Joint Observation of the Galactic Center with MAGIC and CTA-LST-1

MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes (IACTs), designed to detect very-high-energy gamma rays, and is operating in stereoscopic mode since 2009 at the Observatorio del Roque de Los Muchachos in La Palma, Spain. In 2018, the prototype IACT of the Large-Sized Telescope (LST-1) for the Cherenkov Telescope Array, a next-generation ground-based gamma-ray observatory, was inaugurated at the same site, at a distance of approximately 100 meters from the MAGIC telescopes. Using joint observations between MAGIC and LST-1, we developed a dedicated analysis pipeline and established the threefold telescope system via software, achieving the highest sensitivity in the northern hemisphere. Based on this enhanced performance, MAGIC and LST-1 have been jointly and regularly observing the Galactic Center, a region of paramount importance and complexity for IACTs. In particular, the gamma-ray emission from the dynamical center of the Milky Way is under debate. Although previous measurements suggested that a supermassive black hole Sagittarius A* plays a primary role, its radiation mechanism remains unclear, mainly due to limited angular resolution and sensitivity. The enhanced sensitivity in our novel approach is thus expected to provide new insights into the question. We here present the current status of the data analysis for the Galactic Center joint MAGIC and LST-1 observations

An analysis of galactic plane enhancement for Gamma-Ray experiment of BATSE 3B catalogue with Durham formulation

[Abstract] I shall report an analysis of data of an equipment of CGRO (Compton Gamma Ray Observatory) sattelite of BATSE gamma-ray experiment which is openned in the Internet data base. The analysing result is consistent with thier results within the error

A Review on Magnetic Field of the Galaxy and High Energy Cosmic Rays

[Abstract] Cosmic rays with relativeistic high energy, inner or outer the Galaxy of their origins, which are observed on the earth have to travel through magnetic field of the Galaxy. Direction of charged particles should be affected by magnetic field while they pass through the field. How magnitude is the magnetic field? How the cosmic high energy particles propagate in the Galactic magnetic Field? I report a review of present knowledge on the Galactic magnetic field and propagation of energetic cosmic particles in the field briefly

A STUDY OF THE "LEADING" PARTICLE EFFECT IN HADRON PHYSICS OVER A WIDE ENERGY RANGE

[Abstract] A study of the "leading" particle effect is reported for the productions of Kaon, Lambda, anti-Lambda and Sigma in the interactions of proton-proton at 405 GeV/c[5,6,14], proton-antiproton at 3 and 4 GeV/c[18-20]. And we compare theother experimental data which includes strangeness or non-strangeness mesons andbaryons over a wide energy range, center of energy of 25 to 62 GeV. Even the in-teractions at low energy, it is shown that the "leading" particle effect is presented clearly for baryon productions and also observed for meson productions in case of the particles contain initial quarks