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.

Comments

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.

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
June 20,2020

Hyderabad, Jun 20: IAF Chief Air Chief Marshal RKS Bhadauria on Saturday said that the force is well prepared and suitably deployed to respond to any contingency and it will never let the sacrifice of the bravehearts of Galwan go in vain.

"It should be very clear that we are well prepared and suitably deployed to respond to any contingency. I assure the nation that we are determined to deliver and will never let the sacrifice of the braves of Galwan go in vain," IAF Chief Air Chief Marshal Bhadauria said here.

Bhadauria was speaking at the Combined Graduation Parade (CGP) at Air Force Academy in Hyderabad.

His remarks come days after 20 Indian soldiers lost their lives in the violent face-off on June 15-16 during an attempt by the Chinese troops to unilaterally change the status quo during the de-escalation in eastern Ladakh.

Speaking about the current border situation with China, he said: "We are aware of the situation, be it on LAC or beyond, be it their air deployments, their posture and kind of deployments. We've full analysis and we have taken necessary action that we need to take to handle any contingency that may come up."

"We are monitoring all the moments and we are aware of the full situation," he added.

He further said that in spite of the "unacceptable Chinese action" at Galwan Valley in eastern Ladakh, which claimed lives of 20 Indian Army personnel, efforts are underway to ensure that the current situation at the Line of Actual Control (LAC) is resolved peacefully.

He asserted that the IAF is determined to deliver and the development at the LAC in Ladakh is a small snapshot of what the force is required to handle at short notice.

The IAF Chief further appealed to people to join him in paying tribute Colonel Santosh Babu and his brave men who made the sacrifice while defending the LAC in Galwan valley.

"The gallant actions in a highly-challenging situation have demonstrated our resolve to protect India's sovereignty at any cost," the Indian Air Force (IAF) chief said.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
May 30,2020

New Delhi, May 30: As the NDA government completes one year of its second term, Prime Minister Narendra Modi listed several achievements and initiatives taken by his government in the past year in an audio message addressed to the people of the country.

PM Modi said, "This day last year began a golden chapter in the history of Indian democracy. It was after several decades that the people of the country voted back a full-term government with a full majority."

"Your role has played a pivotal role in creating this chapter. In such a situation, this day is an opportunity for me to bow to the citizens of the country and the democratic ethos of our nation," said PM Modi.

"Had the situation been normal, I would have got the chance to meet you. Your affection and active support in the past year have given me new energy and inspiration. During this period, the way you have shown the collective powers of democracy, they have become an example for the whole world," he added.

PM Modi talked about several important initiatives taken by his government in 2014 as well as India's demonstration of its mettle through the surgical strike and airstrike.

"Six years ago in 2014, the people of this country voted to bring a major change in the country. You voted to change the country's policy and manner. During that tenure where surgical strike and airstrike took place, one rank one pension, one nation one tax GST, and better MSP for farmers were also fulfilled. That period was dedicated to fulfilling many needs of the country."

He further said that in these years the country has seen systems coming out of the quagmire of inertia and corruption. The country has seen governance change to make life easier for the poor.

"During that period, India's stature in the world increased. By opening bank accounts of poor people, by giving them gas connections, by providing free electricity connections, by building washrooms, by building houses, the dignity of the poor has also been increased," said PM Modi.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
July 28,2020

New Delhi, Jul 28: Chief Minister Ashok Gehlot had "unconstitutionally" merged six MLAs of the Bahujan Samaj Party (BSP) with the Congress in Rajasthan, he did the same in his earlier tenure too, for which we wanted to teach him and his party a lesson, said BSP chief Mayawati on Tuesday.

The BSP chief added that her party could have gone to courts earlier but decided to wait for the "right opportunity".

"In Rajasthan, after elections results, BSP gave unconditional support of all its 6 MLAs to Congress. Unfortunately, Chief Minister Ashok Gehlot, out of his malicious intent and to damage BSP, merged them with Congress unconstitutionally. He did the same even during his earlier tenure," Mayawati said here.

"BSP could have gone to the court earlier too but we were looking for the time to teach Congress party and CM Ashok Gehlot a lesson. Now we have decided to go to the Court. We will not let this matter alone. We will go even to the Supreme Court," she added.

The BSP chief further reiterated that the party has asked the six MLAs to vote against the Congress government led by Ashok Gehlot if a trust vote takes place on the floor of the Rajasthan Assembly, failing which "their party membership will be cancelled".
She further said that the merger of BSP MLAs with Congress was immoral and went against the mandate given by voters in Rajasthan.
"Ulta-chor kotwal ko daante (the thief accuses the cop of wrongs) they (Congress) themselves indulge in wrongdoing and then accuse us," she further said.
On Sunday, the BSP issued a whip to six MLAs, asking them to vote against Congress in case of a no-confidence motion or any proceedings to be held during the Rajasthan Assembly session.

National General Secretary of BSP Satish Chandra Mishra, while speaking to news agecncy said, "Notices have been issued to the six MLAs separately as well as collectively, pointing out that since BSP is a National Party, there cannot be any merger at the state level at the instance of six MLAs unless there is a merger of BSP at the national level. If they violate it, they will be disqualified.

Notices have been issued to all six MLAs- - R Gudha, Lakhan Singh, Deep Chand, JS Awana, Sandeep Kumar and Wajib Ali, who are elected to the Rajasthan Assembly."
However, later on Monday, Lakhan Singh, hit back saying he and the five others had already joined the Congress.

"We six MLAs have already joined the Congress. BSP remembered us after nine months. They have issued this whip, after a message from the BJP. On this basis they are going to court", said Karauli MLA Lakhan Singh.

Rajasthan government is in turmoil after simmering differences between Deputy Chief Minister Sachin Pilot and Gehlot came out in the open. Pilot was removed as the Deputy Chief Minister and the state unit chief of Congress.

The Congress has accused the BJP of indulging in horse-trading to bring down the Gehlot government. The BJP has rejected the allegations.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.