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 10,2020

Dubai, Jan 10: Iran denied on Thursday that a Ukrainian airliner that crashed near Tehran had been hit by a missile, Iranian government spokesman Ali Rabiei said in a statement, according to state TV.

"All these reports are a psychological warfare against Iran. All those countries whose citizens were aboard the plane can send representatives and we urge Boeing to send its representative to join the process of investigating the black box".

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News Network
January 6,2020

Hyderabad, Jan 6: AIMIM president Asaduddin Owaisi on Monday expressed solidarity with students of Jawaharlal Nehru University in Delhi, following violence in the campus and said the "cruel attack" was meant to "punish"the students as they "dared to stand up".

"In solidarity with the brave students of JNU. This cruel attack is meant to 'punish' JNU students because they dared to stand up. It's so bad that even Union Ministers are tweeting helplessly. Modi Sarkar must answer why cops aresiding with goons," the Hyderabad MP tweeted.

The AIMIM has also tweeted expressing solidarity with the "students of JNU". "AIMIM stands in solidarity with the students of Jawaharlal Nehru University. Who feels threatened by the voice of students?," the party said in a tweet.

Violence broke out at the JNU on Sunday night as masked men armed with sticks and rods attacked students and teachers and damaged property on the campus, prompting the administration to call in police which conducted a flag march.

At least 28 people, including JNU Students' Union president Aishe Ghosh, were injured as chaos reigned on the campus for nearly two hours.

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News Network
February 10,2020

Mumbai, Feb 10: Ankita Pisudde, a resident of Hinganghat town in Wardha, was critical after sustaining 40% burns on February 3 when she was set afire, allegedly by one Vikesh Nagrale (27) while she was on her way to college.

The 25-year-old woman lecturer who was set on fire by a stalker in Maharashtra’s Wardha district last week died at a hospital in Nagpur on Monday morning, a police official said.

Ankita Pisudde, resident of Hinganghat town in Wardha, had been critical after sustaining 35 to 40% “grade III” burns on February 3 when she was set afire allegedly by one Vikesh Nagrale (27) while she was on way to her college, they said.

She was undergoing treatment at the Orange City Hospital & Research Centre here, located around 75 km from Wardha.

“Doctors at the hospital declared her dead at 6.55 a.m. today,” Hinganghat’s police inspector Satyaveer Bandiwar said.

The woman sustained deep burn injuries on scalp, face, right upper limb, left hand, upper back, neck and eyes along with severe inhalational injuries, the hospital said in a medical bulletin on Monday.

She died of “septicemic shock” after suffering from deep dermal burns along with severe inhalational injuries, respiratory distress and related complications, it said.

Around 4 a.m. on Monday, her oxygen levels deteriorated inspite of ventilator support, coupled with decreasing urine output and reduction in blood pressure, the hospital said.

As part of immediate resuscitation measures, medicines were escalated to maintain the blood pressure and all feasible steps were taken to improve the oxygen levels in blood, but the patient remained “extremely critical”, it said.

“Around 6.30 a.m., she had bradycardia and inspite of prolonged cardiopulmonary resuscitation, the patient could not be revived and was declared dead at 6.55 a.m.,” it said.

The probable cause of death was “septicemic shock”, the bulletin added.

During her treatment, she underwent tracheostomy (creating an opening in neck to place a tube into the windpipe to allow air to enter the lungs), burn dressings, debridement and escharotomies, the hospital informed.

Debridement is a medical procedure to remove dead, damaged or infected tissue, while escharotomy is a surgical procedure used to treat full-thickness (third-degree) circumferential burns.

The woman’s parents and uncle were kept informed about her deteriorating health condition and death, the hospital said, adding that the body was later handed over to police for postmortem and other formalities.

After the woman’s condition deteriorated, the hospital informed about her critical status to Maharashtra Home Minister Anil Deshmukh, Wardha Guardian Minister Sunil Kedar, Nagpur Divisional Commissioner Sanjeev Kumar, Police Commissioner Bhushan Kumar Upadhyay, Wardha Collector Vivek Bhimanwar and Wardha Superintendent of Police Basavraj Teli.

Heavy security was deployed in Hinganghat to avoid any law and order problem following her death, the police said.

Several locals, mostly women and college students, took out a march in Wardha city last Thursday, demanding death penalty for the accused.

Home Minister Deshmukh visited the hospital on Tuesday and announced that the accused’s trial would be fast-tracked.

The State government last week flew Navi Mumbai-based National Burns Centre director Sunil Keswani to Nagpur to supervise the woman’s treatment.

It has also appointed well-known lawyer Ujjwal Nikam as special public prosecutor in the case.

According to the victim’s relatives, Nagrale, who was arrested within hours of the incident on February 3, had been harassing her for quite some time.

Nagrale and the woman were friends till two years ago when she severed ties with him due to his “irrational behaviour”, the police earlier said.

A special team led by Deputy Superintendent of Police Trupti Jadhav will probe the case, the Wardha Police said last week.

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