Saturday, July 17, 2021
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Thursday, July 15, 2021
Astronomers spot the biggest, strangest black hole collision ever found
The cosmic pile-up produced the first black hole of its kind ever detected—and that’s not the weird part.
More than seven billion years ago, two immense black holes circled each other until they collided and merged, a cataclysm so intense that it sent ripples soaring through the fabric of space-time. In the early morning hours of May 21, 2019, Earth trembled from the vibrations sent off by this distant carnage, cluing in astronomers to the biggest cosmic bang they’d ever detected—and one that defies theoretical expectation.
The signal picked up by two observatories—LIGO in the United States and Virgo in Italy— came in the form of gravitational waves: disruptions in space-time that massive cosmic events can set into motion. This signal—named GW190521—came from a truly monstrous collision. Researchers estimate that two black holes 66 and 85 times more massive than our sun spiraled into each other, uniting to form a black hole 142 times more massive than our sun.
The event, announced today in Physical Review Letters, is by far the biggest ever detected via gravitational waves. In a fraction of a second, the merging black holes released roughly eight times more energy than that contained within our sun’s atoms, all in the form of gravitational waves. That amount of energy is like setting off more than a million billion atomic bombs every second for 13.8 billion years, the age of the observable universe.
Caltech astronomer Matthew Graham, who isn’t part of the LIGO or Virgo teams, calls the event “probably the largest explosion we’ve ever known in the universe.”
The black hole merger is causing a lot of scientific excitement, for a few reasons. First, the black hole it produced fills in a perplexing gap in our observations. Until now, researchers had found black holes tens of times more massive than our sun and supermassive black holes millions to billions times more massive than our sun, but never had confirmed one between 100 and 100,000 solar masses. Clocking in at about 142 solar masses, GW190521’s final black hole is the first ever found in this intermediate range.
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“Now we can settle the case and say that intermediate-mass black holes exist,” says LIGO team member Christopher Berry, a physicist at Northwestern University.
But for Berry and others, the more exciting black hole isn’t the resulting one. Instead, the real surprise is the more massive of the two starting black holes, the one with a mass roughly 85 times greater than our sun’s—because black holes theoretically shouldn’t exist in that range.
“This is shocking, because it’s where we expect black holes not to exist,” he says.
An unexpected black hole
The 85-solar-mass black hole is such a mystery because of how scientists think massive stars die.
For all their nuclear fury, stars are objects in balance: Gravity compresses stars inward, but as light leaves the core, it pushes the star back outward. But massive stars can sometimes burn so hot at their cores, this balancing act can get knocked out of whack. Individual particles of light called photons will pick up enough energy to turn into pairs of electrons and positrons, the antimatter equivalents of electrons. This change temporarily lowers the pressure within the sun’s core, which then causes the star to compress and heat up.
Current theory predicts that when such a star is roughly 60 to 130 times more massive than our sun, the compression and heating leads to a runaway explosion called a pair-instability supernova. Such an occurrence destroys the star so completely that the ejected debris can’t collapse into a black hole.
Weirdly, the larger black hole in the pair that created GW190521 is “smack-bang in the range you’d expect pair instability,” Berry says. In essence, it isn’t supposed to be possible for one star to create such a black hole.
“If you found a black hole that was between 52 and 133 solar masses, it could not have been synthesized as a single, one-shot corpse of a star,” explains Yale University theoretical astrophysicist Priyamvada Natarajan, an expert on black holes who wasn’t involved with the study. “Nature is telling us that there are many ways to reach these black hole masses.”
Hostile mergers?
In a companion paper published in The Astrophysical Journal Letters, the LIGO-Virgo team runs through several scenarios for how the merger—and the odd black holes involved—could have formed. The most promising idea is that at least one of the black holes, if not both of them, formed from the merger of two smaller, more garden-variety black holes.
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“That’s my favorite scenario,” says Pennsylvania State University astrophysicist Steinn Sigurdsson, who wasn’t involved with the discovery.
Certain kinds of cosmic environments could make these two-step mergers likelier. One possibility that might increase the chance of such an event is if it happened within a disk of gas orbiting a galaxy’s central supermassive black hole.
