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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February 17,2020

Mumbai, Feb 17: The Shiv Sena on Monday said the ongoing preparation for the much awaited visit of US President Donald Trump is a reflection of the "slave mentality" of Indians.

Trump's India trip is like the visit of a "Badshah" (emperor), an editorial in Sena mouthpiece 'Saamana' said.

Taking a dig at the construction of a wall on a plot having several slum structures in Ahmedabad ahead of Trump's visit there, the Sena said the US president's trip would neither stop the fall of rupee's value in forex market nor offer betterment to those (slum dwellers) behind the wall.

"Before Independence, British King or Queen used to visit one of their slave nations like India. The kind of preparations going on from taxpayers' money for the arrival of Trump is similar to it. This reflects the slave mentality of Indians," it said.

The Sena also took a swipe at Prime Minister Narendra Modi over the Ahmedabad Municipal Corporation's (AMC) move to build wall on a plot to "hide the slums" on the route through which Trump's convoy would pass.

"Former prime minister Indira Gandhi had once given the slogan 'Garibi Hatao', which was ridiculed for a long time. It seems now Modi's plan is 'Garibi chupao' (hide poverty)," the Marathi publication said.

Is there any financial allocation for such a wall being built in Ahmedabad? Is the US going to offer loan to India to build such walls across the country? it wondered.

"We have heard Trump is going to be in Ahmedabad for only three hours but the wall construction is costing almost Rs 100 crore to the state exchequer," it said.

It is basically a political arrangement between Prime Minister Modi and US President Trump, the Sena claimed.

Last year, 'Howdy, Modi!' (a mega event jointly addressed by the Indian prime minister and Trump) was organised in the US, it noted.

A similar programme, "Kem Chho Trump" (Gujarati expression for how are you Trump), has been now organised (in Ahmedabad) ahead of the US elections, chiefly because of a sizable number of Gujarati people living in America, the Shiv Sena claimed.

"But this visit of President Trump is neither going to stop further fall of rupee in the forex market nor offer betterment to those behind the wall (being built in front of slums in Ahmedabad)," it said.

The Sena said Trump is "not someone very wise or a statesman or someone who cares for the whole world", but he has to be treated with respect as he represents the mighty US.

"Sometimes you have to treat someone with respect to get your things done," it quipped.

The AMC on Friday said the construction of the wall, around four feet in height, was approved much before Trump's Gujarat visit was finalised.

Trump is scheduled to visit Modi's home state Gujarat on February 24.

He will visit the famous Sabarmati Ashram in Ahmedabad and take part in a roadshow with Modi. After that, the two leaders will inaugurate a new cricket stadium in Motera and address a gathering there, with an expected audience of over a lakh people.

While it was earlier speculated that the programme would be called 'Kem Chho Trump', the Ahmedabad Municipal Corporation on Sunday tweeted a series of posters confirming that the event is now christened as 'Namaste Trump', apparently to give it a pan-India appeal.

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May 7,2020

May 7: India is projected to record the highest number of births in the 9 months since COVID-19 was declared a pandemic in March, with more than 20 million babies expected to be born in the country between March and December, according to top UN body.

The United Nations Children's Fund (UNICEF) warned that pregnant mothers and babies born during the pandemic across the world were threatened by strained health systems and disruptions in services.

An estimated 116 million babies will be born under the shadow of COVID-19 pandemic, UNICEF said on Wednesday, ahead of Mother's Day, observed on May 10.

These babies are projected to be born up to 40 weeks after COVID-19 was recognised as a pandemic on March 11.

The highest numbers of births in the 9 months since the pandemic was declared are expected to occur in India, where 20.1 million babies are projected to be born between March 11 and December 16. Other countries with the expected highest numbers of births during this period are China (13.5 million), Nigeria (6.4 million), Pakistan (5 million) and Indonesia (4 million), it said.

"Most of these countries had high neonatal mortality rates even before the pandemic and may see these levels increase with COVID-19 conditions," UNICEF said.

It is estimated that there will be 24.1 million births in India for the January-December 2020 period.

UNICEF warned that COVID-19 containment measures can disrupt life-saving health services such as childbirth care, putting millions of pregnant mothers and their babies at great risk.

