The merger of the galaxy cluster provides the laboratory to accelerate electrons


Credit: SRON Netherlands Institute of Space Research

The blending of galaxies is studied by natural laboratories of astronomers to study the cosmic phenomenon. Argon Holding The SRON Netherlands Institute of Space Research uses the merging Abell 3376 study of how electrons rush through the intracluster medium at relativistic speeds. Conclusions indicate the acceleration mechanism called Diffusive Shock Acceleration. The study was published Astronomy and astrophysics.


Currently, the Milky Way is rocketed by Andromeda at a speed of 100 km / h. Will the sun break one trillion Andromeda stars, taking the earth down to her? Fortunately, no. The distances between the stars in the galaxy are so large that if they were the size of the ping-pong balls, they would be about 1,000 kilometers. Galaxies do not collide, they merge. The same galaxies are clusters. Astronomers in the space laboratory provide the study of all kinds of phenomena, such as accelerated electrons through galactic gas. Igone Urdampilleta from SRON Netherlands Institute of Space Research uses two merger clusters that share the name Abell 3376, to learn how electrons accelerate up to relativistic energies.

During the merger, the hot and diffuse gases between the galaxies are faced with the heat and becomes exciting. Astronomers call this intraculatory medium (ICM), which is very airy, containing only one particle per liter. "Collision" causes shock fronts, propaganda towards the cassette center. Because ICM will become hot, Udrampilleta has managed to protect it from X-ray using the XIS instrument of Japanese Suzaku space telescope.

Urdampilleta and his colleagues compared the X-ray observations to the shock front of the outskirts of Abell 3376 with radio measurements in the same region. On the periphery, shock fronts, as a rule, are associated with radio emissions, due to the acceleration of diffuse shock caused by direct acceleration of electrons or overloading the electrons of pre-existing space rays. The researchers concluded that at least 3376 Abell's Western radio, the electronic acceleration mechanism seems to be in line with the acceleration of diffuse shock.


Learn further:
Astronomers will study the merger of the galaxy 3276 Abell and its radio clarity

Მet Information:
I. Undeffild, H. Akamasu, Ph. Meren, J. S Castra, J. de de Pass, T. Ohhi, i. Yasik and H. Kawahara, "Study Abel 3376's X-ray of Dual Radio Relief". Astronomy and astrophysics, www.aanda.org/articles/aa/abs/ … 6-17 / aa32496-17.html

Journal Reference:
Astronomy and astrophysics

Provided by:
SRON Netherlands Institute of Space Research