As was foretold by the ancients
Similar Articles: Emily Ratajkowski politico Navy Yard shooting paulina gretzky Gia Allemand
Sunday, October 20, 2013
Apple Will Announce the New iPads on Oct. 22nd
Similar Articles: Emily Ratajkowski politico Navy Yard shooting paulina gretzky Gia Allemand
Superbright Supernovas' Cause Potentially Revealed
The cause of a mysterious, long-lasting, superbright form of supernova, the most energetic stellar explosion in the universe, may now have been discovered, astronomers say.
Surprisingly, these outbursts may be driven by the birth of magnetars, dead stars that rank among the most powerful magnets in the cosmos, according to a study published online today (Oct. 16) in the journal Nature.
Supernovas result from the deaths of stars. These explosions can briefly outshine all of the other stars in their galaxies. [Supernova Photos: Great Images of Star Explosions]
More than a decade ago, scientists first detected a new, extremely rare class of supernova. These incredibly bright explosions, known as superluminous supernovas, are up to 100 times brighter than other types of stellar outbursts.
A number of these explosions fade very slowly, matching theoretical models of what are called pair-instability supernovas. Astrophysicists suspected that within the extremely massive stars thought to give rise to pair-instability supernovas — ones more than 140 times the mass of the sun — conditions are just right for gamma-rays, the highest-energy form of light, to convert into pairs of electrons and their antimatter counterparts, known as positrons.
These gamma-rays normally exert pressure that helps support the star against the crushing effects of its own gravity. However, as gamma-rays get converted to matter, the star loses this support and collapses in on itself. This, in turn, causes a runaway explosion that completely obliterates the star.
Scientists had suggested these slow-fading explosions generate huge amounts of radioactive matter, enough to equal several times the mass of the sun. This debris produces superluminous supernovas' slowly dimming light through radioactive decay, according to the idea.
Now, however, researchers have discovered two superluminous supernovas whose slow-fading light was apparently not generated by radioactive decay. Instead, these supernovas may be caused by a type of explosion that creates extremely magnetic neutron stars known as magnetars.
Astronomers discovered two superluminous supernovas named PTF 12dam and PS1-11ap, which lie about 1.6 billion light-years and nearly 10 billion light-years from Earth, respectively. The light from these explosions was blue in color and increased rapidly to their peaks over the course of about two months, whereas pair-instability supernovas should be redder and increase more slowly.
Computer models suggest explosions that create magnetars could generate the light patterns seen from these newfound supernovas. Magnetars are a kind of neutron star, remnants of dead stars that are only about as large as a city but contain at least as much mass as the sun.
Magnetars possess magnetic fields up to 5,000 trillion times more powerful than that of the Earth. Magnetars that expel glowing matter in vast amounts more than 10 to 16 times the mass of the sun during their births could explain these newfound supernovas, researchers said.
"It was exciting to find such a great match to the predictions of the magnetar model, which also fits most of the fast-declining superluminous supernovas," study lead author Matt Nicholl, an astronomer at Queen's University Belfast in Northern Ireland, told SPACE.com. "Two types of supernova which previously looked very different can actually both be explained quite nicely by this model."
The brightness and colors of PTF 12dam and PS1-11ap are similar to another recently observed superluminous supernova, SN 2007bi, originally suggested to be a pair-instability explosion. This suggests that pair-instability explosions may be even rarer than before thought, accounting for less than one out every 100,000 supernovas.
SN 2007bi was only thought to be one of a handful of pair-instability supernovas. These new findings could banish pair-instability supernovas back to the realm of theoretical possibility, although they do not rule them out, Nicholl said.
Follow us @Spacedotcom, Facebook or Google+. Originally published on SPACE.com.
Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Source: http://news.yahoo.com/superbright-supernovas-cause-potentially-revealed-170823457.html
Related Topics: drew brees broncos Nothing Was The Same Leak rosh hashanah pga championship
FDA rejects again Alimera eye implant; shares slide
(Reuters) - Alimera Sciences Inc said U.S. health regulators rejected for a third time its eye implant device due to safety concerns, sending its shares down 39 percent before the bell.
