Eta Carinae may reach Earth

Eta Carinae may reach Earth

Eta Carinae may reach Earth

The most luminous and massive stellar system within 10,000 light-years from Earth, Eta Carinae is accelerating cosmic ray particles at high speeds and perhaps some of these rays are reaching Earth. "Similar processes must occur in other extreme environments".

"We've known for some time that the region around Eta Carinae is the source of energetic emission in high-energy X-rays and gamma rays", said Fiona Harrison, the principal investigator of NuSTAR and a professor of astronomy at Caltech. But, as the particles carry electric charge, the magnetic field of the solar system and Earth deflects their path, leaving no sign to detect where they came from.

The massive stars of Eta Carinae orbit each other once every 5.5 years, when they come "unusually close" to one another, at a distance of about 140 million miles (225 million kilometers) - or roughly the same distance between Mars and the sun.

"Both of Eta Carinae's stars drive powerful outflows called stellar winds", Michael Corcoran, also from Goddard, said.

"Where these winds clash changes during the orbital cycle, which produces a periodic signal in low-energy X-rays we have been tracking for more than two decades", Corcoran said.

Kenji Hamaguchi, an astrophysicist at Goddard and the lead author of a new study, says a review of NuSTAR data and archived observations by the European Space Agency's XMM=Newton space telescope indicates Eta Carina is a likely source.

However, astronomers could not confirm the connection as Fermi's vision is not as sharp as X-ray telescopes.

Lingard and England ready to continue family affair in Russian Federation
Nobody qualifying for the World Cup last 16 gets lucky. England play Colombia on Tuesday at 7pm. Sweden will play Switzerland in St. Petersburg earlier the same day.

An artist's impression of the NuSTAR space telescope.

The team behind the new study examined both new and archival data acquired by NuSTAR between March 2014 and June 2016.

Low-energy, or soft, X-rays originate in gas at the interface of colliding stellar winds where temperatures can exceed 40 million degrees Celsius (79 million degrees Fahrenheit).

To solve the problem, the agency chose to employ its NuSTAR space telescope that can make highly-accurate X-ray detections. Visible light features energy ranging from 2 to 3 electron Volts.

To be specific, both the high powered X-rays detected by NuStar and the gamma rays detected by Fermi seemed to be emanating from a binary orbital period.

Focused NuSTAR observations show that the colliding winds of the massive binary eta Carinae accelerate particles to very high energies, adding to the cosmic ray flux of the Galaxy. Since its launch in 2012, it has been detecting X-rays above 30,000 electron volts. Before this, the origin of some unique X-rays and gamma rays detected on Earth was a mystery to experts. The best explanation for hard X-rays is electrons accelerated in violent shock waves along the boundary of the colliding stellar winds, suggesting that these stellar winds are more dramatic than expected. The system was first cataloged by the English astronomer Edmond Halley in 1677, as a star of fourth magnitude.

According to the latest observations, Eta Carinae stars emits cosmic radiations that can escape their system, while some of these X-ray and gamma-ray emissions can even reach Earth. "But until NuSTAR was able to pinpoint the radiation... the origin was mysterious".

Recommended News

  • WATCH as Three Lions fans across the country celebrate England WIN

    England captain Harry Kane did not add to his six goals at the tournament but is relishing a semi-final in Russia's capital. But the performances of Gareth Southgate's young lineup in Russian Federation are being celebrated wildly back home.
    Latest team news ahead of quarter-final today

    Latest team news ahead of quarter-final today

    Shorn of star names since Zlatan Ibrahimovic's retirement from global football, Sweden have thrived off a collective team spirit. We don't see how England will score through fluid open play, and Sweden won't light up the scoreboard either.
    England head into semi-finals after win over Sweden

    England head into semi-finals after win over Sweden

    I think England will prevail here, against a side that might struggle to break well against Southgate's three-man defence. The major threat is clearly Emil Forsberg , the left-sided midfielder who has impressed for RB Leipzig.
  • Former NBA, UCLA Player Found Dead After Standoff With Police

    Former NBA, UCLA Player Found Dead After Standoff With Police

    When officers arrived at the home, near Riverside Drive and Tyrone Avenue, the suspect opened fire on them, authorities said . Honeycutt was 27 at the time of his death; no officers were reported injured during the exchange of gunfire.
    Brazil exit means only Europeans left standing at World Cup

    Brazil exit means only Europeans left standing at World Cup

    I know that as long as I continue working hard, things will get rolling. We've trained for that yesterday so we are really well-prepared".
    Texas teen attacked for wearing ‘Make America Great Again’ hat

    Texas teen attacked for wearing ‘Make America Great Again’ hat

    The video and subsequent postings about the incident sparked political back-and-forth tweets among Trump supporters and critics. Jimenez was seen by a magistrate and booked into the Bexar County Jail, where his bail was set at $5000.
  • Armed, barricaded suspect may be former NBA, UCLA basketball star

    Honeycutt played at UCLA in the 2009-10 and 2010-11 seasons, earning a spot on the Pac-10 all-freshman team in his first year. The shooting occurred in the area of Riverside Drive and Tyrone Avenue around 5 p.m., officials said.
    Talks with USA  on dismantling nuclear programme were regrettable, says North Korea

    Talks with USA on dismantling nuclear programme were regrettable, says North Korea

    Ahead of the summit, Pompeo said Trump would reject anything short of "complete, verifiable and irreversible denuclearization". She said the dinner lasted an hour and 45 minutes and at times the two were "cracking jokes" and "exchanging pleasantries".
    Toyota unveils new Supra to run in Xfinity Series in 2019

    Toyota unveils new Supra to run in Xfinity Series in 2019

    In 2016, Daniel Suarez took the NASCAR Xfinity Drivers' Championship in his No. 19 Toyota Camry for Joe Gibbs Racing . Toyota has announced that the new Supra sports vehicle will be among the cars that race the NASCAR Xfinity Series.
  • Captain Kane sends touching message to five-year-old cancer patient Ben

    Captain Kane sends touching message to five-year-old cancer patient Ben

    Former England worldwide Rio Ferdinand also took to Twitter to express his emotions on the video. Interested in World Cup? He said: "Hi Ben, I've seen your video and you are an inspiration".
    Rafael Nadal reveals his problem with Brazilian umpire after Wimbledon win

    Rafael Nadal reveals his problem with Brazilian umpire after Wimbledon win

    Three-time champion Novak Djokovic will be in slightly unfamiliar surroundings as he tries to reach the third round at Wimbledon. Cilic, meanwhile blew a two-set lead in his 3-6, 1-6, 6-4, 7-6 (7/3), 7-5 loss to Argentina's Guido Pella, ranked No.82.
    'Love Island': Four Contestants Dumped As Wes Recouples With Megan

    'Love Island': Four Contestants Dumped As Wes Recouples With Megan

    If that isn't enough, Love Island has given us a sneak peak of tonight's drama and the villa is on meltdown. Following a bit of "grafting" on his part, and with the shock dumping, Wes and Megan are now a couple.

We are pleased to provide this opportunity to share information, experiences and observations about what's in the news.
Some of the comments may be reprinted elsewhere in the site or in the newspaper.
Thank you for taking the time to offer your thoughts.