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Indian astronomers discover a supercluster of galaxies, name it Saraswati

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Indian astronomers discover a supercluster of galaxies, name it SaraswatiIndian astronomers discover a supercluster of galaxies, name it Saraswati

[vc_row][vc_column][vc_column_text]A team of Indian astronomers have identified an extremely large supercluster of galaxies and have named it Saraswati.

This previously unknown, extremely large supercluster of galaxies, was discovered by a team of astronomers from the Inter University Centre for Astronomy & Astrophysics (IUCAA), and Indian Institute of Science Education and Research (IISER), both in Pune, India, and members of two other Indian universities. The team was led by Joydeep Bagchi from IUCAA, while others included Shishir Sankhyayan, a PhD student at IISER, Pratik Dabhade, an IUCAA research fellow, Joe Jacob of the Newman College, Kerala, and Prakash Sarkar of the National Institute of Technology, Jamshedpur.

The discovery comes close on the heels of another, reported on July 1, of “a large sample of giant radio galaxies” by the same institution. A six-member team of Indian astronomers led by Pratik Dabhade from IUCAA had reported the discovery of 25 extremely rare kind of galaxies called giant radio galaxies (GRGs), known to be the largest known galaxies in the universe. Bagchi was also part of the team.

Saraswati supercluster, located in the direction of constellation Pisces, is one of the largest known structures in the nearby Universe, and is at a distance of 4,000 million (400 crore) light-years away from us. Our own galaxy is part of a Supercluster called the Laniakea Supercluster, announced in 2014 by Brent Tully at the University of Hawaii and collaborators.

Superclusters are the largest coherent structures in the Cosmic Web. A Supercluster is a chain of galaxies and galaxy clusters, bound by gravity, often stretching to several hundred times the size of clusters of galaxies, consisting of tens of thousands of galaxies. The newly discovered ‘Saraswati’ supercluster, for instance, extends over a scale of 600 million light-years and may contain the mass equivalent of over 20 million billion suns. \

The Saraswati supercluster has a total of 43 clusters of galaxies. The typical size of a galaxy here is around 250,000 light years.

Two most massive clusters of galaxies in the Saraswati supercluster : “ABELL 2631” cluster (left) and “ZwCl 2341.1+0000” cluster (right). “ABELL 2631” resides in the core of the Saraswatisupercluster. The Saraswati supercluster has a total of 43 clusters of galaxies.

Two most massive clusters of galaxies in the Saraswati supercluster : “ABELL 2631” cluster (left) and “ZwCl 2341.1+0000” cluster (right). “ABELL 2631” resides in the core of the Saraswatisupercluster. The Saraswati supercluster has a total of 43 clusters of galaxies.

In a press statement, Joydeep Bagchi from IUCAA, the lead author of the paper and co-author Shishir Sankhyayan (PhD scholar at IISER, Pune) said, “We were very surprised to spot this giant wall-like supercluster of galaxies, visible in a large spectroscopic survey of distant galaxies, known as the Sloan Digital Sky Survey (see figure above). This supercluster is clearly embedded in a large network of cosmic filaments traced by clusters and large voids.”

Previously only a few comparatively large superclusters have been reported, for example the ‘Shapley Concentration’ or the ‘Sloan Great Wall’ in the nearby universe, while the ‘Saraswati’ supercluster is far more distant one. “Our work will help to shed light on the perplexing question; how such extreme large scale, prominent matter-density enhancements had formed billions of years in the past when the mysterious Dark Energy had just started to dominate structure formation,” said Bagchi.

“Saraswati” (or “Sarasvati”), a word that has proto-Indo-European roots, is a name found in ancient Indian texts to refer to the major river around which the people of the ancient Indian civilization lived. It is also the name of the celestial goddess who is the keeper of the celestial rivers. In modern India, Saraswati is worshipped as the goddess of knowledge, music, art, wisdom and nature – the muse of all creativity.

Their finding will be published in the latest issue of The Astrophysical Journal, one of the premier research journals of the American Astronomical Society.[/vc_column_text][/vc_column][/vc_row]

India News

Parliament winter session: Government lists 15 bills, including Waqf bill

The session will kick off on November 25 and conclude on December 20.

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The government has listed five new ones and one to amend the contentious Waqf law out of 15 bills for the winter session of Parliament. The session will kick off on November 25 and conclude on December 20.

The government has introduced five new bills, including the Coastal Shipping Bill, 2024, which aims to promote coasting trade and increase the participation of Indian-flagged vessels owned and operated by Indian citizens for both national security and commercial purposes.

Another significant legislation that will be introduced by the government is the Indian Ports Bill, 2024. This bill is designed to implement measures for the conservation of ports, enhance security, and manage pollution, ensuring compliance with India’s international obligations and statutory requirements.

Additionally, the government plans to introduce the Merchant Shipping Bill, 2024, which aims to meet India’s obligations under maritime treaties and support the development of Indian shipping while ensuring the efficient operation of the Indian mercantile marine in a way that serves national interests.

Pending legislation includes the Waqf (Amendment) Bill, which is awaiting consideration and passage after the joint committee of both Houses submits its report to the Lok Sabha. The committee is expected to report by the end of the first week of the winter session.