Shares of pSivida Corp, which sold the rights to Iluvien to Alimera in 2005 but is in line for a 20 percent share of profits, almost halved.
Iluvien, used to treat retinal swelling brought on by diabetes, has been approved by some European regulators but the U.S. Food and Drug Administration has rejected it three times in the past three years.
The FDA raised concerns about the eye implant's safety profile in its complete response letter rejecting marketing approval, the company said on Friday. Marketing approval is the final OK needed to start selling a medical device in the United States.
The FDA also referred to deficiencies at the facility where Iluvien is manufactured, Alimera said.
Alimera said it did not believe that these deficiencies will affect its European commercial supply.
The FDA suggested at least 12 months of follow-up for all enrolled patients in a new trial and a meeting with the regulator's advisory panel to address the deficiencies.
The panel would advise whether a patient population can be identified in which the benefits of the drug might outweigh the risks, the FDA said. The panel will convene on January 27.
Iluvien is a sustained-release implant used to treat vision impairment associated with chronic diabetic macular oedema.
(Reporting by Shailesh Kuber; Editing by Sriraj Kalluvila and Rodney Joyce)
Source: http://news.yahoo.com/fda-denies-approval-alimeras-eye-implant-shares-fall-112712681--finance.html
Similar Articles: michigan football darren sproles rafael nadal
Why College Freshman May Feel Like Imposters On Campus
Psychologist Greg Walton has found that a simple intervention can help many students get the most out of college. The trick is in helping students see that setbacks are temporary, and often don't have larger implications.
Category: What Time Does Ios 7 Come Out Under the Dome anthony weiner bachelorette Rosalind Franklin
Saturday, October 19, 2013
Jen, Matthew and Jared Premiere "Dallas Buyer's Club" in Beverly Hills
Attracting a host of major celebrities at the Academy of Motion Picture Arts and Sciences tonight (October 17), some of the biggest names in Hollywood were on hand to show off their latest work at the “Dallas Buyers Club” premiere in Beverly Hills.
The magnificent Jennifer Garner showed off her iconic smile in a long navy dress as she posed alongside her hunky co-stars Matthew McConaughey and Jared Leto.
McConaughey’s lovely wife, Camila Alves also showed up to the premiere, dressed to the nines in a snowy white dress and shawl, complete with matching heels.
Per the synopsis: “Dallas Buyer’s Club” tells “the story of Texas electrician Ron Woodroof and his battle with the medical establishment and pharmaceutical companies after being diagnosed as HIV-positive in 1986, and his search for alternative treatments that helped established a way in which fellow HIV-positive people could join for access to his supplies.”
In related news, Matthew McConaughey is hard at work on two upcoming movies, entitled “The Wolf of Wall Street,” slated for release at the end of this year, and “Interstellar,” set for 2014. Jen Garner is also coming at us with three new movies: “Imagine,” “Draft Day,” and “Alexander and the Terrible, Horrible, No Good, Very Bad Day,” all premiering in 2014.
Source: http://celebrity-gossip.net/dallas-buyers-club/jen-matthew-and-jared-premiere-dallas-buyers-club-beverly-hills-944966
Category: Dallas Latos Dancing With the Stars 2013 Romain Dauriac VMA 2013 Hunter Hayes
Quentin Tarantino Defends Harvey Weinstein: 'Take the Good With the Bad'
LYON -- Days after director Olivier Dahan lashed out at Harvey Weinstein over cuts to the forthcoming Grace of Monaco, Quentin Tarantino deflected additional criticism of the producer.
"You have to take the good with the bad," the Django Unchained director told reporters on Saturday.
In an interview in the French newspaper Liberation, Dahan had vented about Weinstein."It's right to struggle, but when you confront an American distributor like Weinstein, not to name names, there is not much you can do," he said.
