Search Publications
Rosetta mission: Cometary curiosities
Chiao, May
Hunting for Long-lived Protoplanetary Disks Observed with AKARI/FIS
Liu, Yao; Liu, Qiong
Twenty-one YSO (Young Stellar Object) candidates nearby the solar system have been identified through cross-correlating Hipparcos (High Precision Parallax Collecting Satellite) catalog with the AKARI/FIS YSO catalog, and the reliability is over 90%. The central objects cover the spectral types from B to M. The Hipparcos's accurate measurements of …
X-ray spectral variability of low ionization nuclear emission line regions (LINERs)
González-Martín, O.; Márquez, I.; Masegosa, J. +1 more
Although variability is a general property of AGN, and in LINERs variations in timescales of months/years have been found for some objects, it is not clear how these changes occur. The main purpose of this work is to investigate the X-ray variability in LINERs, including the main driver of such variations. We use the 18 LINERs in the Palomar sampl…
Hunting for Long-lived Protoplanetary Disks Observed with AKARI/FIS
Liu, Y.; Liu, Q.
Twenty-one YSOs (Young Stellar Objects) in the solar neighbor have been identified through cross-correlating Hipparcos catalog with AKARI/FIS YSO catalog. The reliability of the match is over 90%. The central objects cover spectral types from B to M. The Hipparcos parallaxes enable us to place the objects in the H-R diagram, which can be used to d…
Some results from the exploration of the solar atmosphere with high-resolution x-ray-EUV spectroscopy at the Naval Research Laboratory
Doschek, G. A.
Hyper-Spectral Image Analysis With Partially Latent Regression and Spatial Markov Dependencies
Deleforge, Antoine; Forbes, Florence; Ba, Sileye +1 more
Hyper-spectral data can be analyzed to recover physical properties at large planetary scales. This involves resolving inverse problems which can be addressed within machine learning, with the advantage that, once a relationship between physical parameters and spectra has been established in a data-driven fashion, the learned relationship can be us…
Modeling of different scenarios of thin current sheet equilibria in the Earth's magnetotail
Malova, H. V.; Popov, V. Yu.; Zelenyi, L. M. +1 more
The Earth's magnetosphere is an open dynamic system permanently interacting with the solar wind, i.e., the plasma flow from the Sun. Some plasma processes in the magnetosphere are of spontaneous explosive character, while others develop rather slowly as compared to the characteristic times of plasma particle motion in it. The large-scale current s…
Brief Communication: The double layer in the separatrix region during magnetic reconnection
Guo, J.; Yu, B.
With two-dimensional (2-D) particle-in-cell (PIC) simulations we investigate the evolution of the double layer (DL) driven by magnetic reconnection. Our results show that an electron beam can be generated in the separatrix region as magnetic reconnection proceeds. This electron beam could trigger the ion-acoustic instability; as a result, a DL acc…
Lunar absolute reflectance as observed by Chang'E-1 Imaging Interferometer
Li, Bo; Zhang, Jiang; Ling, ZongCheng +3 more
Lunar absolute reflectance, which describes the fraction of solar radiation reflected by the Moon, is fundamental for the Chang'E-1 Imaging Interferometer (IIM) to map lunar mineralogical and elemental distributions. Recent observations made by the Spectral Irradiance Monitor (SIM) onboard the Solar Radiation and Climate Experiment (SORCE) spacecr…
Rosetta's comet is rich in deuterium
Wilson, R. Mark