Tag: Blast

  • ‘Perfect explosion’: merger of neutron stars creates spherical cosmic blast

    ‘Perfect explosion’: merger of neutron stars creates spherical cosmic blast

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    Astronomers have observed what might be the “perfect explosion”, a colossal and utterly spherical blast triggered by the merger of two very dense stellar remnants called neutron stars shortly before the combined entity collapsed to form a black hole.

    Researchers on Wednesday described for the first time the contours of the type of explosion, called a kilonova, that occurs when neutron stars merge. The rapidly expanding fireball of luminous matter they detailed defied their expectations.

    The two neutron stars, with a combined mass about 2.7 times that of our sun, had orbited each other for billions of years before colliding at high speeds and exploding. This unfolded in a galaxy called NGC 4993, about 140-150m light years away from Earth in the direction of the constellation Hydra. A light year is the distance light travels in a year, 5.9tn miles (9.5tn km).

    The existence of kilonova explosions was proposed in 1974 and confirmed in 2013, but what they looked like was unknown until this one was detected in 2017 and studied intensively.

    “It is a perfect explosion in several ways. It is beautiful, both aesthetically, in the simplicity of the shape, and in its physical significance,” said astrophysicist Albert Sneppen of the Cosmic Dawn Center in Copenhagen, lead author of the research published in the journal Nature.

    “Aesthetically, the colors the kilonova emits quite literally look like a sun – except, of course, being a few hundred million times larger in surface area. Physically, this spherical explosion contains the extraordinary physics at the heart of this merger,” Sneppen added.

    The researchers had expected the explosion to perhaps look like a flattened disk – a colossal luminous cosmic pancake, possibly with a jet of material streaming out of it.

    “To be honest, we are really going back to the drawing board with this,” Cosmic Dawn Center astrophysicist and study co-author Darach Watson said.

    “Given the extreme nature of the physical conditions – far more extreme than a nuclear explosion, for example, with densities greater than an atomic nucleus, temperatures of billions of degrees and magnetic fields strong enough to distort the shapes of atoms – there may well be fundamental physics here that we don’t understand yet,” Watson added.

    The kilonova was studied using the European Southern Observatory’s Chile-based Very Large Telescope.

    The two neutron stars began their lives as massive normal stars in a two-star system called a binary. Each exploded and collapsed after running out of fuel, leaving behind a small and dense core about 12 miles (20km) in diameter but packing more mass than the sun.

    Very gradually, they drew nearer to each other, orbiting at a speedy clip. Each were stretched out and pulled apart in the final seconds before the merger because of the power of the other’s gravitational field. Their inner parts collided at about 25% of the speed of light, creating the most intense magnetic fields in the universe. The explosion unleashed the luminosity of about a billion suns for a few days.

    The two briefly formed a single massive neutron star that then collapsed to form a black hole, an even denser object with gravity so fierce that not even light can escape.

    The outer parts of the neutron stars, meanwhile, were stretched into long streamers, with some material flung into space. During the process, the densities and temperatures were so intense that heavy elements were forged, including gold, platinum, arsenic, uranium and iodine.

    The researchers offered some hypotheses to explain the spherical shape of the explosion, including energy released from the short-lived single neutron star’s enormous magnetic field or the role of enigmatic particles called neutrinos.

    “This is fundamentally astonishing, and an exciting challenge for any theoreticians and numerical simulations,” Sneppen said. “The game is on.”

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    ( With inputs from : www.theguardian.com )

  • 2 Civilians, Firefighter Injured As Gas Cylinder Blast Triggers Blaze

    2 Civilians, Firefighter Injured As Gas Cylinder Blast Triggers Blaze

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    SRINAGAR: At least two civilians and a firefighter were injured while dousing off blaze, triggered by a gas cylinder blast, in Wanihama area of south Kashmir’s Anantnag district.

    Reports said that a gas cylinder exploded with a bang, resulting in fire in the house of one Mohammad Ishaq Parry, son of Ghulam Mohidin Parray at Watrigam Wanihama.

    Fire tenders were rushed to the spot to contain the spread of fire and in the course of time two civilians identified as Tawseef Ahmad and Waseem Ahmad Itoo and a firefighter received injuries at the incident spot.

    The injured trio was taken to a nearby hospital, where all of them are said to be stable.

