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
June 9,2020

Jun 9: Prime Minister Narendra Modi wants all 1.3 billion Indians to be “vocal for local” — meaning, to not just use domestically made products but also to promote them. As an overseas citizen living in Hong Kong, I’m doing my bit by very vocally demanding Indian mangoes on every trip to the grocery. But half the summer is gone, and not a single slice so far.

My loss is due to India’s COVID-19 lockdown, which has severely pinched logistics, a perennial challenge in the huge, infrastructure-starved country. But more worrying than the disruption is the fruity political response to it. Rather than being a wake-up call for fixing supply chains, the pandemic seems to be putting India on an isolationist course. Why?

Granted that the liberal view that trade is good and autarky bad isn’t exactly fashionable anywhere right now. What makes India’s lurch troublesome is that the pace and direction of economic nationalism may be set by domestic business interests. The Indian liberals, many of whom are Western-trained academics, authors and — at least until a few years ago — policy makers, want a more competitive economy. They will be powerless to prevent the slide.

Modi’s call for a self-reliant India has been echoed by Home Minister Amit Shah, the cabinet’s unofficial No. 2, in a television interview. If Indians don’t buy foreign-made goods, the economy will see a jump, he said. The strategy — although it’s too nebulous yet to call it that — has a geopolitical element. A military standoff with China is under way, apparently triggered by India’s completion of a road and bridge near the common border in the tense Himalayan region of Ladakh. It’s very expensive to fight even a limited war there. With India’s economy flattened by COVID, New Delhi may be looking for ways to restore the status quo and send Beijing a signal.

Economic boycotts, such as Chinese consumers’ rejection of Japanese goods over territorial disputes in the East China Sea, are well understood as statecraft. In these times, it’s not even necessary to name an enemy. An undercurrent of popular anger against China, the source of both the virus and India’s biggest bilateral trade deficit, is supposed to do the job. But is it ever that easy?

A hastily introduced policy to stock only local goods in police and paramilitary canteens became a farcical exercise after the list of banned items ended up including products by the local units of Colgate-Palmolive Co., Nestle SA, and Unilever NV, which have had significant Indian operations for between 60 and 90 years, as well as Dabur India Ltd., a New Delhi-based maker of Ayurveda brands. The since-withdrawn list demonstrates the practical difficulty of bureaucrats trying to find things in a globalized world that are 100% indigenous.

Free-trade champions fret that the prime minister, whom they saw as being on their side six years ago, is acting against their advice to dismantle statist controls on land, labor and capital to help make the country more competitive. Engage with the world more, not less, they caution. But Modi also has to satisfy the Rashtriya Swayamsevak Sangh, the umbrella Hindu organisation that gets him votes. Its backbone of small traders, builders and businessmen — the RSS admits only men — was losing patience with the anemic economy even before the pandemic. Now, they’re in deep trouble, because India’s broken financial system won’t deliver even state-guaranteed loans to them.

The U.S.-China tensions — over trade, intellectual property, COVID responsibility and Hong Kong’s autonomy — offer a perfect backdrop. A dire domestic economy and trouble at the border provide the foreground. Big business will dial economic nationalism up and down to hit a trifecta of goals: Block competition from the People's Republic; make Western rivals fall in line and do joint ventures; and tap deep overseas capital markets. The first goal is being achieved with newly placed restrictions on investment from any country that shares a land border with India. The second aim is to be realized by corporate lobbying to influence India's whimsical economic policies. As for the third objective, with the regulatory environment becoming tougher for U.S.-listed Chinese companies like Alibaba Group Holding Ltd., an opportunity may open up for Indian firms.

All this may bring India Shenzhen-style enclaves of manufacturing and trade, but it will concentrate economic power in fewer hands, something that worries liberals. They’re moved by the suffering of India’s low-wage workers, who have borne the brunt of the COVID shutdown. But when their vision of a more just society and fairer income distribution prompts them to make common cause with the ideological Left, they’re quickly repelled by the Marxist voodoo that all cash, property, bonds and real estate held by citizens or within the nation “must be treated as national resources available during this crisis.” Who will invest in a country that does that instead of just printing money?

At the same time, when liberals look to the business class, they see a sudden swelling of support for ideas like a universal basic income. They wonder if this isn’t a ploy by industry to outsource part of the cost of labor to the taxpayer. Slogans like Modi’s vocal-for-local stir the pot and thicken the confusion. The value-conscious Indian consumer couldn’t give two hoots for calls to buy Indian, but large firms will know how to exploit economic nationalism. One day soon, I’ll get my mangoes — from them.

