Vishnu Varma,Bernhard Müller
Vishnu Varma
We present a first 3D magnetohydrodynamic (MHD) simulation of convective oxygen and neon shell burning in a non-rotating [Formula: see text] star shortly before core collapse to study the generation of magnetic fields in supernova progenito...
Larissa Markwardt,D W Gerdes,R Malhotra et al.
Larissa Markwardt et al.
Most of the major planets in the Solar System support populations of co-orbiting bodies, known as Trojans, at their L4 and L5 Lagrange points. In contrast, Earth has only one known co-orbiting companion. This paper presents the results from...
Magnetic field amplification in accretion discs around the first stars: implications for the primordial IMF [0.03%]
第一代恒星周围吸积盘中的磁场放大及其对原初初始质量函数的影响
Piyush Sharda,Christoph Federrath,Mark R Krumholz et al.
Piyush Sharda et al.
Magnetic fields play an important role in the dynamics of present-day molecular clouds. Recent work has shown that magnetic fields are equally important for primordial clouds, which form the first stars in the Universe. While the primordial...
The relationship between photometric and spectroscopic oscillation amplitudes from 3D stellar atmosphere simulations [0.03%]
基于三维stellar大气模拟的光度学和分光仪振幅之间的关系
Yixiao Zhou,Thomas Nordlander,Luca Casagrande et al.
Yixiao Zhou et al.
We establish a quantitative relationship between photometric and spectroscopic detections of solar-like oscillations using ab initio, 3D, hydrodynamical numerical simulations of stellar atmospheres. We present a theoretical derivation as a ...
Cloud-cloud collision as drivers of the chemical complexity in Galactic Centre molecular clouds [0.03%]
银河中心分子云中化学复杂性产生的驱动因素：云云碰撞的影响
S Zeng,Q Zhang,I Jiménez-Serra et al.
S Zeng et al.
G+0.693-0.03 is a quiescent molecular cloud located within the Sagittarius B2 (Sgr B2) star-forming complex. Recent spectral surveys have shown that it represents one of the most prolific repositories of complex organic species in the Galax...
Potential softening and eccentricity dynamics in razor-thin, nearly-Keplerian discs [0.03%]
薄的类开普勒盘中的潜在软化与偏心率动力学
Antranik A Sefilian,Roman R Rafikov
Antranik A Sefilian
In many astrophysical problems involving discs (gaseous or particulate) orbiting a dominant central mass, gravitational potential of the disc plays an important dynamical role. Its impact on the motion of external objects, as well as on the...
J Quirola-Vásquez,F E Bauer,V V Dwarkadas et al.
J Quirola-Vásquez et al.
We present X-ray spectra spanning 18 yr of evolution for SN 1996cr, one of the five nearest SNe detected in the modern era. Chandra HETG exposures in 2000, 2004, and 2009 allow us to resolve spectrally the velocity profiles of Ne, Mg, Si, S...
Alexandre Marcowith,Vikram V Dwarkadas,Matthieu Renaud et al.
Alexandre Marcowith et al.
Core-collapse supernovae produce fast shocks which pervade the dense circumstellar medium (CSM) of the stellar progenitor. Cosmic rays (CRs) if accelerated at these shocks can induce the growth of electromagnetic fluctuations in the foresho...
V V Dwarkadas,C Romero-Cañizales,R Reddy et al.
V V Dwarkadas et al.
SN 2005kd is among the most luminous supernovae (SNe) to be discovered at X-ray wavelengths. We have re-analysed all good angular resolution (better than 20 arcsec full width at half-maximum point spread function) archival X-ray data for SN...
Rachel A Smullen,Kathryn Volk
Rachel A Smullen
In the outer solar system, the Kuiper Belt contains dynamical sub-populations sculpted by a combination of planet formation and migration and gravitational perturbations from the present-day giant planet configuration. The subdivision of ob...