Scientists release first-ever picture of a black hole

Agencies
April 10, 2019

Washington, Apr 10: Scientists released the much-awaited first direct image of a massive black hole at the centre of Messier 87, a galaxy which is about 54 million light-years away, at the National Press Club here on Wednesday. 

The image has been taken by the Event Horizon Telescope (EHT), which is a network of 10 radio telescopes spread across the planet, according to The Washington Post. The telescope functioned as if it is a single receiver, tuned to high-frequency radio waves, to take the image. 

The picture - released at six simultaneous news conferences on Wednesday - shows the event horizon, which is the boundary between light and dark around a black hole. A doughnut-like body can be seen in the portrait, which scientists say is the dark silhouette of the black hole against the hot, glowing material that surrounds it. 

"We are able to image one more object in the universe that ... at one point people thought could not be possible. It hits that human explorer spirit. We got another look into the unknown," Feryal Ozel, a member of the science council for the EHT said, calling the occasion her career's highlight.
 
The shape of the black hole matches what theorists had predicted ever since they started wrestling with Albert Einstein, General Theory of Relatively over a hundred years ago, reports The Washington Post. 

The European Commission hailed the occasion as a "paradigm shift" adding, "This major scientific achievement marks a paradigm shift in our understanding of black holes, confirms the predictions of Albert Einstein's General Theory of Relativity and opens up new lines of enquiry into our universe."

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News Network
April 25,2024

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Kolkata: Defence Minister Rajnath Singh or Transport Minister Nitin Gadkari could have been the prime minister, said Trinamool Congress supremo and West Bengal chief minister Mamata Banerjee, subtly taking a dig at the Bharatiya Janata Party leaders relegated to the second rung of the organisational echelons.

Banerjee’s nephew and the TMC general secretary Abhishek Banerjee, on the other hand, attempted to stoke trouble within the BJP’s unit in West Bengal, saying that at least 10 more state legislators of the saffron party were keen to join his party and in touch with him.

"You (Rajnath Singh) are surviving at the mercy of Modi (Prime Minister Narendra Modi). You are saluting Modi daily to save your chair. You or Nitin Gadkari could have been the PM (prime minister) today," the TMC supremo said in an election rally at Ausgram in Bolpur Lok Sabha constituency on Wednesday. "There would have been no problem...at least there would have been a gentleman in the chair who knows minimum courtesy," she added.

Banerjee was responding to Singh’s diatribe against herself and the TMC government led by her. The defence minister, who had addressed an election rally in Murshidabad on Sunday, had criticised the TMC government for alleged corruption and anarchy in West Bengal.

Singh had referred to the attacks on the Enforcement Directorate officials on January 5 during a raid at the residence of the TMC leader Sheikh Shahjahan at Sandeshkhali in North 24 Parganas district of the state. It was followed by an agitation by local women protesting against atrocities by Shahjahan and his aides known to be owing allegiance to the TMC.

Singh questioned how the state government, led by a woman as the chief minister, could allow such atrocities on women to take place. He went on to say that Banerjee had lost all ‘mamata’ (affection and compassion) for people.

Banerjee shared a cordial relationship with Singh since the days when they both were ministers in the central government led by then Prime Minister Atal Bihari Vajpayee. Singh avoided personally criticising Banerjee in the past.

He, however, went ballistic against Banerjee on Sunday, triggering a strong response from the TMC supremo on Wednesday.

"The BJP is trying to get into the game of breaking parties, but they can't win in it. They poached two of our MPs, and we replied by taking two of their MPs, Arjun Singh and Babul Supriyo. Recently, by using ED raids, they inducted Tapas Ray. At least 10 top leaders of the BJP are in the queue to join the TMC," Abhishek said in another election rally in Murshidabad on Wednesday.

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News Network
April 13,2024

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Mysuru, Apr 13: Karnataka Chief Minister Siddaramaiah said that Prime Minister Narendra Modi, who will be visiting Mysuru on Sunday, is welcome in the state.

