN Secretary-General Antonio Guterres’ spokesperson Stephane Dujarric said at the daily press briefing that UN teams on the ground continue to work with the Government of Bangladesh to prepare and support those in need in the wake of the cyclone.

“Given the current pandemic, this support includes distributing personal protective equipment, disinfectants and other materials to evacuation shelters. To reduce the person-to-person contact during the delivery of aid, e-cash distributions will be used,” he said adding that the UN along with its partners is mobilising more than 1,700 mobile health teams and preparing for emergency food deliveries.

“The Super Cyclone is taking a westerly trajectory towards India, but nearly 8 million people in Bangladesh remain at risk,” he said adding that the Bangladesh government has evacuated more than 2 million people in high-risk areas. 

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