Weird high-energy flare made by spitting black hole


































GLOBS of plasma spat out by black holes can trigger the brightest flashes of lightMovie Camera in the universe.













Gamma-ray bursts are high-energy flares that mostly originate billions of light years away, making it hard to see how they are created. In November 2011, NASA's Fermi satellite saw a gamma-ray burst coming from the galaxy 4C +71.07, which sits about 10.5 billion light years away. The galaxy was also being watched by the Very Long Baseline Array, a radio telescope network that can see small features at a distance.












The supermassive black hole at the galaxy's centre is feeding on surrounding matter, causing it to fire high-speed jets of particles. The radio array showed that, around the same time as the flare, the black hole spat out a knot of plasma that travelled up the jet at near the speed of light.












Electrons in the knot probably collided with and energised light from a slower-moving part of the jet, producing the gamma rays, says Alan Marscher of Boston University, who presented the work at a recent astronomy meeting in California. It's still a mystery, though, what made the black hole erupt.


















































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150 dead in Brazil nightclub fire: media






RIO DE JANEIRO: 150 people died early Sunday in a fire that broke out at a nightclub in the southern Brazilian city of Santa Maria, local media reported.

Santa Maria fire chief Guido de Melo said there was panic after the fire started and many revellers got trampled.

According to media reports, the fire erupted after 2:00 am (0400 GMT) when the nightclub hosted a university party featuring a rock band.

The band used pyrotechnics as part of its show, O Globo newspaper reported on its site.

"We have just taken the fire under control," Colonel Silvia Fuchs of the local fire department was quoted by the G1 website as saying. "Now we are removing the bodies."

Family member are gathering outside of the burned-down building in the hope of getting news of their loved ones.

- AFP/xq



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The ultimate gall of a heartless iPhone thief



An object of desire?



(Credit:
CNET)


One should never expect justice in life.


The best one can hope for is poetry.


And yet, just once or twice, both manage to collide with a deliciousness that moves the soul.


Here is the tale of a teenage girl who had her iPhone stolen.



As The New York Times composes it, the girl had her
iPhone 4S ripped from her by a teenage boy in Brooklyn's notoriously difficult Prospect Park.


iPhone theft is rather popular in New York. Indeed, Mayor Bloomberg recently suggested that it's responsible for an increase in crime in the city.


Anyway, the iPhone-less girl collared a couple of policemen, but the miscreant was not to be found.


However, the thief then decided that he'd try to get some money for the phone. So he met a man on a Flatbush street -- as you do.


The man asked to take a look at the phone. Perhaps he wanted to see whether Siri was still inside.


Then, he ran off with it.


Yes, this is slightly poetic. But we've only just begun.


You see, the boy thief was not very happy. After all, he'd had his recently acquired property stolen. So he went off in search of a policeman to report the crime.


I pause for your sound effects.


Thank you.



More Technically Incorrect


The police reacted with unusual efficiency. They corralled both the boy and the man who had taken Siri from him. But they still assumed the boy was the victim.


Are you ready for verse three?


The phone rang. It was the girl trying to do a deal to get her phone back. The police realized something might be amiss here. This seemed to be a miss who actually owned the phone.


So they waited for her to arrive in Flatbush. She recognized the boy's sneakers. They were pink.


I pause for your further sound effects.


The police decided it was time to play Solomon. They would slice the phone in two if one party didn't renounce their claim to the phone.


No, wait. They asked both the girl and the pink-sneakered boy to unlock the phone with the PIN code.


You're already there, aren't you? Both the actual thieves were brought to justice -- the actual kind. And the girl got her phone back.


There are several morals to this story.


One, don't steal iPhones if you're wearing pink sneakers.


Two, if someone does unto you as you have done unto someone else, take it onto the chin. It will help you understand the feelings of others.


Three, if you're the kind of New Yorker who thinks they can always get away with it, well, you can't. Not always.


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Pictures: The Story Behind Sun Dogs, Penitent Ice, and More

Photograph by Art Wolfe, Getty Images

If you want the beauty of winter without having to brave the bone-chilling temperatures blasting much of the United States this week, snuggle into a soft blanket, grab a warm beverage, and curl up with some of these natural frozen wonders.

Nieve penitente, or penitent snow, are collections of spires that resemble robed monks—or penitents. They are flattened columns of snow wider at the base than at the tip and can range in height from 3 to 20 feet (1 to 6 meters). The picture above shows the phenomenon in central Chile. (See pictures of the patterns in snow and ice.)

