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Major Scientific Goals of LHAASO

The central scientific goals of LHAASO project are to explore for the origin of high energy cosmic rays, to research into the evolution of the universe and high energy celestial bodies, and to study the dark matter. In specific targets, we will:

  1. Carry out the all-sky gamma ray sources survey, so as to find considerable new gamma ray sources, especially the extragalactic ones (about 1000 in number); accumulate the statistical samples of various sources to uncover the high energy radiation mechanism, including the strong time-varying mechanism; study the evolution law for Active Galactic Nuclei, centering on super-massive black holes; and capture the gamma ray burst events of the largest scale in the universe to explore for their burst mechanism.
  2. Achieve the precise measurement of high-energy gamma ray source spectra at wide ranges (high-energy ranges in particular); probe into the characteristics of high-energy radiation source particles; and find out evidences for baryon accelerator to exist within the galaxy, thereby the origin of cosmic rays.
  3. Accurately measure the energy spectra and components of cosmic rays; strive to develop multi-parameter measurement on air shower; and improve the ability to identify original cosmic ray particles. (We have accurately located mono-component "knee" for the very first time, which cleaned up the chaos of knee region measurement lasting for decades.)
  4. Bridge the spatial direct measurement of cosmic rays and the large facilities of ground air shower measurement, demarcate ground detector through direct measurement, and determine energy-index for ground observation, so that the constant and consistent measurement of cosmic ray energy will be realized.
  5. Push forward the frontier of new physics research: with intra-galactic cosmic ray accelerator, people can explore for new particle physics issues in new energy-index surpassing LHC energy, for instance, the energy-index of 100 TeV or more (above); and search for dark matter, especially for the specific mechanism by which its cluster structure generates gamma radiation. We could also employ the high-energy components of gamma ray burst to probe into problems related to photon propagation characteristics, like quantum gravity effect, or Lorentz symmetry breaking effect.
  6. Carry out interdisciplinary studies among atmospheric science, astronomy, meteorology, space, etc. extensively.

.. Comparison of Sensitivity between LHAASO and Other................Cosmic Ray Spectrum  ...............Experiments and Projects   123.JPG

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JPEGJPG 123.JPG r1 manage 54.2 K 2011-07-08 - 08:59 BaiYunXiang Sensitivity Spectrum
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Topic revision: r5 - 2011-07-25 - SunXitong
 
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