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
January 14,2020

New Delhi, Jan 14: The curative petitions of Vinay Sharma and Mukesh, who were sentenced to death in the Nirbhaya gang rape and murder case, was on Tuesday rejected by a five-judge Supreme Court Bench led by Justice N.V. Ramana.

In a three-page order, the Bench concluded, after an in chamber consideration that began about 1.45 p.m., that there was no merit in their pleas to spare them from the gallows.

“We have gone through the curative petitions and relevant documents. In our opinion, no case is made out within the parameters indicated in the decision of this Court in Rupa Ashok Hurra versus Ashok Hurra. Hence, the curative petitions are dismissed,” the court held.

Curative is a rare remedy devised by a Constitution Bench of the Supreme Court in its judgment in the Rupa Ashok Hurra case in 2002. A party can take only two limited grounds in a curative petition - one, he was not heard by the court before the adverse judgment was passed, and two, the judge was biased. A curative plea, which follows the dismissal of review petition, is the last legal avenue open for convicts in the Supreme Court. Sharma was the first among the four convicts to file a curative.

The Bench also rejected their pleas to stay the execution of their death sentence and for oral hearing in open court.

Besides Justice Ramana, the Bench comprised Arun Mishra, Rohinton Nariman, R. Banumathi and Ashok Bhushan.

Curative petitions were filed in the Supreme Court by both convicts on January 9. The petitions had come just days after a Delhi sessions court schedulled the execution of all the four convicts in Tihar jail on January 22.

Sharma and Mukesh, in separate curative petitions, argued that there was a “sea change” in the death penalty jurisprudence since their convictions. Carrying out the death sentence on such changed circumstances would be a “gross miscarriage of justice”.

In his plea, Sharma said the Court had commuted the death penalty in several rape and murder cases since 2017, when it first confirmed the death penalty to the Nirbhaya convicts.

“fter the pronouncement of judgment in 2017, there have been as many as 17 cases involving rape and murder in which various three-judge Benches of the Supreme Court have commuted the sentence of death,” the petition contended.

The Supreme Court recently dismissed a review petition filed by Akshay Singh, another of the four four condemned men, to review its May 5, 2017 judgment confirming the death penalty. It also refused his plea to grant him three weeks' time to file a mercy petition before the President of India.

A Bench led by Justice R. Banumathi had said it was open for the Nirbhaya case convicts to avail whatever time the law prescribes for the purpose of filing a mercy plea.

Akshay (33), Mukesh (30), Pawan Gupta (23) and Sharma (24) had brutally gang-raped a 23-year-old paramedical student in a moving bus on the intervening night of December 16-17, 2012. She died of her injuries a few days later.

The case shocked the nation and led to the tightening of anti-rape laws. Rape, especially gang rape, is now a capital crime.

One of the accused in the case, Ram Singh, allegedly committed suicide in the Tihar jail. A juvenile, who was among the accused, was convicted by a juvenile justice board. He was released from a reformation home after serving a three-year term.

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Agencies
May 7,2020

A patient in hospital with Covid-19 has given birth to a healthy baby boy in Dubai.

The 25-year-old Indian was admitted to Al Zahra Hospital after testing positive on May 2.

Although the baby was not due to arrive until May 19, the woman went into labour three days later and delivered a healthy boy weighing 3.8kg.

The parents are yet to name the child, who has also been tested for the virus.

“When we first received the Covid-19 positive diagnosis, we were afraid for the health of both my wife and the baby,” said the boy’s father, who did not want to give his name.

“Thankfully with the help of the doctors and nurses at Al Zahra Hospital, my son was born with no complications and my wife remains in stable condition.

“We couldn’t be more grateful.”

Despite arriving two weeks early, both mother and child are doing well but will only be allowed to leave the hospital to return to their home in Dubai after they return three negative tests on the trot.

“The contractions started very suddenly and it all happened very quickly,” said Al Zahra Hospital nursing director Maysoon Yousef.

“The delivery took about 10 to 15 minutes which is something we do not see very often.

“There were no complications and both the mother and baby are in good condition.”

Strict measures are in place to ensure hygiene for those inside the hospital, as well as visitors.

The new mum and her son are in the same room as the baby needs to be nursed.

According to the Centres for Disease Control and Prevention, a US national public health institute, there is no evidence that suggests the virus can be transmitted through breastfeeding.

New mothers infected with the virus should wear a mask, wash their hands before and after touching the baby.

“We operate by the latest Covid-19 international and local guidelines when it comes to the management of our maternity patients and otherwise,” said Dr Ghassan Lutfi, head of obstetrics and gynaecology at the hospital.

“We take strict measures to guarantee that there is no risk of cross contamination and that all our patients are in safe hands.”

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Agencies
February 20,2020

Tokyo, Feb 20: One more Indian on board the cruise ship Diamond Princess quarantined off the coast of Japan was tested positive for novel coronavirus, the Indian Embassy in Tokyo said on Wednesday, adding that all seven Indian nationals infected with the virus have been shifted to hospitals in Japan for treatment.

"1 Indian crew who tested positive for #COVID19 among 88 new cases yesterday on #DiamondPrincess taken to hospital for treatment. Indians receiving treatment responding well. From today, the disembarkation of passengers only started, likely to continue till 21 Feb," the embassy tweeted.

"As of 2100 JST, altogether 7 Indian nationals (crew members on board #DiamondPrincess) are receiving treatment in hospitals in Japan, after testing positive for #COVID19 over last few days. Their health conditions are improving. 
@MEAIndia," the following tweet read.

A total of 138 Indians, including 132 crew and 6 passengers, were among the 3,711 people on board the luxury cruise ship which was quarantine off Japan on February 5 after it emerged that a former passenger had tested positive for the virus.

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