Even wealthier countries are affected by this crisis. In the US, the sixth-highest country in terms of the expected number of births, over 3.3 million babies are projected to be born between March 11 and December 16.

"New mothers and newborns will be greeted by harsh realities," UNICEF said, adding they include global containment measures such as lockdowns and curfews; health centres overwhelmed with response efforts; supply and equipment shortages; and a lack of sufficient skilled birth attendants as health workers, including midwives, are redeployed to treat COVID-19 patients.

"Millions of mothers all over the world embarked on a journey of parenthood in the world as it was. They now must prepare to bring a life into the world as it has become – a world where expecting mothers are afraid to go to health centres for fear of getting infected, or missing out on emergency care due to strained health services and lockdowns," UNICEF Executive Director Henrietta Fore said.

"It is hard to imagine how much the coronavirus pandemic has recast motherhood" Fore said.

UNICEF said its analysis was based on data from World Population Prospects 2019 of the UN Population Division.

An average full-term pregnancy typically lasts a complete 9 months, or 39 to 40 weeks. For the purposes of this estimate, the number of births for a 40-week period in 2020 was calculated.

The 40-week period of March 11 to December 16 is used in this estimate based upon the WHO's March 11 assessment that COVID-19 can be characterised as a pandemic.

UNICEF warned that although evidence suggests that pregnant mothers are not more affected by COVID-19 than others, countries need to ensure they still have access to antenatal, delivery and postnatal services.

Similarly, sick newborns need emergency services as they are at high risk of death. New families require support to start breastfeeding, and to get medicines, vaccines and nutrition to keep their babies healthy, it said.

"This is a particularly poignant Mother's Day, as many families have been forced apart during the coronavirus pandemic, but it is also a time for unity, a time to bring everyone together in solidarity. We can help save lives by making sure that every pregnant mother receives the support she needs to give birth safely in the months to come," Fore said.

Issuing an urgent appeal to governments and health care providers to save lives in the coming months, UNICEF said efforts must be made to help pregnant women receive antenatal checkups, skilled delivery care, postnatal care services, and care related to COVID-19 as needed.

Ensure health workers are provided with the necessary personal protective equipment and get priority testing and vaccination once a COVID-19 vaccine becomes available so that can deliver high quality care to all pregnant women and newborn babies during the pandemic, it said.

While it is not yet known whether the virus is transmitted from a mother to her baby during pregnancy and delivery, UNICEF advised all pregnant women to follow precautions to protect themselves from exposure to the virus.

Closely monitor themselves for symptoms of COVID-19 and seek advice from the nearest designated facility if they have concerns or experience symptoms. Pregnant women should also take the same precautions to avoid COVID -19 infection as other people: practice physical distancing, avoid physical gatherings and use online health services, it said.

UNICEF said even before COVID-19 pandemic, an estimated 2.8 million pregnant women and newborns died every year, or 1 every 11 seconds, mostly of preventable causes.

The agency called for immediate investment in health workers with the right training, who are equipped with the right medicines to ensure every mother and newborn is cared for by a safe pair of hands to prevent and treat complications during pregnancy, delivery and birth.

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February 1,2020

Feb 1: The Congress on Saturday expressed hope that the Union Budget would provide relief to the salaried class through tax cuts and invest in rural India besides providing a healing touch to the common man and industry facing “hardship” since demonetisation.

Congress chief spokesperson Randeep Surjewala said the last budget led to crashing consumption levels, soaring unemployment and falling GDP. “Budget 2019= Consumption crashed, Unemployment soared, Farm distress surged, Incomes declined, Investments slumped, Public spending fell, GDP nose dived!,” Surjewala tweeted. “Yet, Modiji gave Corporate Tax Cuts of Rs 1,45,000 crore. Let Budget 2020 give tax cuts to Salaried Class and invest in Rural India,” he said

Rajasthan Chief Minister Ashok Gehlot hoped the budget fulfils expectations of the common people. “Budget 2020 is the time for NDA government to provide a healing touch to common people and industries facing hardships since noteban. Hope the budget fulfils expectations of common people and provide relief across sections,” Gehlot said.

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