STORY: 'Grace of Monaco' Director Bashes Harvey Weinstein's 'Pile of Shit' Edit Plans
In an emotional Prix Lumiere ceremony on Friday, Weinstein cited Tarantino as building Miramax and saving The Weinstein Company.
The following day during an afternoon press conference, Tarantino credited Weinstein for much of his career despite his sometimes contentious relationship with directors. "Harvey offered me a home and a family to make my films. It is a home and a family, but like a lot of homes and families it can be pretty f---ed up sometimes," he joked. "C'est la vie!"
"Nevertheless, at the end of the day, I don’t think my career would have been able to stay completely on the trajectory of my own whims that it has without Harvey’s constant backing," he added.
"We have a really terrific partnership. And frankly there’s a few people in the early days that if I had never met them and if they hadn’t found something in my work I would never have made a movie," he said, citing his longtime collaborators. "Harvey Keitel is one, Richard Gladstein at Live Entertainment and Lawrence Bender is one." Keitel and Bender were present at the award ceremony Friday night, where they paid an emotional tribute to the director.
He also kept uncharacteristically tight-lipped about the anticipated next Kill Bill project or his next film. "One of the problems of my career has been that I tend to have a big mouth, so this time I won't. But I am tinkering," he said, adding that he is also writing a film book as well as finishing a script.
The avid cinephile reminisced about the early days of traveling the world from film festival to film festival. "It's film festivals that created me, that launched me, especially in that first year with Reservoir Dogs going all around the world. I would go to the Sao Paolo film festival and do a bunch of interviews in Brazil," he said. "So when it came time for Miramax to sell the foreign rights they knew who I was and wanted to buy the rights. Miramax was unaware of how popular I had become in all these countries I had visited and they all wanted the Tarantino film."
"I’m a little discouraged with film festivals these days because of digital projection, because I remember going to film festivals and it was always 35 mm and you had to get that print and people always ended up doing it and it was exciting," he said. "Now going to other countries and watching everything on digital is depressing to me."
Tags: msnbc affordable care act new orleans saints Miss World 2013 big brother
Officials: Bombing at mosque kills Afghan governor
KABUL, Afghanistan (AP) — A bomb planted inside a mosque killed the governor of Afghanistan's eastern Logar province as he was delivering a speech Tuesday morning to mark the Muslim holiday of Eid al-Adha, officials said.
The explosion at the main mosque in the provincial capital of Puli Alam killed Governor Arsallah Jamal and wounded 15 people — five of them critically, said the governor's spokesman, Din Mohammad Darwesh.
Jamal, 47, was a close confidant of President Hamid Karzai and served as his campaign manager during the 2009 presidential elections. He also served as governor of eastern Khost province until he was appointed to his current post in Logar in April.
A high-profile target, he had survived a number of assassination attempts in the past, including with suicide bombings.
No one immediately claimed responsibility for the attack but the Taliban have been targeting Afghan officials, military and NATO troops as part of their campaign to retake territory as international troops draw down ahead of a full pullout at the end of 2014.
Tuesday's explosion took place as Jamal was speaking inside the mosque to worshippers gathered for one of Islam's holiest days, said Logar's deputy police chief, Rais Khan Abbul Rahimzai.
The bomb was apparently planted inside the microphone in the front part of the mosque, said two officials, speaking on condition of anonymity because they were not authorized to speak to the media.
Jamal was recently in the spotlight following his revelation that a senior commander of the Pakistani Taliban was taken into custody by American forces in Logar province on Oct. 5.
U.S. officials confirmed that Latif Mehsud, a leader of the Tehrik-e-Taliban Pakistan, or TTP, was captured by U.S. forces in a military operation.
At the time, Jamal told The Associated Press that Mehsud was captured as he was driving along a main highway in Mohammad Agha district. The road links the province with the Afghan capital, Kabul.
Source: http://news.yahoo.com/officials-bombing-mosque-kills-afghan-governor-053023529.html
Tags: Laura Prepon Lincoln Memorial
Subscribe to:
Posts (Atom)