There’s tantalizing evidence that GW190521 may have taken place in such a setting. In June, Graham co-authored a study in Physical Review Letters describing a flash of light in the same patch of sky as GW190521, about 34 days after the gravitational waves rattled Earth. Graham’s team argued that the flare could have formed as the merged black hole raced through the disk of gas surrounding a supermassive black hole, heating the gas up enough to make it glow.
That said, there’s one nagging difference between the new studies and the flare results: distance. Graham’s study pinpoints the flare to a galaxy some eight billion light-years away, while the LIGO-Virgo results put the black hole merger at more than 17 billion light-years away. Graham says it’s possible that it’s just a coincidence that the locations match. “If you look at enough things, you will find these very rare things lining up,” he says.
Natarajan has another idea. In a 2014 Science study she co-authored, she calculated that in the early universe, small black holes could bulk up with extraordinary speed by randomly bouncing around gas-rich star clusters and feasting along the way. In a forthcoming study that riffs on this idea, she finds that the right kind of star cluster could give birth to a pair of black holes, each about 50 to 75 times the mass of our sun, that could then merge.
“That’s why I’m super excited!” she says.
For all the theoretical work that GW190521 is sure to spark, scientists say that its mysteries will be solved only after LIGO and Virgo detect more collisions like it. “With a single event, you can always appeal to uniquely lucky circumstances,” Sigurdsson says. “As soon as you have a handful of events, you really start squeezing the heck out of a lot of models.”
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Monday, July 12, 2021
Sunday, July 11, 2021
Six people charged following robbery at Montego Bay store
Sunday, July 11, 2021
ST JAMES, Jamaica— The St James Police arrested and charged six people with robbery with aggravation, illegal possession of firearm, shooting with intent and malicious destruction of property following a robbery at a store on King Street, Montego Bay on Saturday, July 3.
Charged are 21-year-old Tajay Ruddock, 18-year-old Shekira Loney, as well as four teenagers, all from King Street, Montego Bay in St James.
The police said that the complainants opened the store for business about 8:35 am, when four people entered, one armed with a firearm.
They allegedly proceeded to rob the complainants of several cellular phones and costume jewellery before making their escape.
The police were called and later carried out an operation in the King Street area where the suspects were taken into custody.
On Monday, July 5, the teenagers, Ruddock and Loney were all charged, following interviews.
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Friday, July 9, 2021
CONTROLLED FROM PRISON - Woman says prisoner she met online nearly ruined her life
July 09, 2021
Months after ending a relationship with a murder-convict who is serving time in one of the country's maximum security prisons, a Corporate Area woman is sounding the warning to other women who would contemplate similar escapades.
Keisha*, who is in her 20s, said that she met one-time beau, Andre* on social media, and although she was aware that he was imprisoned, that did not prevent her from starting a relationship with him. She said that the two developed a strong bond over the phone and from the numerous times she visited him in prison.
"At first he and I would pray on the phone. Wi would read di Bible together, and baay things. Him did have mi inna one fantasy world, where mi a expect baby and marriage when him come out. Whenever we on the phone is like him nuh wah come off," Keisha said.
She said Andre assured her he would be out in five years and they found creative ways, such as phone sex, to satisfy their sexual desires.
Affection from behind bars
It is unclear who Andre managed to get a phone in his cell as under Jamaican laws, it is illegal for such instrument to be in the possession of prisoners. Despite the prohibition, it is not uncommon for contrabands such as phones to end up in penal institutions. More than 2,000 phones were seized in the country's prisons last year.
Keisha said that her then boyfriend found ways to prove his love and affection from behind bars. She said that he showered her with gifts, including jewellery, expensive clothes, and even cash to start her business.
"I was being well-taken care of," she said of the relationship that continued for three years.
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However, she quickly pointed out that despite her man being behind bars, she rarely had freedom to do as she pleased.
Many times I was somewhere and all of a sudden he was calling me, telling me that I must go home. Him would call over 100 times straight, if him cyah get mi on the phone," she said.
Keisha said that he became so possessive that he would, at times, send someone to her home to find out what was happening to her if he could not reach her by phone.
According to Keisha, she only got peace after she became a Christian and decided to ignore the 'things of the world'. She changed her telephone number and cut off all forms of communication with Andre.