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Agencies
May 17,2020

As millions of people get hooked to online dating platforms, their proliferation has led to online romance scams becoming a modern form of fraud that have spread in several societies along with the development of social media like Facebook Dating, warn researchers.

For example, extra-marital dating app Gleeden has crossed 10 lakh users in India in COVID-19 times while dating apps like Tinder and Bumble have gained immense popularity.

According to researchers from University of Siena and Scotte University Hospital led by Dr Andrea Pozza, via a fictitious Internet profile, the scammer develops a romantic relationship with the victim for 6-8 months, building a deep emotional bond to extort economic resources in a manipulative dynamic.

"There are two notable features: on the one hand, the double trauma of losing money and a relationship, on the other, the victim's shame upon discovery of the scam, an aspect that might lead to underestimation of the number of cases," the authors wrote in a paper published in the journal Clinical Practice & Epidemiology in Mental Health.

Around 1,400 dating sites/chats have been created over the last decade in North America alone. In the UK, 23 per cent of Internet users have met someone online with whom they had a romantic relationship for a certain period and even 6 per cent of married couples met through the web.

"The online dating industry has given rise to new forms of pathologies and crime, said the authors.

The results showed that 63 per cent of social media users and 3 per cent of the general population reported having been a victim at least once.

Women, middle-aged people, and individuals with higher tendencies to anxiety, romantic idealization of affective relations, impulsiveness and susceptibility to relational addiction are at higher risk of being victims of the scam.

Online romance scams are, in other words, relationships constructed through websites for the purpose of deceiving unsuspecting victims in order to extort money from them.

The scammer always acts empathetically and attempts to create the impression in the victim that the two are perfectly synced in their shared view of life.

"The declarations of the scammer become increasingly affectionate and according to some authors, a declaration of love is made within two weeks from initial contact," the study elaborated.

After this hookup phase, the scammer starts talking about the possibility of actually meeting up, which will be postponed several times due to apparently urgent problems or desperate situations such as accidents, deaths, surgeries or sudden hospitalizations for which the unwitting victim will be manipulated into sending money to cover the momentary emergency.

Using the strategy of "testing-the-water", the scammer asks the victim for small gifts, usually to ensure the continuance of the relationship, such as a webcam, which, if successful, leads to increasingly expensive gifts up to large sums of money.

When the money arrives from the victim, the scammer proposes a new encounter.

The request for money can also be made to cover the travel costs involved in the illusory meeting. In this phase, the victim may start having second thoughts or showing doubt about the intentions of the partner and gradually decide to break off the relationship.

"In other cases, the fraudulent relationship continues or even reinforces itself as the victim, under the influence of ambivalent emotions of ardor and fear of abandonment and deception, denies or rationalizes doubts to manage their feelings," said the study.

In some cases, the scammer may ask the victim to send intimate body photos that will be used as a sort of implicit blackmail to further bind the victim to the scammer.

Once the scam is discovered, the emotional reaction of the victim may go through various phases: feelings of shock, anger or shame, the perception of having been emotionally violated (a kind of emotional rape), loss of trust in people, a sensation of disgust towards oneself or the perpetrator of the crime and a feeling of mourning.

"Understanding the psychological characteristics of victims and scammers will allow at-risk personality profiles to be identified and prevention strategies to be developed," the authors suggested.

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News Network
June 26,2020

New Delhi, Jun 26: "Iam Indira Gandhi's granddaughter, not an undeclared BJP spokesperson like some of the opposition leaders," Congress general secretary Priyanka Gandhi Vadra on Friday said, as she alleged that the Uttar Pradesh government is threatening her through various departments for speaking the truth. Priyanka Gandhi's dare to the Uttar Pradesh government came days after the Agra administration asked her to withdraw within 24 hours the claim of high coronavirus deaths in the district.

The Congress general secretary in-charge UP East has accused the Yogi Adityanath government of indulging in propaganda instead of dealing with the pandemic. "As a public servant, my duty is towards the people of Uttar Pradesh. And this duty is to put out the truth before them and not to put forth government propaganda. The UP government is wasting its time by threatening me through its various departments," Priyanka Gandhi said in a tweet in Hindi.

"They can take whatever action they want, I will keep putting forth the truth. I am Indira Gandhi's granddaughter not an undeclared BJP spokesperson like some of the opposition leaders," she said. This week, Priyanka Gandhi repeatedly attacked the Uttar Pradesh government over the "high" COVID-19 mortality rate in Agra and on other issues related to the state government's handling of the pandemic.

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