Nasa bbc news today cosmic rays 20188/22/2023 ![]() “Although the warning contains scientific terms, they are used in a manner that lacks an understanding of the scientific principles,” Supalerk added in the interview. “However this doesn’t mean the rays will affect our bodies in the same way,” he told AFP Fact Check. Supalerk Karuehanon, head of the Astronomical Academic Services Division of the National Astronomical Research Institute of Thailand as of 2021, said these rays can affect electronic devices. The US National Oceanic and Atmospheric Administration said cosmic rays “pose little threat to humans and systems on the ground.” About half of this comes from artificial sources such as X-ray, mammography and CT scans, while the other half we get from natural sources, of which about 10 percent comes from cosmic radiation,” it added. “On average, people are exposed to around 3.5 millisieverts of radiation per year. “Sometimes, cosmic radiation does reach us, but without creating any harm, just like other low levels of radiation we are regularly exposed to,” the IAEA said. However, there are still some that reach the ground and these can be seen through auroral lights usually spotted near the north and south pole. ![]() These come from either supernova (galactic cosmic radiation) or the sun (solar cosmic radiation), according to the International Atomic Energy Agency (IAEA).Įxperts said that the earth is shielded by a magnetic field that deflects these cosmic rays. Thus, by studying the cosmic ray particles, their abundances at knee energies, and their spectra, we can learn about what drives these stars to produce the observed cosmic rays.A post shared by Kuya Kim rays are radiations from space described as extremely high-energy subatomic particles. This can also explain the Ultra High Energy Cosmic Ray (UHECR) data in the Northern sky. The tell-tale observational sign is the conical cleaning sweep of the relativistic jet during the merger, observed as an open cone with very low radio emission. In Section 5 we interpret the compact radio source 41.9 + 58 in the starburst galaxy M82 as a recent binary black hole merger, with an accompanying gamma ray burst. ![]() Most injection happens at the largest radii before slowing down due to interaction with the environment. This interpretation implies the high temperature as observed in the winds of blue super-giant stars it also requires that cosmic ray injection happens in the shock travelling through such a wind. We can interpret the abundance data using the relation of the total number of ions enhanced by Q 0 2 A +2/3, where Q 0 is the initial degree of ionization, and A is the mass number. In Section 4 we test this paradigm with a theory of injection based on a combined effect of first and second ionization potential this reproduces the ratio of cosmic ray source abundances to source material abundances. ![]() Cosmic ray electrons of the polar cap component interact with the surrounding photon field to produce positrons by triplet pair production, and in this manner may explain the higher energy positron AMS data. In Section 3 we use the Alpha Magnetic Spectrometer (AMS) data to differentiate these two cosmic ray spectral components these two cosmic ray components excite magnetic irregularity spectra in the plasma, and the ensuing secondary spectra can explain anti-protons, lower energy positrons, and other secondary particles. After an introduction (Section 1) we introduce the basic concept (Section 2): Cosmic rays from exploding massive stars with winds always show two cosmic ray components at the same time: (i) the weaker polar cap component only produced by Diffusive Shock Acceleration, showing a relatively flat spectrum, and cut-off at the knee, and (ii) the stronger 4 π component, which is produced by a combination of Stochastic Shock Drift Acceleration and Diffusive Shock Acceleration, with a down-turn to a steeper power-law spectrum at the knee, and a final cut-off at the ankle. The radio interferometric data demonstrate that all of these stars have powerful magnetic winds. When two such black holes find themselves in a tight binary system they finally merge in a gigantic emission of gravitational waves, events that have now been detected. Massive stars above about 25M ⊙, depending on their heavy element abundance, commonly produce stellar black holes in their supernova explosions. Massive stars from slightly above about 10M ⊙ explode as supernovae via a mechanism which we do not know yet: two not mutually exclusive main ideas are an explosion driven by neutrinos, or the magneto-rotational mechanism, in which the magnetic field acts like a conveyor-belt to transport energy outwards for an explosion. Most cosmic ray particles observed derive from the explosions of massive stars.
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