Nieve penitente tend to form in shallow valleys where the snow is deep and the sun doesn't shine at too steep an angle, said Kenneth Libbrecht, a physicist at the California Institute of Technology in Pasadena who studies ice crystal formation.

As the snow melts, dirt gets mixed in with the runoff and collects in little pools here and there, he said. Since the dirt is darker in color than the surrounding snow, the dirty areas melt faster "and you end up digging these pits," explained Libbrecht.

"They tend to form at high altitude," he said. But other than that, no one really knows the exact conditions that are needed to form penitent snow.

"They're fairly strong," Libbrecht said. "People have found [the spires] difficult to hike through."

Jane J. Lee

Published January 25, 2013

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Obama: Gun-Control Advocates Have to Listen More













President Barack Obama says gun-control advocates have to do a little more listening than they do sometimes in the debate over firearms in America.



In an interview with The New Republic, Obama says he has "a profound respect" for the tradition of hunting that dates back for generations.



"And I think those who dismiss that out of hand make a big mistake. Part of being able to move this forward is understanding the reality of guns in urban areas are very different from the realities of guns in rural areas," he says.










Gun Owners Rally State Capitals Across Country Watch Video









Andrew Cuomo Signs New York Gun Control Law, Obama Readies Federal Plan Watch Video






Obama has called for a ban on military-style assault weapons and high-capacity ammunition magazines and is pushing other policies following the mass shooting last month at an elementary school in Newtown, Conn. In response, gun-rights advocates have accused Obama and others of ignoring the Second Amendment rights of Americans.



The president says it's understandable that people are protective of their family traditions when it comes to hunting.



"So it's trying to bridge those gaps that I think is going to be part of the biggest task over the next several months. And that means that advocates of gun control have to do a little more listening than they do sometimes," he says.



Has Obama himself ever fired a gun?



"Yes," the president says, "in fact, up at Camp David, we do skeet shooting all the time."



His daughters don't shoot skeet at the presidential retreat in Maryland, he adds, "but oftentimes guests of mine go up there."



The interview appears in the Feb. 11 issue of The New Republic.



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Bandwidth-sharing app brings connectivity to all



































MAXED out on your phone's data plan? Stuck in a dead zone? Your neighbour can help. A new app lets users share mobile internet connections with anyone around them, helping the data-starved avoid roaming charges and steep overage fees.












Called AirMobs, the app shares a phone's data plan with others through the phone's Wi-Fi signal. For every kilobyte shared, AirMobs awards a data credit that can be used later.












"The idea is to extend the principle of 'give and you shall receive' to create an incentive for people to share their data plan," says Eyal Toledano at the Massachusetts Institute of Technology, who developed the app.


















AirMobs aims to help users avoid high charges by connecting to the internet via the phones around them. In places where perhaps only one carrier has coverage, it can provide connectivity for all.












"You can use your credit in an area where you don't have a connection," Toledano says. "Maybe the guy next to you has great coverage."











Users can choose how much of their data plan they share. AirMobs runs in the background, regularly checking the phone's battery life and the strength of the cellular connection. It also detects movement, as the signal is more stable when the phone is stationary. When conditions are right, the Wi-Fi transmitter switches on automatically, and others can then connect.













Toledano says he has successfully tested the system within MIT, but he is hesitant to release it to the Google Play Store for fear that cellular carriers will object.












Bill Menezes, an analyst at Gartner in Denver, Colorado, agrees that's a danger. "Verizon Wireless, for example, specifically prohibits resale of its services to a third party," he says. "The question is how they would enforce it against an app like this."












"If networks decided to collaborate and let all devices roam freely, AirMobs would be less needed," Toledano says. "But where operators aren't collaborating, user-to-user collaboration can fix the situation."




















































If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.




































All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.


If you are having a technical problem posting a comment, please contact technical support.








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French-led troops seize airport in Mali Islamist bastion






BAMAKO: French-led forces Saturday wrested control of the airport at the Islamist stronghold of Gao, 1,200 kilometres (750 miles) northeast of the Mali capital Bamako, a security source said.

"Malian and French security forces have secured the airport of Gao and the Wanbary bridge. The two strategic points are under their control," the Malian source said.

The airport is located about six kilometres east of Gao while the bridge lies on the southern entrance to the town, held by the Al Qaeda-linked Movement for Jihad and Oneness (MUJAO) since June.

The security source did not mention any fighting.

Other sources said the Islamists had left the town after the start of a French-led military offensive on January 11 to stop a triad of Al Qaeda-linked groups from pushing down from their northern bastions towards Bamako.