    An F&ES official confirming the injury of the fireman, identified him as Manzoor Ahmad, working as MD in the department.(GNS)

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    #Civilians #Firefighter #Injured #Gas #Cylinder #Blast #Triggers #Blaze

    ( With inputs from : kashmirlife.net )

  • Mortar Shell Destroyed Near Line of Control

    Mortar Shell Destroyed Near Line of Control

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    SRINAGAR: Army on Monday destroyed a mortar shell in Mendhar sub-division in Poonch district, officials said.

    Reports appearing in media said that a 120-mm old mortar shell was destroyed by the Army in Basoni area of Balakote sector of Mendhar, sub-division of Poonch district. There was no loss or injury to anyone or damage caused to any property in the incident.

    Meanwhile, a 15-year-old boy was injured in a mine blast while grazing sheep and goat near Line of Control in Poonch. Identified as Mahroof, 15,  son of Jamaal Din of ward No 4 Pawaan, stepped accidentally on an anti-personnel mine near Qasba village close to his native village, leading to injuries to him. He was later shifted to hospital.

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    #Mortar #Shell #Destroyed #Line #Control

    ( With inputs from : kashmirlife.net )

  • 15-Year-Old Boy Injured In Mine Blast

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    SRINAGAR: A 15-year-old was injured in a mine blast while grazing sheep and goat near Line of Control in Poonch district on Monday, officials said.

    Quoting officials news agency GNS reported that the boy, Mahroof (15) son of Jamaal Din of ward no. 04 Pawaan, stepped accidentally on anti-personnel mine near Qasba village close to his native village, leading to injuries to him.

    A police official confirming the incident said that the injured has been shifted to hospital.

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    #15YearOld #Boy #Injured #Blast

    ( With inputs from : kashmirlife.net )

  • Army Man Injured In Landmine Blast

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    SRINAGAR: An army man was injured in a landmine blast along Line of Control in Kerni sector of Poonch district on Saturday, official sources said.

    Quoting official sources news agency GNS reported that the blast, apparently occurring accidentally, occurred at around 11:15 a.m., leaving the soldier identified as A Rawat injured who was immediately airlifted to army’s command hospital in Udhampur.

    Confirming it, an official said that the status of the soldier’s condition was not immediately known.

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    #Army #Man #Injured #Landmine #Blast

    ( With inputs from : kashmirlife.net )

  • Soldier Injured In Landmine Blast Along LoC in Poonch

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    Jammu, Feb 4: A soldier was injured in a landmine blast along Line of Control in Kerni sector of Poonch district on Saturday, official sources said.

    They told GNS that the blast, apparently occurring accidentally, occurred at around 11:15 a.m., leaving the soldier identified as A Rawat injured who was immediately airlifted to army’s command hospital in Udhampur. Confirming it, an official told GNS that the status of the soldier’s condition was not immediately known. (GNS)

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    #Soldier #Injured #Landmine #Blast #LoC #Poonch

    ( With inputs from : roshankashmir.net )

  • Bomb blast near Sunny Leone’s fashion show venue in Imphal

    Bomb blast near Sunny Leone’s fashion show venue in Imphal

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    Imphal: A powerful explosion took place on Saturday near the venue of a fashion show event in Imphal which actress Sunny Leone is scheduled to attend on Sunday, an official said.

    However, no injuries were reported in the incident that took place in Hatta Kangjeibung area of Manipur’s capital.
    The blast took place only 100 metres from the venue around 6.30 am on Saturday.

    It is not yet clear whether the explosion was caused due to an Improvised Explosive Device or a grenade, he said.

    No militant outfit has claimed responsibility for the explosion so far.

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    #Bomb #blast #Sunny #Leones #fashion #show #venue #Imphal

    ( With inputs from www.siasat.com )

  • India condoles loss of lives in deadly Peshawar mosque blast

    India condoles loss of lives in deadly Peshawar mosque blast

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    New Delhi [India], January 31 (ANI): India extended condolences to the families of the victims of the deadly terror attack that shook Peshawar in Pakistan on Monday.

    So far, the toll of the dead stands at 90 with over 100 people injured, Geo News reported citing Radio Pakistan.

    Taking to Twitter, MEA Spokesperson Arindam Bagchi wrote, “India extends its deep condolences to the families of the victims of the terror attack in Peshawar yesterday. We strongly condemn this attack, which has taken the lives of so many people.”

    The explosion took place in the central hall of the mosque on Monday at around 1 pm after a suicide bomber blew himself up. A rescue operation is being carried out to pull out bodies from the debris of the mosque, Geo News reported citing an official.

    According to security officials, the suicide attacker was present in the front row during the prayers when he blew himself up. The outlawed Tehreek-e-Taliban Pakistan (TTP) has claimed responsibility for the attack.

