Presence of Antimatter has been found near earth

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A recent study in Science has confirmed the presence of positrons(Antimatter particles of the electron) near earth.First, it was believed to be due to the collapse of stars far away.But, it seems to be impossible as particles couldn't  have traveled as far as earth.So, now pulsars are being blamed for the antimatter particles.


To find how these positrons are present near earth HAWC Observatory is used.This observatory is used for finding the direction and energy of the incoming light in the form of high energy gamma rays.In order to learn more HAWC collaborated with Stanford researchers and they developed a software to combine the data from the Fermi gamma rays space telescope with other instruments.

Geminga pulsar illustration
How does it work??

The Fermi telescope works in 2 instruments
1.The Gamma Ray Burst monitor
2.Large Area Telescope(LAT)

Even though these instruments exist on the same telescope, bringing the data together had its own set of challenges.As the sensitivity of Large Area Telescope was often sacrificed.The situation even worsens when the collection of data is from different experiments.The collaborations have increased to study the gamma-ray outbursts.
The researchers believe that their continuous improvement of software will help in studying the rays across different wavelengths.

Only time can tell us the reason behind the presence of positrons.

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