In April last year, Gao, Timbuktu and Kidal were seized by an alliance of Tuareg rebels -- who wanted to declare an independent homeland in the north -- and hardline Islamist groups.

The Islamist groups include MUJAO, Ansar Dine, a homegrown Islamist group, and Al-Qaeda in the Maghreb, of which MUJAO is an offshoot.

The Islamists quickly sidelined the Tuaregs to implement their own Islamic agenda. They imposed a harsh interpretation of sharia law, flogging, stoning and executing transgressors, forbidding music and television and forcing women to wear veils.

- AFP/ck



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Review: While "jOBS" fawns over subject, film falls flat



Ashton Kutcher as Steve Jobs in "jOBS."

Ashton Kutcher as Steve Jobs in "jOBS."



(Credit:
Five Star Feature Films)


PARK CITY, UTAH--The eagerly awaited biopic "jOBS" opens in 2001, when Apple's iconic co-founder arrives at Town Hall on Apple's Cupertino campus with good news. A secret team, Steve Jobs tells his employees, has built a product that will revolutionize the way everyone listens to music. Before he can even show them the iPod, the employees have sprung to their feet, wild-eyed and ecstatic, and their thunderous applause is eventually drowned out only by strings swelling in the background. It's a scene that sets the tone for all that is to follow: for most of the film's two hours, "jOBS" rarely stops clapping for its subject.


The team behind "jOBS," which was directed by Joshua Michael Stern, began working on the project shortly before Jobs retired from Apple in 2011. The script by first-time screenwriter Matt Whiteley covers Jobs' life from 1974, when Jobs attended classes at Reed College in Oregon, to 2001, when he announced the
iPod to Apple employees. Along the way "jOBS" covers most of the major milestones of its subject's time at Apple: the Apple I, the Apple II, the Lisa, and the Macintosh all are shown in development, as Jobs (a hard-working Ashton Kutcher) works to bring his vision of personal computing to the masses. Jobs hand-picks John Sculley to become Apple's CEO, hoping his marketing expertise will help the company overtake IBM in the PC market. But Sculley disappoints Jobs, who alienates his allies on Apple's board of directors and is ousted from the company he started. Only Apple's near-death experience in 1997 is enough to bring him back to Apple -- first as an adviser, then as an "interim" CEO -- and with the success of the Bondi blue iMacs, Apple was ascendant once again.


It's a story that will be familiar to readers of Walter Isaacson's recent Jobs biography or any number of other histories of the company. The opportunity "jOBS" had was to render these legendary events of Silicon Valley's history on screen, and to dramatize the contradictions of a man who remained unknowable even to some of those closest to him.


The movie gives it a shot. Kutcher drew skepticism when he was announced as the film's lead, despite an uncanny resemblance to the man he would be playing. But he throws himself into the role, inhabiting Jobs in his mannerisms and gestures while doing a more than creditable impression of the man's voice. Kutcher also captures Jobs' deliberate, slightly hunched-over walk. At moments, as during an enjoyable sequence in which Jobs recruits members for the Macintosh team, Kutcher disappears into the role.


The filmmakers do show Jobs being a jerk: he sleeps around, he yells at people, he parks in handicapped spaces. He persuades Steve Wozniak (Josh Gad) to perform crucial work for him, but lies about how much he is being paid, so he can dramatically underpay his best friend. An hour into the movie, he fires someone during an argument over font availability on the Lisa.


Yet the filmmakers are more interested in showing Jobs going about the work of being a genius. Over and over again, minor characters explain to him why something can't be done; Kutcher-as-Jobs smiles enigmatically and waves away their concerns. (It is left to someone else, far off screen, to turn his visions into reality.) We watch Jobs out-negotiate a computer parts store owner, lecture the team making the Lisa, and ride to the rescue of the Macintosh. Each time, he speaks of how the technology Apple is building will improve the lives of average people. Co-workers argue with him, but they never get anywhere, because their parts are poorly written and the filmmakers have no interest in showing their subject being wrong about his work. The film mentions Lisa's failure but has no interest in what part Jobs played in that failure; all Apple failures in "jOBS" are portrayed as the result of conservative, backward-thinking executives beholden only to their shareholders. The result is that the viewer spends two hours watching cardboard cutouts lose arguments to Ashton Kutcher.


