Ideas tagged with astrophysics

Space Debris Fingerprint Definition and Identification

The amount of space debris is increasing, and the threat to normal human space activities is also increasing. The concept of fingerprints of space debris is proposed here. It is necessary to define the fingerprints of space debris, and identify different debris characteristics according to the f...

By Yu Jiang

Shovel-ready for Gaia DR2: Find hypervelocity stars from M31/LMC

Hypervelocity stars move with extremely large Galactocentric velocities (~1000 km/s) and are found from their anomalous velocities, ages, and metallicities. These stars are thought to have interacted with the supermassive black hole at the center of the Milky Way, given that they are seen moving...

By Adrian Price-Whelan

The NASA K2 Mission has yet to observe an analog of Tabby's Star

Tabby's Star is a main sequence F-class star ([KIC 8462852](https://en.wikipedia.org/wiki/KIC_8462852)) observed by the NASA Kepler spacecraft to undergo significant aperiodic dimming activity across a four year baseline. The light curve was noted as novel amongst a pool of ~150,000 targets thro...

By Daryll LaCourse

Calculation of multi-dimensional information acquisition in space potential disintegration target

Some space debris belongs to the upper stage of the rocket, and propellant remains inside the debris, which may explode and generate more space debris. In order to identify potential disintegration targets in space, understand the remaining amount of propellant, fracture location and degree of f...

By Yu Jiang