We report on a pilot study on identifying metal-poor stars pre-enriched by Pair-Instability Supernovae(PISNe).Very massive,first generation(Population Ⅲ) stars
The hard X-ray modulation telescope (HXMT) mission is mainly devoted to performing an all-sky survey at 1 250 keV with both high sensitivity and high spatial re
Specific challenges arise in the task of real-time automatic data reduction of optical space debris observations. Here we present an automatic technique that op
X-ray loud M dwarfs are a major source of by-products (contamination) in the X-ray band of the multiwavelength quasar survey. As a by-product, the low dispersio
The frequency distribution for several characteristics of a solar flare obeys a power law only above a certain threshold,below which there is an apparent loss o