    Speaking to Geo News, Capital City Police Officer (CCPO) Peshawar Mohammad Aijaz Khan said that the explosion appears to be a suicide attack and the head of the suspected bomber has also been found at the site.

    “It is possible that the attacker was already present in the Police Lines before the blast and that he may have used an official vehicle [to enter],” Geo News quoted Mohammad Aijaz Khan as saying.

    “About 1,500 to 2,000 police officers visit the Police Lines daily,” he added.

    Earlier, an eyewitness said there were at least 120 people at the mosque when the explosion took place. He said that the injured mostly included police personnel.

    Khyber Pakhtunkhwa Caretaker Chief Minister Muhammad Azam Khan announced a day of mourning in the province on Tuesday after the attack, according to a Geo News report. He said that the national flag will be at half-mast in the province.

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    #India #condoles #loss #lives #deadly #Peshawar #mosque #blast

    ( With inputs from www.siasat.com )

  • ‘Intellectually bankrupt’: Biden allies blast GOP debt-limit backup plan

    ‘Intellectually bankrupt’: Biden allies blast GOP debt-limit backup plan

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    The White House and Treasury are already putting up resistance to the idea, which Treasury says would amount to a default. But disclosures over the past several years — driven in part by investigations by House Republicans — have revealed that officials believe the government has the technical capacity to implement payment prioritization, though it would be experimental and risky.

    “Most investors who follow this closely are very aware the United States will not default on its bonds,” Ajay Rajadhyaksha, global chair of research at Barclays, said in an interview.

    The debate around the potential backup plan underscores the economic uncertainty that’s already being triggered by the political stalemate around raising the debt limit, the total amount of money that Congress authorizes the government to borrow. Many on Wall Street doubt payment prioritization would work.

    It’s also a window into the fraught choices awaiting the Biden administration if lawmakers are unable to resolve the impasse. Paying bondholders instead of everyone else — individuals and businesses depending on checks from the government — would likely trigger a political backlash and potentially slow the U.S. economy as a possible recession already looms, depending on how long it lasted.

    “The notion is intellectually bankrupt,” former Treasury Secretary Jack Lew, who led the department under President Barack Obama, said in an interview.

    But even some critics of payment prioritization concede it might be the least-bad of what are all bad alternatives, such as legally questionable proposals like minting a trillion-dollar coin to pay the government’s bills. Conservatives, including Sen. Rick Scott (R-Fla.), have suggested maintaining payments on Treasury debt, Social Security, Medicare, veterans and the military.

    “Of all the unilateral options on the debt ceiling, prioritization is probably the healthiest horse in the glue factory,” Cowen policy analyst Chris Krueger said.

    Washington and Wall Street are ramping up discussions around contingency plans after the U.S. hit its legal borrowing limit on Jan. 19. Treasury is now using accounting maneuvers known as extraordinary measures to keep paying the government’s obligations. In this case, Treasury is suspending investments in government retirement accounts.

    The department hasn’t publicly outlined its ability to pick and choose whom to pay if it breached the “X-date” — the deadline when it wouldn’t have enough cash to cover all its bills. The idea came into focus when the U.S. nearly went over the cliff during the 2011 debt limit fight — an episode of brinksmanship that resulted in S&P downgrading the country’s credit rating for the first time in history.

    House Republicans spent the ensuing years investigating what Treasury could and couldn’t do.

    In a 2014 letter to the GOP chair of the House Financial Services Committee, a top Treasury official said systems at the Federal Reserve Bank of New York would be “technologically capable of continuing to make principal and interest payments while Treasury was not making other kinds of payments, although this approach would be entirely experimental and create unacceptable risk to both domestic and global financial markets.”

    The official, then-assistant secretary for legislative affairs Alastair Fitzpayne, said “no decision regarding what to do in such a situation was made during the recent debt limit impasses, and potential responses have not been tested.”

    J.W. Verret, who worked on the investigation as an aide to the Financial Services Committee, said Treasury and the Federal Reserve made available documents that showed in-depth tabletop exercises for how to prioritize payments. They indicated “there’s no inherently structural issue that stops them from doing it,” according to Verret, who reviewed the documents.

    The committee’s Republican leaders — including current Chair Patrick McHenry (R-N.C.) — told Treasury in a 2014 letter that documents prepared by the New York Fed “exhaustively detail how the department and the bank would implement any plan to prioritize payments on Treasury bonds.”

    Lew confirmed in the interview that officials ran an exercise to see whether the government could physically pay bond payments and nothing else. He still thinks it’s a bad idea.