Currently, there are eight bills, including the Waqf (Amendment) Bill and the Mussalman Wakf (Repeal) Bill, pending in the Lok Sabha, while two additional bills are in the Rajya Sabha.

Furthermore, the government has also listed the Punjab Courts (Amendment) Bill for introduction, consideration, and passage, which seeks to increase the pecuniary appellate jurisdiction of Delhi district courts from Rs 3 lakh to Rs 20 lakh.

The Merchant Shipping Bill, along with the Coastal Shipping Bill and the Indian Ports Bill, is slated for introduction and eventual passage.

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International Criminal Court issues arrest warrant against Israel PM Benjamin Netanyahu over war crimes

The court accused Prime Minister Netanyahu and Defence Minister Gallant of crimes against humanity, including murder, persecution, inhumane acts, and the war crime of starvation as a method of warfare.

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International Criminal Court issues arrest warrant against Israel PM Benjamin Netanyahu over war crimes

The International Criminal Court (ICC) today issued arrest warrants for Israeli Prime Minister Benjamin Netanyahu and former Defence Minister Yoav Gallant over alleged war crimes and crimes against humanity.

The court accused Prime Minister Netanyahu and Defence Minister Gallant of crimes against humanity, including murder, persecution, inhumane acts, and the war crime of starvation as a method of warfare. The leaders allegedly restricted essential supplies such as food, water, and medical aid to civilians in Gaza, resulting in severe humanitarian crises and deaths, including among children.

Last year in October, Israel had launched attacks on Gaza in retaliation for the surprise attack by Hamas. The Israel-Hamas war has led to the death of thousands of civilians, while lakhs have been displaced. The major infrastructures in Gaza, including hospitals and schools, were also destroyed as Israel vowed to wipe out Hamas.

The International Criminal Court stated that it found reasonable grounds to believe the accused intentionally targeted civilians and limited medical supplies, forcing unsafe medical procedures, which caused immense suffering. This ruling was based on the findings from at least October 8, 2023 until at least May 20, 2024.

The court remarked that it has assessed that there are reasonable grounds to believe that PM Netanyahu and Defence Minister Gallant bear criminal responsibility as civilian superiors for the war crime of intentionally directing attacks against the civilian population of Gaza.

Furthermore, it also noted that the lack of food, water, electricity and fuel, and medical supplies created conditions of life calculated to bring about the destruction of part of the civilian population in Gaza, leading to death of civilians, including children due to malnutrition and dehydration.

Additionally, the International Criminal Court dismissed two challenges by Israel against its jurisdiction in the situation in the State of Palestine.

Notably, Israel had contested the ICC’s jurisdiction, claiming it could not be exercised without Israel’s consent. Nonetheless, the Chamber ruled that the Court has jurisdiction based on Palestine’s territorial scope, including Gaza, the West Bank, and East Jerusalem. It further noted that Israel’s objections were premature, as jurisdictional challenges under the Rome Statute can only be made after an arrest warrant is issued.

Reportedly, Israel had also requested a fresh notification regarding the investigation, started in 2021. Denying the request, the court stated that Israel had earlier declined to request a deferral, making additional notifications unnecessary.

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Yogi Adityanath accords tax-free status to Sabarmati Report film in Uttar Pradesh

Earlier, Prime Minister Narendra Modi and Home Minister Amit Shah have also praised this film.

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Uttar Pradesh Chief Minister Yogi Adityanath on Thursday accorded a tax-free status to ‘The Sabarmati Report’ film, based on the train burning incident at Godhra in Gujarat in 2002, in the state.

The announcement was made after Chief Minister Adityanath attended the screening of Vikrant Massey and Raashii Khanna-starrer ‘The Sabarmati Report’ in Lucknow with the film’s cast.  

Speaking to reporters, actor Vikrant Massey thanked the Uttar Pradesh Chief Minister for making ‘The Sabarmati Report’ film tax-free in the state. “I want to thank Yogi Adityanath ji. This is an important film and I appeal to everyone to go and watch this film,” he said.

Chief Minister Adityanath along with many of his cabinet colleagues watched the film ‘The Sabarmati Report’ under a special screening at a cinema hall in the capital, said a spokesperson of the state government.

Several people associated with the film unit were also present on the occasion. Later the chief minister announced to make this film tax-free in UP.

The BJP-ruled states have been praising the makers of The Sabarmati Report, claiming the team has tried to bring out this truth in front of the people of the country through the film.

The saffron party is appealing to people to watch this film and try to get closer to the truth of Godhra.

Uttar Pradesh becomes the sixth BJP-ruled state after Haryana, Rajasthan, Chhattisgarh, Madhya Pradesh and Gujarat to declare lead actors Vikrant Massey and Raashii Khanna’s film tax-free.

Adityanath said along with identifying the faces of those who are conspiring against the country for political gains, there is also a need to expose them. The film team has discharged its responsibilities to expose the truth, he said, adding an attempt has been made to bring the real truth in front of the country in a big way through the film.

The Sabarmati Report is said to be based on the incident of setting fire to a train full of ‘karsevaks’ in Godhra on February 27, 2002, killing 90 devotees. After this incident, communal riots broke out in Gujarat. Earlier, Prime Minister Narendra Modi and Home Minister Amit Shah have also praised this film.

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