Kutcher speaks fully 40 percent of the lines in "jOBS." Unfortunately, he has almost no one to play off of. Dermot Mulroney, as early Apple investor Mike Markkula, shakes his head at Jobs' excesses without ever really challenging him. J.K. Simmons, as the Apple board chairman who oversees Jobs' ouster, is a cartoon villain. Women in the film barely exist; an actress playing Chris-Ann Brennan has a single under-written scene informing a young Jobs that she is carrying his baby; years later in the film, a small scene shows Jobs at home with his wife. Only Gad, as Wozniak, gets a scene standing up to the great man -- as Woz quits Apple, he criticizes Jobs for losing his humanity amid a single-minded pursuit of making great products. It's something even Jobs' staunchest admirers have to wrestle with, and the film could have used more of that.


Others will write of the things "jOBS" omits, gets wrong, or simply avoids. My primary disappointment was in how shallow the film felt, given the extensive historical record. In the early days Jobs' co-workers had to wrestle with a man who smelled bad, who cried often, who yelled constantly, who missed deadlines, who overspent his budget by millions. He did it in service of products we love and use daily, and yet his obsessions took a toll on those around him. It also inspired others to do the best work of their lives, pushing themselves further than they ever imagined they can go. There is great drama to be found in all that, but it is not to be found in the saccharine "jOBS."


Read More..

Pictures: The Story Behind Sun Dogs, Penitent Ice, and More

Photograph by Art Wolfe, Getty Images

If you want the beauty of winter without having to brave the bone-chilling temperatures blasting much of the United States this week, snuggle into a soft blanket, grab a warm beverage, and curl up with some of these natural frozen wonders.

Nieve penitente, or penitent snow, are collections of spires that resemble robed monks—or penitents. They are flattened columns of snow wider at the base than at the tip and can range in height from 3 to 20 feet (1 to 6 meters). The picture above shows the phenomenon in central Chile. (See pictures of the patterns in snow and ice.)

Nieve penitente tend to form in shallow valleys where the snow is deep and the sun doesn't shine at too steep an angle, said Kenneth Libbrecht, a physicist at the California Institute of Technology in Pasadena who studies ice crystal formation.

As the snow melts, dirt gets mixed in with the runoff and collects in little pools here and there, he said. Since the dirt is darker in color than the surrounding snow, the dirty areas melt faster "and you end up digging these pits," explained Libbrecht.

"They tend to form at high altitude," he said. But other than that, no one really knows the exact conditions that are needed to form penitent snow.

"They're fairly strong," Libbrecht said. "People have found [the spires] difficult to hike through."

Jane J. Lee

Published January 25, 2013

Read More..

Cops Using More Private Cameras to Nab Suspects













Philadelphia detectives were able to quickly make an arrest in the murder and burning of a female pediatrician by viewing surveillance video of nearby stores and a hospital that captured the suspect entering the doctor's home and later getting into his truck.


In the hours after Dr. Melissa Ketunuti's body was found strangled and burning in her basement, city's Homicide Task Force collected surveillance footage from a coffee shop, drug store and hospital overlooking Ketunuti's block. It was footage taken from Ori Feibush's coffee shop that allowed cops to identify Smith.


The suspect, an exterminator named Jason Smith, soon confessed to detectives, police said.


Lately a range of crimes have been solved by the seemingly ubiquitous security videos maintained by private companies or citizens, and investigators have been able to quickly apprehend suspects by obtaining the video, deftly turning private cameras into effective police resources.








Philadelphia Police Arrest Suspect in Doctor's Killing Watch Video









Pa. Doctor Killing: Person of Interest in Custody Watch Video







Private surveillance cameras have become so pervasive that the face of a suspect who allegedly shot a Bronx, N.Y., cab driver in a botched robbery on Jan. 14 was splashed throughout the media within days because the cabbie had rigged his vehicle with a camera.


The New York Police Department arrested Salvatore Perrone after he was caught on surveillance video recorded near two of three shopkeeper slayings in Brooklyn, N.Y., in November. He has since been charged with murder.


And in Mesa, Ariz., surveillance footage taken in November by resident Mitch Drum showed a man rolling on the ground trying to extinguish flames that had engulfed his shirt, which had caught fire while he was allegedly siphoning gas from a car by Drum's house. The man was arrested.


Though surveillance cameras have been a staple of security since a network of government operated cameras dubbed the "ring of steel" was introduced in London in the early 1990s, police have recently launched programs to partner with more businesses.


In Philadelphia, police have launched a program for businesses to register private cameras with the department. According to the SafeCam website, businesses will only be contacted when there is a criminal incident in the vicinity of the security camera. At that point, police will request a copy of the footage for their investigation.


"Businesses are saying, 'I have a camera at this location, and it may or may not be of use to you. It's a registration to say, 'feel free to call me,'" Sgt. Joseph Green told ABCNews.com






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