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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]

2024 Lok Sabha Elections

Sunita Kejriwal holds maiden Lok Sabha election roadshow in Delhi

Sunita Kejriwal will also hold a road show in West Delhi Lok Sabha constituency on Sunday. AAP party leaders said Sunita Kejriwal will also spearhead the campaign for AAP candidates in South Delhi and New Delhi constituencies as well as in Haryana, Gujarat and Punjab.

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Aam Aadmi Party began its campaign for 3rd phase of Lok Sabha elections 2024 on Saturday with Sunita Kejriwal, wife of jailed Delhi Chief Minister Arvind Kejriwal holding a roadshow in Delhi. In a massive rally, Sunita Kejriwal was be seen standing on a vehicle holding her hands and greeting the people of the area. AAP’s East Delhi candidate Kuldeep Kumar was seen sitting on the vehicle as he showcased a portrait of Rani Laxmibai.

Earlier ahead of Sunita Kejrieal’s roadshow, Kuldeep Kumar told the media that Delhi Chief Minister Arvind Kejriwal who worked to provide the best school, and free- electricity to the people of Delhi has been framed in a fake case by BJP. Kumar further added that from today onwards Sunita Kejriwal’s roadshow will start and she is going to seek support and blessings from the Delhi people to continue its fight against the BJP government.

Aam Aadmi Party workers also staged a protest under the banner of Jail ka jawab vote se near Delhi’s Lakshmi Nagar area on Saturday against the arrest of Delhi CM Arvind Kejriwal in connection with an excise policy case.

After the Delhi CM’s arrest by the Enforcement Directorate (ED) in the liquor policy case in March, Sunita Kejriwal has taken up a more prominent role in campaigning activities for the Aam Aadmi Party. Since the Delhi CM’s arrest, Atishi and other AAP leaders have alleged that the arrest was made so that to the AAP Supremo can be prevented from campaigning for the Lok Sabha elections. Arvind Kejriwal has been sent to judicial custody until May 7.

Sunita Kejriwal will also hold a road show in West Delhi Lok Sabha constituency on Sunday. AAP party leaders said Sunita Kejriwal will also spearhead the campaign for AAP candidates in South Delhi and New Delhi constituencies as well as in Haryana, Gujarat and Punjab. She is emerging as a star campaigner for Aam Aadmi Party.

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2024 Lok Sabha Elections

Mallikarjun Kharge says candidates for Amethi, Rae Bareli seats in Uttar Pradesh will be announced in a few days

On being asked about the names of the candidates for Amethi and Rae Bareli Lok Sabha constituencies Mallikarjun Kharge said the people will have to wait for a few more days. He said when the names of candidates come from people to him and he will sign the notification, then the announcement will be made.

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Congress president Mallikarjun Kharge on Saturday said that the candidates for prestigious Amethi and Rae Bareli seats in Uttar Pradesh will be announced in a few days. He was addressing a press conference where he claimed that though the BJP says the corrupt must be put in jails, when leaders facing corruption charges join the saffron party, they are put on the lap and sent to Rajya Sabha or assembly.

On being asked about the names of the candidates for Amethi and Rae Bareli Lok Sabha constituencies he said the people will have to wait for a few more days. He said when the names of candidates come from people to him and he will sign the notification, then the announcement will be made.

On being questioned about Congress leaders changing constituencies Kharge asked how many times have Atal Bihari Vajpayee and Lal Krishna Advani changed their seats. His response came when asked about the BJP criticising Rahul Gandhi for fighting the elections from Kerala’s Wayanad instead of Amethi. Referring to Assam Chief Minister Himanta Biswa Sarma, Kharge said the Congress is not affected by people who grew up in the party and left it later.

The Congress president launched an all round attack on the BJP and PM Modi and said the prime minister did not implement even one of his electoral promises and still says Modi did a lot of work for the country. Addressing the press conference he said the BJP never fought for the independence of India, but Congress is a party of those who made India independent. He said the BJP never fought for the independence of India, for the development of India. The Congress President said the BJP speaks so much about patriotism and that the contribution of Pandit Jawahar Lal Nehru, Indira Gandhi and Lal Bahadur Shastri is nothing before them.

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2024 Lok Sabha Elections

Priyanka Gandhi accuses BJP of planning to change the Constitution, criticises PM Modi for inflation

Priyanka Gandhi was speaking at an election rally at Dharampur village of tribal dominated Valsad district held in support of Congress candidate for ST-reserved Valsad Lok Sabha seat, Anant Patel.

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Congress leader Priyanka Gandhi on Saturday said the BJP may be denying it now, but the party will change the Constitution if it returns to power. She targeted Prime Minister Narendra Modi over inflation and called him the mehengai man.

Gandhi said the BJP leaders and candidates are saying that they will change the Constitution. She said PM Modi is denying it and this is BJP’s tactic. Priyanka Gandhi was speaking at an election rally at Dharampur village of tribal dominated Valsad district, Gujarat held in support of Congress candidate for ST-reserved Valsad Lok Sabha seat, Anant Patel.

Gandhi said first the BJP will deny what they want to do. But after coming to power they will implement it. She further added the BJP wants to change the constitution to weaken the common people and deprive them of their rights given in the Constitution. She said the BJP leaders project the Prime Minister as powerful and say that chutki bajake ladai rukwa dete hai (he can stop the Russia- Ukraine war with the snap of his fingers). She asked why is Prime Minister unable to remove poverty just like that?

Priyanka Gandhi claimed the tribal population in Gujarat which is Modi’s home state and the whole country is suffering from issues like rising inflation, unemployment, low remumberation, loss of land, violence against women and other atrocities. She highlighted the Congress manifesto and said it addresses issues faced by the tribal population.

She assured the people that the Congress will bring schemes like MGNREGA for urban areas where families will get 100 days of guaranteed work. She said the Congress is committed to filing about 30 lakh vacancies in government jobs, providing subsidised diesel to fishermen and take the minimum wage to Rs 400. Gandhi said the Congress is going to work out sub plans for Scheduled Tribes and scheduled castes.

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