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
November 21,2024

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Shares of Adani Group companies lost about $28 billion in market value in morning trade on Thursday after US prosecutors charged the billionaire chairman of the Indian conglomerate in an alleged bribery and fraud scheme.

Gautam Adani's flagship company Adani Enterprises tumbled 23 per cent, while Adani Ports, Adani Total Gas, Adani Green, Adani Power, Adani Wilmar and Adani Energy Solutions, ACC , Ambuja Cements and NDTV fell between 20 per cent and 90 per cent.

Adani group's 10 listed stocks had a total market capitalisation of about $141 billion at 0534 GMT, compared to $169.08 billion on Tuesday.

US authorities said Adani and seven other defendants, including his nephew Sagar Adani, agreed to pay about $265 million in bribes to Indian government officials to obtain contracts expected to yield $2 billion of profit over 20 years, and develop India's largest solar power plant project.

Adani Green in a statement on Thursday said the US Justice Department had issued a criminal indictment against board members Gautam Adani and Sagar Adani and the Securities and Exchange Commission had issued a civil complaint against them.

The US Justice Department also included Adani Green board member Vneet Jaain in the criminal indictment, it said.

Adani Green's units had decided not to proceed with the proposed US dollar denominated bond offerings due to developments, it added.

"Investors will shy away from Adani Group stocks ... and that's what this sharp selling is signifying," said Saurabh Jain, assistant vice president of retail equities research at SMC Global Securities.

"This could hurt the credibility of the group and maybe borrowing costs will rise," he said.

The indictment comes nearly two years after US shortseller Hindenburg Research alleged that Adani had improperly used tax havens and was involved in stock manipulation, allegations the conglomerate denied.

Also in early Asian trading on Thursday, Adani dollar bonds slumped, with prices down 3c-5c on bonds for Adani Ports and Special Economic Zone. The falls were the largest since the Adani Group came under a short-seller attack in February 2023.

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News Network
November 21,2024

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The International Criminal Court (ICC) has issued arrest warrants for Israeli prime minister Benjamin Netanyahu and his former minister of military affairs Yoav Gallant over war crimes against Palestinians in the Gaza Strip.

The court’s Pre-Trial Chamber I issued warrants of arrest for Netanyahu and Gallant "for crimes against humanity and war crimes committed from at least 8 October 2023 until at least 20 May 2024, the day the Prosecution filed the applications for warrants of arrest”, it confirmed in a statement Thursday.

It is the first instance in the court's 22-year history it has issued arrest warrants for Western-allied senior officials.

In its statement, the ICC's Pre-Trial Chamber I, a panel of three judges, said it has rejected appeals by Israel challenging its jurisdiction. 

The chamber said it has decided to release the arrest warrants because "conduct similar to that addressed in the warrant of arrest appears to be ongoing", referring to Israel's ongoing onslaught on Gaza.

Netanyahu and Gallant, it said, “each bear criminal responsibility” for “the war crime of starvation as a method of warfare; and the crimes against humanity of murder, persecution, and other inhumane acts,” as well as “intentionally directing an attack against the civilian population.”

All 124 states that signed the Rome Statute, the treaty that established the court, are now under an obligation to arrest the wanted individuals and hand them over to the ICC in the Hague. 

The court relies on the cooperation of member states to arrest and surrender suspects. The Netherlands' foreign minister quickly said his country was prepared to enforce the warrants while 93 nations earlier reiterated their support for the ICC.

Triestino Mariniello, a lawyer representing Palestinian victims at the ICC, called the warrants "a historic decision".

He noted that the court had endured "pressure and threats of sanctions" from the US government, but acted nonetheless.

As expected, the Tel Aviv regime rejected the rulings, with its security minister Itamar Ben Gvir calling the warrants “anti-Semitic through and through.”

The ICC said Israel’s acceptance of the court’s jurisdiction was not required.

Israel and its major ally, the United States, are not members of the court. 

Israel unleashed its bloody Gaza onslaught on October 7, 2023. So far, it has killed at least 43,985 Palestinians, mostly women and children, and injured 104,092 others, according to the Gaza Health Ministry.

Israel faces an ongoing South Africa-led genocide case at the International Court of Justice (ICJ).

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News Network
November 14,2024

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The UN special rapporteur for Palestine has slammed Israel’s parliament for passing a law authorizing the detention of Palestinian children, who are “tormented often beyond the breaking point” in Israeli custody.

Francesca Albanese, the UN special rapporteur on the rights situation in the Occupied Palestinian Territory, in a Thursday post on X, characterized the experiences of Palestinian minors in Israeli detention as extreme and often inhumane.

The UN expert highlighted the grave impact of this policy, noting that up to 700 Palestinian minors are taken into custody each year, a practice she described as part of an unlawful occupation that views these children as potential threats.

Albanese said Palestinian minors in Israeli custody are “tormented often beyond the breaking point” and that “generations of Palestinians will carry the scars and trauma from the Israeli mass incarceration system.”

She further criticized the international community for its inaction, suggesting that ongoing diplomatic efforts, which often rely on the idea of resuming negotiations for peace, have contributed to normalizing such human rights violations against Palestinian children and the broader population.

The comments by Albanese came in response to Israel’s parliament (Knesset) passing a law on November 7 that authorizes the detention of Palestinian children under the age of 14 for “terrorism or terrorist activities.”

Under the legislation, a temporary five-year measure, once the individuals turn 14, they will be transferred to adult prison to continue serving their sentences.

Additionally, the law allows for a three-year clause that enables courts to incarcerate minors in adult prisons for up to 10 days if they are considered dangerous. Courts have the authority to extend this duration if necessary, according to the Knesset.

The legislation underscores a shift in the treatment of minors and raises alarms among human rights advocates regarding the legal and ethical ramifications of detaining children and the conditions under which they may be held.

Thousands of Palestinians, including hundreds of children and women, are currently in Israeli jails—around one-third without charge or trial. Also, an unknown number are arbitrarily held following a wave of arrests in the wake of the regime's genocidal war on Gaza.

Since the onset of the Gaza war, the Israeli regime, under the supervision of extremist minister Itamar Ben-Gvir, has turned prisons and detention centers into “death chambers,” the ministry of detainees and ex-detainees’ affairs in Gaza says.

Violence, extreme hunger, humiliation, and other forms of abuse of Palestinian prisoners have been normalized across Israel’s jail system, reports indicate.

Over 270 Palestinian minors are being detained by Israeli authorities, in violation of UN resolutions and international treaties that forbid the incarceration of children, as reported by Palestinian rights organizations.

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