"Let him come and go. He is the PM. But he should tell people about what he has done to the people of Karnataka. Let him answer about the injustice done by the Union Government towards the state in terms of giving tax share, not releasing drought relief funds yet and also about the unemployment issue," he said.

The Chief Minister was speaking to media people near his residence at Sharadadevi Nagar in Mysuru on Saturday.

Reacting to a question on BJP's slogan, 'Teesri Baar Modi Sarkar, Ab Ki Baar Char Sau Paar' (Modi government for the third time with over 400 seats), CM Siddaramaiah said, "This slogan is only a strategy to divert the minds of people. Because, according to me, the NDA will not get an absolute majority/simple majority this time in the Parliament elections."

"I.N.D.I.A. bloc and the parties which are against BJP will get a majority in the Lok Sabha polls," he said.

Responding to the statement of BJP leaders that 'even if B R Ambedkar comes, the Indian Constitution cannot be changed', Siddaramaiah said, "BJP is always against the Indian Constitution. Savarkar and the second Chief of RSS M S Golwalkar both opposed the Indian Constitution written by Baba Saheb B R Ambedkar on January 26, 1950."

"When BJP MP Ananth Kumar Hegde spoke about changing the Indian Constitution twice, why wasn't he punished? Why wasn't he suspended from the party? Why didn't they drop him from the cabinet?"

"Hegde was not given a ticket for the LS polls, as he had not done any work in the five years and was only active for the last three-four months of his term. The reason Hegde was not given a ticket was because BJP had realised that he would lose the elections, and not because of his statement related to the Constitution" the Chief Minister said.

Meanwhile, regarding the nabbing of the two key suspects in the Rameshwaram Cafe blast case in Bengaluru, Siddaramaiah said, "I thank the National Investigation Agency (NIA) and also the Karnataka police for tracing and arresting the accused in the case, in Kolkata."

"They will be brought to Bengaluru and further information related to the case will be known after their interrogation," he said.

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News Network
April 15,2024

New Delhi: India is likely to experience above-normal cumulative rainfall in the 2024 monsoon season with La Nina conditions likely to set in by August-September, the IMD has said on Monday.

However, normal cumulative rainfall does not guarantee uniform temporal and spatial distribution of rain across the country, with climate change further increasing the variability of the rain-bearing system.

Climate scientists say the number of rainy days is declining while heavy rain events (more rain over a short period) are increasing, leading to frequent droughts and floods.

Based on data between 1951-2023, India experienced above-normal rainfall in the monsoon season on nine occasions when La Nina followed an El Nino event, India Meteorological Department chief Mrutyunjay Mohapatra told a press conference here.

Positive Indian Ocean Dipole conditions are predicted during the monsoon season. Also, the snow cover in the Northern Hemisphere is low. These conditions are favourable for the Indian southwest monsoon, he said.

Moderate El Nino conditions are prevailing at present. It is predicted to turn neutral by the time monsoon season commences. Thereafter, models suggest, La Lina conditions may set in by August-September, Mohapatra said.

India received "below-average" cumulative rainfall -- 820 mm compared to the long-period average of 868.6 mm -- in 2023, an El Nino year. Before 2023, India recorded "normal" and "above-normal" rainfall in the monsoon season for four years in a row.

El Nino conditions -- periodic warming of surface waters in the central Pacific Ocean -- are associated with weaker monsoon winds and drier conditions in India.

Three large-scale climatic phenomena are considered for forecasting monsoon season rainfall.

The first is El Nino, the second is the Indian Ocean Dipole (IOD), which occurs due to differential warming of the western and eastern sides of the equatorial Indian Ocean, and the third is the snow cover over the northern Himalayas and the Eurasian landmass, which also has an impact on the Indian monsoon through the differential heating of the landmass.

The southwest monsoon delivers about 70 percent of India's annual rainfall, which is critical for the agriculture sector. Agriculture accounts for about 14 percent of the country's GDP.

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