Looking back, Keisha said that she considers herself a lucky woman, adding that her decision to follow Jesus saved her from a situation that could have become deadly.
*Names changed to protect identity
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Thursday, July 8, 2021
Two Haitian Americans detained in slaying of Haiti president
July 08, 2021
PORT-AU-PRINCE, Haiti (AP) — Two men believed to be Haitian Americans — one of them purportedly a former bodyguard at the Canadian Embassy in Port au Prince — have been arrested in connection with the assassination of Haiti’s president, a senior Haitian official said Thursday.
Mathias Pierre, Haiti’s minister of elections, told The Associated Press that James Solages was among six people arrested in the 36 hours since the brazen killing of President Jovenel Moise by gunmen at his home in the pre-dawn hours Wednesday.
Four other suspected assailants were killed and two are still missing, Pierre said.
Pierre would not provide additional details about Solages’ background, nor would he provide the name of the second Haitian-American he said was arrested.
Solages describes himself as a “certified diplomatic agent,” an advocate for children and budding politician on a website for a charity he established in 2019 in south Florida to assist residents.
On his bio page for the charity, Solages said he previously worked as a bodyguard at the Canadian Embassy in Haiti. Calls to the foundation and Solages’ associates at the charity either did not go through or were not answered.
“The pursuit of the mercenaries continues,” said Léon Charles, director of Haiti’s National Police, in announcing the arrest of suspects. “Their fate is fixed: They will fall in the fighting or will be arrested.”
Witnesses said two suspects were discovered hiding in bushes in Port-au-Prince on Thursday by a crowd, some of whom grabbed the men by their shirts and pants, pushing them and occasionally slapping them.
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Police arrived shortly afterward to arrest the men, who were sweating heavily and wearing clothes that seemed to be smeared with mud, an Associated Press journalist at the scene said. Officers placed them in the back of a pickup truck and drove away as the crowd ran after them to the nearby police station.
Once there, some in the crowd chanted: “They killed the president! Give them to us. We’re going to burn them!”
One man was overheard saying that it was unacceptable for foreigners to come to Haiti to kill the country’s leader, referring to reports from officials that the perpetrators spoke Spanish or English.
The crowd later set fire to several abandoned cars riddled with bullet holes that they believed belonged to the suspects, who were white men. The cars didn’t have license plates, and inside one of them was an empty box of bullets and some water.
At a news conference Thursday, Charles, the police chief, asked people to stay calm, go home and let police do their work as he warned that authorities needed evidence they were destroying, including the burned cars.
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Officials did not provide any details about the suspects, including their nationalities, nor did they address a motive or say what led police to them. They said only that the attack condemned by Haiti’s main opposition parties and the international community was carried out by “a highly trained and heavily armed group.”
Prime Minister Claude Joseph assumed leadership of Haiti with the backing of police and the military and on Thursday asked people to reopen businesses and go back to work as he ordered the reopening of the international airport.
On Wednesday, Joseph decreed a two-week state of siege following Moïse’s killing, which stunned a nation grappling with some of the Western Hemisphere’s highest poverty, violence and political instability.
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Wednesday, July 7, 2021
Family happy to escape extortionists in Spanish Town
Wednesday, July 07, 2021
OCHO RIOS, St Ann — Patrick Green still has a bullet lodged in his back and another in his left hand but he is convinced that he is abundantly blessed.
The 53-year-old says he fled extortionists who preyed on him when he ran a restaurant in St Catherine. He and his wife Yvonne now operate a food truck in the much more peaceful Ocho Rios.
Ten years ago, Green said, two men demanded cash from him as 'protection' for the small restaurant he had operated for 15 years on Marl Road in Spanish Town.
“Dem use to come and ask for money and I give them. Then soon after they started to demand some big money and I told them I couldn't afford [what] dem asking for,” he explained.
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In what he described as his most traumatic experience yet, he said, he was shot three times.
“I was hospitalised for 18 days and even now me still have two of the bullets in my body. One lodge in my back and one in my hand. Is just God save me because the guy pointed the gun straight to my face and the bullet end up fly through my hand. Then him just put it down to my lower half and start to shoot,” Green recalled. “Me and nobody never have nothing else, so is just the money the boys was hungry for.”
