中文
相关论文

相关论文: CMR exploration I -- filament structure with synth…

200 篇论文

We used CO (2-1) and CO (1-0) data cubes to identify molecular clouds and study their kinematics and dynamics in three nearby galaxies and the inner Milky Way. When observed at similar spatial and velocity resolutions, molecular clouds in…

星系天体物理 · 物理学 2025-11-03 J. W. Zhou , Sami Dib

We present magnetohydrodynamic simulations aimed at studying the effect of the magnetic suppression of turbulence (generated through various instabilities during the formation of molecular clouds by converging) on the subsequent star…

We report results of molecular line observations carried out toward a massive dense core in the Cyg OB 7 molecular cloud. The core has an extraordinarily large mass ($\sim1.1 \times 10^4$ $M_\odot$) and size ($\sim2 \times 5$ pc$^2$), but…

Magnetic reconnection in the partially ionized solar chromosphere is studied in 2.5-dimensional magnetohydrodynamic simulations including radiative cooling and ambipolar diffusion. A Harris current sheet with and without a guide field is…

太阳与恒星天体物理 · 物理学 2015-09-24 Lei Ni , Bernhard Kliem , Jun Lin , Ning Wu

Magnetic reconnection, breaking and reorganization of magnetic field topology, is a fundamental process for rapid release of magnetic energy into plasma particles that occurs pervasively throughout the universe. In most natural…

We observe the magnetic field morphology towards a nearby star-forming filamentary cloud, G202.3+2.5, by the JCMT/POL-2 850 {\mu}m thermal dust polarization observation with an angular resolution of 14.4" (~0.053 pc). The average magnetic…

Infrared Dark Clouds (IRDCs) host the initial conditions under which massive stars and stellar clusters form. We have obtained high sensitivity and high spectral resolution observations with the IRAM 30m antenna, which allowed us to perform…

太阳与恒星天体物理 · 物理学 2012-10-26 Jonathan D. Henshaw , Paola Caselli , Francesco Fontani , Izaskun Jimenez-Serra , Jonathan C. Tan , Audra K. Hernandez

Purpose of this work is study evolution of magnetized rotating filamentary molecular cloud's. We will consider cylindrical symmetric filamentary molecular clouds at the early stage of evolution. For the first time we consider rotation of…

星系天体物理 · 物理学 2017-03-22 P. Aghili , K. Kokabi

Magnetic reconnection modulated by non-local disturbances in the solar atmosphere has been investigated theoretically, but rarely observed. In this study, employing Ha and extreme ultraviolet (EUV) images and line of sight magnetograms, we…

太阳与恒星天体物理 · 物理学 2021-03-10 Leping Li , Hardi Peter , Lakshmi Pradeep Chitta , Hongqiang Song , Kaifan Ji , Yongyuan Xiang

Magnetic reconnection, the rearrangement of magnetic field topology, is a fundamental physical process in magnetized plasma systems all over the universe1,2. Its process is difficult to be directly observed. Coronal structures, such as…

太阳与恒星天体物理 · 物理学 2016-09-21 Leping Li , Jun Zhang , Hardi Peter , Eric Priest , Huadong Chen , Lijia Guo , Feng Chen , Duncan Mackay

Magnetic reconnection in the low atmosphere, e.g. chromosphere, is investigated in various physical environments. Its implications for the origination of explosive events (small--scale jets) are discussed. A 2.5-dimensional resistive…

太阳与恒星天体物理 · 物理学 2015-05-14 J. Y. Ding , M. S. Madjarska , J. G. Doyle , Q. M. Lu

One "strong" magnetic cloud (MC) with the magnetic field magnitude reaching $\sim$ 40 nT at 1 au during 2012 June 16-17 is examined in association with a pre-existing magnetic flux rope (MFR) identified on the Sun. The MC is characterized…

太阳与恒星天体物理 · 物理学 2022-08-03 Qiang Hu , Chunming Zhu , Wen He , Jiong Qiu , Lan K. Jian , Avijeet Prasad

A Coronal Mass Ejection (CME) is an inhomogeneous structure consisting of different features which evolve differently with the propagation of the CME. Simultaneous heliospheric tracking of different observed features of a CME can improve…

太阳与恒星天体物理 · 物理学 2015-05-20 Wageesh Mishra , Nandita Srivastava

We propose a new approach to comparing simulated observations that enables us to determine the significance of the underlying physical effects. We utilize the methodology of experimental design, a subfield of statistical analysis, to…

星系天体物理 · 物理学 2015-06-18 Miayan Yeremi , Mallory Flynn , Stella Offner , Jason Loeppky , Erik Rosolowsky

We present filamentary structure analysis based on the CARMA Orion Project through which we obtained high resolution (0.01pc) and high dynamic range (2~deg in DEC) images of the Orion A molecular cloud. We show a preliminary emission map of…

星系天体物理 · 物理学 2017-12-08 Sümeyye Suri , Peter Schilke , Álvaro Sánchez-Monge

Magnetic reconnection is a fundamental mechanism in astrophysics. A common challenge in mimicking this process numerically in particular for the Sun is that the solar electrical resistivity is small compared to the diffusive effects caused…

太阳与恒星天体物理 · 物理学 2023-07-05 Øystein Håvard Færder , Daniel Nóbrega-Siverio , Mats Carlsson

Analysing the kinematics of filamentary molecular clouds is a crucial step towards understanding their role in the star formation process. Therefore, we study the kinematics of 283 filament candidates in the inner Galaxy, that were…

The orientations of filamentary molecular clouds in the Gould Belt and their local ICM (inter-cloud media) magnetic fields are studied using near-infrared dust extinction maps and optical stellar polarimetry data. These filamentary clouds…

星系天体物理 · 物理学 2015-06-17 Hua-bai Li , Min Fang , Thomas Henning , Jouni Kainulainen

Magnetic fields are ubiquitously observed in the interstellar medium (ISM) of present-day star-forming galaxies with dynamically relevant energy densities. Using three-dimensional magneto-hydrodynamic (MHD) simulations of the supernova (SN)…

We examine the linear stability of a filamentary cloud permeated by a perpendicular magnetic field. The initial magnetic field is assumed to be uniform and perpendicular to the cloud axis. The model cloud is assumed to have a Plummer-like…

星系天体物理 · 物理学 2019-09-04 Tomoyuki Hanawa , Takahiro Kudoh , Kohji Tomisaka