Bernie Sanders

https://m.facebook.com/senatorsanders

Bernie Sanders for President

July 6,2015

Mainers Back Bernie at Big Rally

PORTLAND, Maine –

More than 7,500 people packed an arena here Monday night in another big show of grassroots support for Bernie Sanders.“In case you didn’t notice, this is a big turnout,” Sanders told the placard-waving crowd as they cheered his call to take on the billionaire class and rebuild the American middle class.“From Maine to California, the American people understand that establishment politics and establishment economics are not working for America,” Sanders said. “They understand that the greed of Wall Street and corporate America is destroying the great middle class of this country and people from coast to coast are saying, ‘You can’t keep getting away with it.’”In his fiery speech, Sanders pledged to address gaps in wealth and income inequality that are greater than at any time since the Great Depression. The big turnouts, he said, are sending a powerful message that Americans are tired of a system rigged to help the rich and powerful instead of working families.“It is not acceptable that a handful of billionaires is now controlling our political process and the time is long overdue for the corporate media to start talking about the real issues,” Sanders said. “People are becoming involved in this campaign because they want change – real change – and that is what this campaign is about.”Sanders was introduced by Troy Jackson, a logger from Allagash, Maine, who praised the senator’s willingness to take on “the big corporate structure.” Sanders’ proposals for improving health care, raising the minimum wage and making higher education tuition-free also were cited by the Democratic National Committee member and former Maine Senate majority leader. “What a lot of people are feeling is that there is somebody speaking to their issues,” Jackson told the Portland Press-Herald.“That’s why you’re seeing so many people come out.”He also called for closing tax loopholes that let profitable corporations stash income in the Cayman Islands and other tax havens. He said he would break up the largest financial institutions in the country that are bigger today than before they were bailed out by taxpayers after the 2008 Wall Street crash.The Portland turnout was another in a string of big crowds coming out for Sanders. A 10,000-seat arena in Madison, Wisconsin, was filled to capacity last Wednesday when more people turned out than for any presidential candidate anywhere so far this campaign. On the Friday night before the Fourth of July, more than 2,500 showed up at a convention center in Council Bluffs, Iowa, the biggest Iowa audience for any candidate to date.

V404 Cygni

This photograph was produced by European Southern Observatory (ESO). (an artist's rendition)


http://finance.yahoo.com/news/nearby-black-hole-just-emitted-220730283.html?soc_src=mediacontentstory&soc_trk=ma

A nearby black hole just erupted for the first time in 26 years and scientists are ecstatic

Business Insider
By Jessica Orwig 

Lurking 8,000 light years from Earth is a black hole 12 times more massive than our sun. It's been peacefully sleeping for 26 years.But on June 15, astronomers detected something signaling that it had woken up.Now, scientists around the world are using highly sophisticated instruments to learn as much as they can about this mysterious beast of nature before the black hole returns to its slumber, which will be soon.Black holes are very dense, massive objects in space that have an immensely powerful gravitational field that traps anything and everything that comes too close, including light. But on occasion they'll spit out material as well as suck it in.On June 15, one of NASA's satellites picked up a torrent of x-rays all coming from a single source: the black hole."Relative to the lifetime of space observatories, these black hole eruptions are quite rare," said Neil Gehrels, the principal investigator for Swift, the NASA satellite that first identified the eruption in a NASA press release. "So when we see one of them flare up, we try to throw everything we have at it, monitoring across the spectrum, from radio waves to gamma rays."

A deadly companion

This black hole is just one half of a two-body system called V404 Cygni. Its partner is a star slightly smaller than our sun, and it's been nourishing the black hole for at least 77 years. The x-rays that astronomers observed on June 15 were the heated guts from the companion star that had spiraled into the mouth of the black hole.When black holes in binary systems, like V404 Cygni, feed, they do so by gravitationally attracting a single thread of gas from the star. The black hole is 12 times more massive than its companion and therefore has a much stronger gravitational grip which slowly pulls gas from the star as the star orbits around it, like in the animation below:.As the gas gets pulled in, it orbits around the black hole, forming a disc. The closer the gas gets to the black hole, the stronger gravitational force it feels and so the faster it moves, heating up to searing-hot temperatures. When the gas reaches temperatures of more than 1.7 million degrees Fahrenheit, it emits a jet of high-energy particles, which satellites like NASA's Swift instrument then detect — albeit 8,000 years later because of the time it takes light to travel from the V404 Cygni to Earth.But there isn't always a steady stream of gas falling into the black hole, which is why it takes such long naps in between feedings.
That disc has two regions: an inner, hot region, and an outer cool region. You need a lot of gas to provide enough pressure and push to cross this barrier, which takes time to generate. Once the black hole has consumed all of the gas in the inner region, which it does in a few days, it has to wait for more. But scientists don't understand the details of how much gas is necessary or exactly how long it takes to build up. That's why this event is so exciting because it gives astronomers a chance to better understand the mechanism that's driving these eruptions. 

A once-in-a-professional-lifetime opportunity

.(European Southern Observatory on Flickr) V404 Cygni's black hole has erupted before.However, when astronomers first saw the outbursts more than 77 years ago, in 1938, they didn't have half of the instruments that are around today. The black hole erupted again in 1956, and then again in 1989. While the eruption of 1989 was studied with a handful of instruments, the outburst wasn't studied in half the detail compared to this year's event.Outbursts like this usually only last for a few weeks to months, so astronomers have culminated a total of nine instruments in space and on the ground to study the black hole in all wavelengths, from very low energy like radio waves to the most energetic like gamma rays, before time runs out.Some of the instruments they're using include the Chandra X-ray Observatory, the European Space Agency's INTEGRAL satellite, Japan's MAXI, and the 10.4-meter Gran Telescope Canarias operated by Spain in the Canary Islands."It is definitely a 'once in a professional lifetime' opportunity," said Erik Kuulkers, the INTEGRAL project scientist in the NASA press release.