    “As a tabletop exercise, we reached the conclusion you might be able to,” he said. “It’s never been tested in the real world. We don’t know what the cash flows required are. We don’t know how that would interact with other systems being on or off.”

    Lew, who argues that prioritization is “accepting default,” said the two presidents he worked for — Bill Clinton and Obama — never made the decision to pay bonds over other obligations.

    “Only the president can make that decision,” he said. “It’s not a decision the Treasury secretary alone can make. No president should be forced to make that decision.”

    Treasury Secretary Janet Yellen has also come out forcefully against the concept.

    “A failure on the part of the United States to meet any obligation, whether it’s to debt holders, to members of our military, or to Social Security recipients, is effectively a default,” she told reporters earlier this month.

    She added that Treasury’s systems were built to “pay all of our bills when they are due and on time, and not to prioritize one form of spending over another.”

    PIMCO, a bond-trading behemoth, has added its voice to the naysayers.

    PIMCO head of public policy Libby Cantrill said in a statement: “We take Secretary Yellen and previous Treasury secretaries – both Republican and Democratic – at their word that prioritizing payments under Treasury’s existing systems is simply not viable and should not be viewed as a feasible alternative to Congress raising the debt ceiling.”

    But warnings aren’t enough to dissuade some financial industry analysts and executives that Treasury could pull it off.

    “They have the tools available to be able to avoid a default or a disruption in the capital markets,” said Unlimited Funds CEO Bob Elliott, who previously led research at hedge fund giant Bridgewater Associates. “We would expect them to use those tools to ensure that the U.S. doesn’t experience a default.”

    Bank of America rates strategist Ralph Axel said Treasury should be more forthcoming.

    “They need to tell everybody what the real deal is with the Treasury market and whether or not this is a true massive threat or if it’s actually completely benign, which I think it is,” he said.

    But payment prioritization believers on Wall Street still argue that it carries risks.

    Even if the market for Treasury securities avoided disruption, the missed payments to other individuals and businesses could be a drag on the rest of the economy.

    Elliott said the real risk is that it goes on for months, in which case people would start to cut spending.

    “My fear is that X date is hit. The day after, not a whole lot happens and a bunch of people who are holding out say, ‘See, everything’s totally fine,’” Rajadhyaksha with Barclays said. “This is a slow burn. The longer it takes the worse it gets.”

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    ( With inputs from : www.politico.com )

  • Ex-Lebanese PM Hassan Diab charged in Beirut blast investigation

    Ex-Lebanese PM Hassan Diab charged in Beirut blast investigation

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    Beirut: Former Lebanese Prime Minister Hassan Diab has been charged with homicide with probable intent over the devastating Port of Beirut explosions in 2020 that killed at least 218 people.

    Tarek Bitar, a Lebanese judge tasked with investigating the explosions, also charged Abbas Ibrahim, chief of Lebanese General Security, State Security director Major General Tony Saliba, and former Lebanese army commander Jean Kahwaji, reports Xinhua news agency.

    Prosecutor-General Ghassan Oueidat, who was also charged in the Beirut blast investigation, announced on Tuesday his rejection of the decision issued earlier by Bitar, arguing that the judge was suspended from his investigation over a year ago.

    Bitar’s work had been interrupted for over a year following several complaints filed against him by two former ministers facing charges, forcing him to halt the probe.

    He resumed his work on Monday after a legal opinion said he should be allowed to continue his investigation.

    Primary investigations into the blast revealed that 2,750 tonnes of ammonium nitrate (equivalent to around 1.1 kilotons of TNT) stored since 2014 in a warehouse at the port caused the explosions, which injured 7,000 people, caused $15 billion in property damage, and left estimated 300,000 others homeless.

    The substance was stored at the warehouse after being confiscated by the Lebanese authorities from the abandoned ship MV Rhosus.

    The explosion was preceded by a fire in the same warehouse.

    The blast was so powerful that it physically shook the whole country of Lebanon.

    It was felt in Turkey, Syria, Palestine, Jordan, and Israel, as well as parts of Europe, and was heard in Cyprus, more than 240 km away.

    It was detected by the US Geological Survey as a seismic event of magnitude 3.3 and is considered one of the most powerful accidental artificial non-nuclear explosions in history.

    (Except for the headline, the story has not been edited by Siasat staff and is published from a syndicated feed.)

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    #ExLebanese #Hassan #Diab #charged #Beirut #blast #investigation

    ( With inputs from www.siasat.com )