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
April 20,2024

Union Finance Minister Nirmala Sitharaman, on Friday, said that the Bharatiya Janata Party (BJP) plans to reintroduce electoral bonds in some capacity following extensive consultations with all stakeholders, should it come back to power in the 2024 general elections, according to a report in the Hindustan Times (HT).

HT cited Nirmala Sitharam as saying, “We still have to do a lot of consultation with stakeholders and see what is it that we have to do to make or bring in a framework which will be acceptable to all, primarily retain the level of transparency and completely remove the possibility of black money entering into this.”

However, the Centre has not yet decided whether to seek a review of the ruling made by the Supreme Court (SC), she said.

She further added, “What the scheme, which has been just thrown out by the Supreme Court, brought in was transparency. What prevailed earlier was just free-for-all.”

Launched in 2018, electoral bonds were accessible for acquisition at any State Bank of India (SBI) branch. Contributions made through this programme by corporations and even foreign entities via Indian subsidiaries received full tax exemption, while the identities of the donors remained confidential, safeguarded by both the bank and the recipient political parties.

On February 15, a five-judge Constitution Bench struck down the scheme, deeming it ‘unconstitutional’ due to its complete anonymisation of contributions to political parties. Additionally, the Bench stated that the articulated objectives of curbing black money or illegal election financing did not warrant disproportionately infringing upon voters’ right to information.

FM Sitharaman said, some aspects of the scheme need improvement and they will be brought back following consultations.

She also lashed out at the Opposition’s claims that the BJP disregarded criminal charges against leaders who switched from other parties to join the ruling party.

The HT quoted her as saying, “The BJP can’t sit here and say, you come to my party today, and the case will be closed tomorrow. The case has to go through the courts that have to take a call; they will not just say, “Oh, he’s come to your party, close the case.” Doesn’t happen that way. So is this washing machine a term they want to use for the courts?”

She further said that the Union government plans to simplify the process of taxation and make it easy for investments to come through into the country.

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
April 22,2024

hizbullah.jpg

Some 62,000 Israeli settlers have fled areas in the northern sector of the 1948 Israeli-occupied lands amid fear of strikes by Lebanon’s Hezbollah resistance movement in retaliation for the bloody onslaught on Gaza, latest reports have revealed.

Lebanon’s al-Mayadeen television news channel, citing Israeli media outlets, reported on Sunday evening that the number of settlers that have evacuated the area as a result of Hezbollah’s operations now stands at a staggering 62,000.

The report noted that 30,000 of the settlers have evacuated northern occupied Palestine on their own as fears are mounting among the residents that Hezbollah fighters continue to carry out daily operations with no signs that they are deterred by any action the Israeli army is taking.

Israeli media outlets further noted that 40% of the evacuees are considering no return to the region.

Moreover, 38% of those who voluntarily left the area, no longer intend to return to their previous places of residence in the northern occupied territories.

This comes as Hezbollah targeted a facility housing Israeli soldiers in the Shomera settlement earlier on Sunday with a barrage of rockets.

The Lebanese resistance group also struck surveillance devices newly installed around the Dovev military barracks, completely destroying the hardware.

Hezbollah said in a statement that it attacked the deployment positions of Israeli soldiers south of the Jal al-Alam site, using heavy-caliber Burkan (Volcano) missiles.

In another statement, the resistance group announced that its fighters struck surveillance equipment at the Misgav Am military site, which Israeli forces had lately re-positioned.

Surveillance equipment at the al-Malkiya base was also targeted and destroyed, it said, adding that the operation was carried out with a salvo of rockets.

The Israeli regime has repeatedly attacked southern Lebanon since October 7, when it launched a genocidal war on Gaza that has killed at least 34,097 Palestinians, most of them women and children.

In retaliation, Hezbollah has launched near-daily rocket attacks on Israeli positions.

At least 349 people have been killed on the Lebanese border, including 68 civilians.

Hezbollah has already fought off two Israeli wars against Lebanon in 2000 and 2006. The resistance forced the regime to retreat in both conflicts.

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
April 9,2024

shifa.jpg

More decomposed bodies have been found inside al-Shifa Hospital in Gaza, amid operations to recover bodies of the victims of one of the largest massacres committed by Israel against the Palestinians, Euro-Med Human Rights Monitor says.

The founder and chairman of the group Ramy Abdu said in a series of social media posts that “operations to discover bodies executed by the Israeli army at al-Shifa Hospital continue.”

He published a “shocking” video that showed rescue teams, civil defense, and forensic evidence finding more decomposed bodies.

“It seems we are witnessing one of the largest massacres committed by Israel against the Palestinian people in history.”

Abdu said the video confirmed the Geneva-based rights group’s report on field execution operations carried out by the Israeli forces during their recent attack on al-Shifa.

“Horror: Doctors, nurses, displaced persons, administrators at the hospital, children, women. This is what is revealed after the Israeli army's withdrawal from al-Shifa Hospital. Dozens of people were executed in the field,” he said.

According to his remarks, the Israeli army placed the bodies inside pits it had dug.

On March 18, Israeli forces started a new wave of attacks on Gaza’s main hospital, al-Shifa, and imposed a two-week siege on it. 

On April 1, the Gaza Health Ministry said Israeli forces withdrew tanks and vehicles from al-Shifa, adding that dozens of bodies, some of them decomposed, had been found at the complex after the Israeli pullout, which also left behind a vast swath of destruction.

Israel first raided the hospital in Gaza City last November.

Al-Shifa, Gaza’s largest hospital, has sheltered thousands of Palestinians who fled Israel’s invasion in the northern parts of the territory.

The Israeli military claimed that the Palestinian resistance movement Hamas is using the facility to “conduct and promote terrorist activity.” Hamas has repeatedly denied operating from Shifa and other health facilities.

The chief of the World Health Organization (WHO) has said al-Shifa is no longer functional because of months of Israeli siege and attacks on the facility.

Israel launched the war on Gaza on October 7 after the Palestinian resistance movement Hamas waged the surprise Operation Al-Aqsa Storm against the occupying entity in response to the Israeli regime’s intensified violence against Palestinians.

Since the start of the offensive, the Tel Aviv regime has killed 33,207 Palestinians and injured nearly 75,933 others.

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.