Zikinshan Observatory discovering new ingredients of the cosmic line of the Milky Way


Zikinshan Observatory discovering new ingredients of the cosmic line of the Milky Way

The reporter learned from the Chinese Academy of Sciences Zikinshan Observatory, recently, Yuan Qinyuan, Yuan Qiang, Fan Yizhong, three researchers found the cosmic ingredients of the central (white heart) of the Milky Way, the magnetic shielding effect of the cosmic rays, and the results were published in "Natural Newsletter" "On, there is an international astronomical profession concern.

For a long time, Yinxin has always been one of the most concerned of astronomers.

According to reports, Yinxin contains oversized quality black holes, forests of forests, and a large number of dark objects that are expected, which makes people ‘s interest in the interest in the interests. The cosmic line is a high energy belt particles generated in extreme celestial environments. It is an important messenger to study numerous physics and astronomical issues such as particle acceleration, interstellar media, and interstellar magnetic fields.

The cosmic rays and interstellar collisions can produce gamma rays, so the origins of the origin and propagation of the cosmic rays can be studied by gamma rays. In 2016, (high-energy stereoscopic ", a Namibia atmospheric Cuto Telescope) found that there is a sustained cosmic acceleration of the heart by observing the dispersion gamma rays near the heart, and the sustained cosmic acceleration of the heart is found, and the cosmic line can accelerate To PEV energy, the accelerating source is likely to be related to the super-quality black hole of the heart.

Zikinshan Observatory Research Team utilizes Fermi satellite gamma ray data, and carefully studied the cosmic line distribution of region near the bank. At lower energy segment certification, the low energy of the PEV acceleration source, supports the presence of a source of the silver heart cosmic line, and also shows that the cosmic line source can effectively accelerate high energy particles across the plurality of energy segments. In addition, the research team also found that the cosmic energy density of the central molecular cloud area near Yinxin is lower than the energy density of the universe "sea" outside the molecular cloud.

This means that the central molecular cloud plays a barrier role that effectively prevents high energy particles in the cosmic "sea" from being pulled into the region.

Its physical reasons may be because the magnetic field intensity in the molecular cloud is higher, and the cosmic line particles are shielded outside the molecular cloud.

Similar magnetic shielding effects in our solar system have already been observed, that is, the solar modulation effect of the cosmic rays. Our Galaxy is also similar to such a barrier, and the low energy cosmic line outside the river "refuses to do."

(Cai Xiwen).