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.

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News Network
November 28,2025

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Mangaluru, Nov 28: Karnataka Health Minister and Dakshina Kannada district in-charge minister Dinesh Gundu Rao on Friday handed over Chief Minister Siddaramaiah’s letter to Prime Minister Narendra Modi, highlighting the severe distress faced by farmers due to crashing crop prices.

PM Modi arrived at the Mangaluru International Airport en route to Udupi, where Gundu Rao welcomed him and submitted the letter. The chief minister’s message stressed that farmers are suffering heavy losses because maize and green gram are being bought far below the Minimum Support Price (MSP). The state urged the Centre to immediately begin procurement at MSP.

According to the letter, Karnataka has a bumper harvest this year—over 54.74 lakh metric tons of maize and 1.98 lakh metric tons of green gram—yet farmers are unable to secure fair prices. Against the MSP of ₹2,400/MT for maize and ₹8,768/MT for green gram, market rates have plunged to ₹1,600–₹1,800 and ₹5,400 respectively.

The chief minister has requested the Centre to:

• Direct NAFED, FCI and NCCF to start MSP procurement immediately.
• Ensure ethanol units purchase maize directly from farmers or FPOs.
• Increase Karnataka’s ethanol allocation, citing high production capacity.
• Stop maize imports, which have depressed domestic prices.
• Relax quality norms for green gram, allowing up to 10% discoloration due to rains.

The letter stresses that MSP is crucial for farmer dignity and income stability and calls for swift central intervention to prevent a deepening crisis.

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News Network
December 3,2025

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IndiGo, India’s largest airline, is battling one of its worst operational disruptions in recent years, with hundreds of delays and cancellations throwing domestic travel into chaos.

Government data on Tuesday showed its on-time performance plunging to 35%, an unusual dip for a carrier long associated with punctuality.

By Wednesday afternoon, airports in Delhi, Mumbai, Bengaluru and Hyderabad had collectively reported close to 200 cancellations, stranding travellers across the country.

Crew Shortage After New Duty Norms

A major trigger behind the meltdown is a severe crew shortage, especially among pilots, following the rollout of revised Flight Duty Time Limitation (FDTL) norms last month.

The rules mandate longer rest hours and more humane rosters — a shift IndiGo has struggled to incorporate across its vast network.

Sources said several flights were grounded due to lack of cabin crew, while some delays stretched upwards of eight hours.

With IndiGo controlling over 60% of India’s domestic aviation market, the ripple effect has impacted airports nationwide.

IndiGo Issues Apology, Lists “Compounding Factors”

In a statement, IndiGo acknowledged the large-scale disruption:

“We sincerely apologise to customers. A series of unforeseen operational challenges — technology glitches, winter schedule changes, adverse weather, system congestion and updated FDTL norms — created a compounding impact that could not have been anticipated.”

To stabilise operations, the airline has begun calibrated schedule adjustments for the next 48 hours, aiming to restore punctuality. Affected passengers are being offered refunds or alternate travel arrangements, IndiGo said.

What the FDTL Rules Require

The FDTL norms, designed to reduce pilot fatigue, cap duty and flying hours as follows:
•    Maximum 8 hours of flying per day
•    35 hours per week
•    125 hours per month
•    1,000 hours per year

Crew must also receive rest equalling twice the flight duration, with a minimum 10-hour rest period in any 24-hour window.

The DGCA introduced these limits to enhance flight safety.

Hyderabad: 33 Flights Cancelled, Long Queues Reported

Hyderabad’s Rajiv Gandhi International Airport saw heavy early-morning crowds as 33 IndiGo flights (arrivals and departures) were cancelled.

The airport clarified on X that operations were normal, advising passengers to contact IndiGo directly for latest flight status.

Cancellations included flights to and from Visakhapatnam, Goa, Ahmedabad, Delhi, Bengaluru, Chennai, Madurai, Hubli, Bhopal and Bhubaneswar.

Bengaluru: 42 Flights Disrupted

Bengaluru’s Kempegowda International Airport recorded 42 cancellations — 22 arrivals and 20 departures — affecting routes to Delhi, Mumbai, Chennai, Hyderabad, Goa, Kolkata and Lucknow.

Passengers Vent on Social Media

Irate travellers took to X to share their experiences. One passenger stranded in Hyderabad wrote: “I have been here since 3 a.m. and missed an important meeting.”

Another said: “My flight was pushed from 1:55 PM to 2:55 PM and now 4:35 PM. I was informed only three minutes before entering the airport.”

Delhi Airport Hit by Tech Glitch

At Delhi Airport, the disruption deepened due to a slowdown in the Amadeus system — used for reservations, check-ins and departure control.

The technical issue led to longer queues and sluggish processing, adding to delays already worsened by staff shortages.

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News Network
November 27,2025

Bengaluru, Nov 27: Karnataka Chief Minister Siddaramaiah’s camp is reportedly on alert as the Congress leadership tussle in the state intensifies, particularly amid speculation over the potential promotion of Deputy Chief Minister D.K. Shivakumar. Siddaramaiah is said to be in a “wait-and-watch” mode after admitting to “confusion” earlier this week and urging the party to “put a full stop” to it.

Sources say his supporters are ready to act if senior leaders — including party chief Mallikarjun Kharge, Sonia Gandhi, and Rahul Gandhi — give any indication of backing Shivakumar. If the party insists on a leadership change, Siddaramaiah’s camp has a list of alternatives, underscoring the deep rift between the two leaders. One possible candidate is Home Minister G. Parameshwara, a Siddaramaiah loyalist and influential Dalit leader.

The strategy was reportedly finalized at a meeting led by PWD Minister Satish Jarkiholi, another Siddaramaiah supporter, who stressed that Delhi leaders need to resolve the issue. Kharge and the Gandhis are expected to meet soon, after which Siddaramaiah and Shivakumar may be summoned to Delhi.

Shivakumar has largely stayed non-confrontational, publicly endorsing Siddaramaiah and downplaying speculation about his own ambitions. However, he has made pointed comments emphasizing the importance of honoring promises, directed at Siddaramaiah.

The feud traces back to the 2023 state election, when Siddaramaiah was chosen as Chief Minister while Shivakumar, who led the party’s campaign, was made Deputy CM and state party chief — a departure from the Congress’ usual “one post per person” rule.

There were also hints of a prior understanding that Siddaramaiah would step down midway through the term. As the halfway mark passed last week, Shivakumar-aligned lawmakers have ramped up pressure on the party for a leadership change, with Shivakumar himself hinting at stepping down as state party chief to pursue the top job.

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