Even today he feels betrayed by the community he once called home.
“We lived in that community all my life so to leave there was not easy, because we had to start afresh making new friends and all; but it is going good so far,” Yvonne Green told the Jamaica Observer. “We don't complain though because it is for our peace of mind and a better environment for our children.”
The Greens now serve up hot meals from the back of their truck to loyal customers.
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“Back home, business was better because it was faster and we never had to pay rent for house and all. But, we have our supporters too and we make ends meet,” Yvonne Green said. “I'm also happy for where I am now because at one point, I remember I never use to come out because if I hear any type of loud sound I would jump and feel scared.”
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New York declares gun violence a 'disaster emergency'
Wednesday, July 07, 2021
NEW YORK, United States (AFP) — New York's governor issued new emergency measures to fight gun violence yesterday as he made it easier for shooting victims to sue gun manufacturers.
Andrew Cuomo declared gun violence a “disaster emergency” against a backdrop of rising crime in New York City and across the United States. He unveiled special measures aimed at curbing an increase in shootings that have beset New York City since the outbreak of the coronavirus pandemic in spring last year.
If you look at the recent numbers, more people are now dying from gun violence and crime than COVID,” Cuomo said in a press release.
“This is a national problem, but someone has to step up and address this problem because our future depends on it,” he added. The governor said he was appointing a special coordinator for the prevention of gun violence attached to the state's health services. The office will have to coordinate with social services, prison services, police forces and others. A special police unit to fight the trafficking of firearms from other states will also be created.
New York has some of the strictest gun laws in America but it is easy to travel and buy weapons in the neighbouring states of Pennsylvania and New Jersey, which are more laxCuomo also announced US$138 million of investment in intervention and prevention programmes, including US$76 million to create jobs for young people deemed most at risk.
The governor signed two laws into effect yesterday as well.
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One “public nuisance liability” law makes it easier for civilians to bring lawsuits against gun makers and dealers. Manufacturers have been largely exempt from liability by federal law, which the New York law will circumvent. The second is designed to prevent those wanted for crimes from being able to acquire a weapon.
These measures come as New York and the US face a sharp rise in crime since last summer.
The country's major cities saw a 30 per cent increase in homicides in 2020, with Republicans accusing Democratic leaders of negligence.
President Joe Biden introduced measures on June 23 to limit the flow of firearms but a divided Congress makes it difficult for Democrats to pass laws.
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Tuesday, July 6, 2021
Fatal twist
Man who called police cries after cop kills his babymother after she attacked him
Tuesday, July 06, 2021
Thursday, July 1, 2021
Police confirm pregnant St Ann woman, abducted, beaten
Wednesday, June 30, 2021
ST ANN, Jamaica— The Jamaica Constabulary Force (JCF) has released more information regarding an incident in which a pregnant woman was allegedly abducted in this parish yesterday.
The JCF, through its Corporate Communications Unit (CCU), told OBSERVER ONLINE that the woman was travelling in a taxi when she was abducted and beaten.
"There was an incident yesterday when the woman went into a taxi and she was taken to a location where she didn't want to go. She was assaulted. She managed to escape and go to hospital," the CCU said.
The woman, who buys and sells goods in St Ann, was still in hospital up to this morning.
She is involved in a matter that is currently before the courts.
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William and Harry reunite for Diana statue tribute
William and Harry reunite for Diana statue tribute
Harry, who reportedly flew back from California last week, was last in Britain in April for the funeral of his grandfather, Queen Elizabeth II's husband Prince Philip.
He was seen talking to William after the service at Windsor Castle. But there has been little indication of any thaw in their frosty ties.
William's wife, Kate, has said she has yet to be introduced to Harry and Meghan's daughter, Lilibet Diana, who was born last month.
And last week, royal officials appeared to contradict Harry's claims that he had been cut off financially since his move, as they published the latest accounts.
Omid Scobie, who wrote a sympathetic biography of Harry and Meghan about their shock move to the United States, said Thursday's meeting could help mend fences.
The statue unveiling could be "the icebreaker that is needed", he told reporters in London recently. "There's a lot to be discussed.
"William and Harry -- and, it has been reported, Meghan -- are expected to meet again in June next year for celebrations of their grandmother's 70 years as queen.
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