When a star is about to die, it explodes in a supernova, leaving behind a diffuse cloud of gas and dust around its own small, compact core, often in the form of a neutron star. The pulsar is kind of neutron star which rotates rapidly and produced a extreme strong magnetic field. Some pulsars also generate a strong wind of charged particles, resulting in a type of nebula called a “pulsar wind nebula.”
From these Pulsar wind nebula, we might possible able to detect the source of high energy cosmic rays and nearly massless sub atomic particles like neutrinos.
We know that these pulsar wind nebula emits gamma rays at energies on the scale of a trillion electronvolts (known as a teraelectronvolt, TeV); From the observation they are the most abundant TeV gamma-ray emitters in the Milky Way galaxy, and it is also predict that these are source of cosmic rays and neutrino, but currently we are not sure about this.
Cosmic rays are the high energy subatomic particles that are detected from outer space, when cosmic rays interact with the atmosphere molecules it produces a gamma ray and a neutrinos. But, on the other gamma rays can also be produced without a cosmic rays. seeing both neutrino and a gamma rays we will conclude that it might from cosmic ray accelerator.
An analysis of 35 pulsar wind nebulae with observed TeV gamma-ray emission, the research put forward the four different hypothesis to evaluate significance of possible neutrino corelation, They assumed that the possible neutrino emission is proportional to the high-energy gamma-ray flux associated with the sources. And all pulsar have emitting neutrino also. This hypothesis suggest that the younger pulsar are more energetic and they are fastest spinning.
“The presence of hadrons in pulsar wind nebulae has significant impact on our understanding of the particle acceleration in these major gamma-ray emitters in the Milky Way,” says Ali Kheirandish, a postdoc at Pennsylvania State University and one of the leads on this analysis. “Even a small contribution of ions can help resolve tensions in the modeling of the high-energy emission from pulsar winds, and the obtained upper limits on the hadronic contributions in this analysis aim at overcoming this obstacle.”
To know more about this check out this :
The IceCube Collaboration: M. G. Aartsen et al. Submitted to The Astrophysical Journal
https://icecube.wisc.edu/news/view/729
To know more about ghost particles check out our blog post
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| image credit :NASA's Chandra X-ray Observatory |
From these Pulsar wind nebula, we might possible able to detect the source of high energy cosmic rays and nearly massless sub atomic particles like neutrinos.
We know that these pulsar wind nebula emits gamma rays at energies on the scale of a trillion electronvolts (known as a teraelectronvolt, TeV); From the observation they are the most abundant TeV gamma-ray emitters in the Milky Way galaxy, and it is also predict that these are source of cosmic rays and neutrino, but currently we are not sure about this.
Cosmic rays are the high energy subatomic particles that are detected from outer space, when cosmic rays interact with the atmosphere molecules it produces a gamma ray and a neutrinos. But, on the other gamma rays can also be produced without a cosmic rays. seeing both neutrino and a gamma rays we will conclude that it might from cosmic ray accelerator.
An analysis of 35 pulsar wind nebulae with observed TeV gamma-ray emission, the research put forward the four different hypothesis to evaluate significance of possible neutrino corelation, They assumed that the possible neutrino emission is proportional to the high-energy gamma-ray flux associated with the sources. And all pulsar have emitting neutrino also. This hypothesis suggest that the younger pulsar are more energetic and they are fastest spinning.
“The presence of hadrons in pulsar wind nebulae has significant impact on our understanding of the particle acceleration in these major gamma-ray emitters in the Milky Way,” says Ali Kheirandish, a postdoc at Pennsylvania State University and one of the leads on this analysis. “Even a small contribution of ions can help resolve tensions in the modeling of the high-energy emission from pulsar winds, and the obtained upper limits on the hadronic contributions in this analysis aim at overcoming this obstacle.”
To know more about this check out this :
The IceCube Collaboration: M. G. Aartsen et al. Submitted to The Astrophysical Journal
https://icecube.wisc.edu/news/view/729
To know more about ghost particles check out our blog post
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