中文
相关论文

相关论文: Estimate Sonic Mach Number in the Interstellar Med…

200 篇论文

The Galactic interstellar turbulence affects the density distribution and star formation. We introduce a new method of measuring interstellar turbulent density spectra by using the dispersion measures (DMs) of a large sample of pulsars.…

星系天体物理 · 物理学 2021-01-06 Siyao Xu , Bing Zhang

Convolutional neural networks (CNNs) are widely used in computer vision. They can be used not only for conventional digital image material to recognize patterns, but also for feature extraction from digital imagery representing spectral and…

声音 · 计算机科学 2025-09-16 Friedrich Wolf-Monheim

Synchrotron observation serves as a tool for studying magnetic fields in the interstellar medium and intracluster medium, yet its ability to unveil three-dimensional (3D) magnetic fields, meaning probing the field'splane-of-the-sky (POS)…

星系天体物理 · 物理学 2024-09-10 Yue Hu , Alex Lazarian

Convolutional neural networks are sensitive to unknown noisy condition in the test phase and so their performance degrades for the noisy data classification task including noisy speech recognition. In this research, a new convolutional…

音频与语音处理 · 电气工程与系统科学 2020-01-01 Elyas Rashno , Ahmad Akbari , Babak Nasersharif

Theoretical and observational studies on the turbulence of the interstellar medium developed fast in the past decades. The theory of supersonic magnetized turbulence, as well as the understanding of projection effects of observed…

星系天体物理 · 物理学 2015-05-18 D. Falceta-Goncalves , A. Lazarian , M. Houde

Convolutional Neural Networks (CNNs) exhibit a well-known texture bias, prioritizing local patterns over global shapes - a tendency inherent to their convolutional architecture. While this bias is beneficial for texture-rich natural images,…

计算机视觉与模式识别 · 计算机科学 2026-02-06 Takito Sawada , Akinori Iwata , Masahiro Okuda

In the Interstellar Medium (ISM), gas and dust evolve under magnetohydrodynamic (MHD) turbulence. This produces dense, non-linear structures that then seed star formation. Observationally and theoretically, turbulence is quantified by…

星系天体物理 · 物理学 2024-12-06 Victoria Williamson , James Sunseri , Zachary Slepian , Jiamin Hou , Alessandro Greco

This paper reports on 3D numerical simulations of dynamics and thermodynamics in the diffuse ISM. Our models are local, account for sheared galactic rotation, magnetic fields, and realistic cooling, and resolve scales ~1-200 pc. This…

天体物理学 · 物理学 2009-11-11 Robert A. Piontek , Eve C. Ostriker

Dust polarization is a powerful tool for studying the magnetic field properties in the interstellar medium (ISM). However, it does not provide a direct measurement of its strength. Different methods havebeen developed which employ both…

星系天体物理 · 物理学 2021-04-07 Raphael Skalidis , Konstantinos Tassis

Sub-mm observations of protoplanetary disks now approach the acuity needed to measure the turbulent broadening of molecular lines. These measurements constrain disk angular momentum transport, and furnish evidence of the turbulent…

太阳与恒星天体物理 · 物理学 2015-05-28 Jacob B. Simon , Philip J. Armitage , Kris Beckwith

Magnetohydrodynamic (MHD) turbulence plays a central role in many astrophysical processes in the interstellar medium (ISM), including star formation and cosmic-ray transport and acceleration. MHD turbulence can be decomposed into three…

星系天体物理 · 物理学 2026-01-13 Jiyao Zhang , Yue Hu

In this paper, we propose a stacked convolutional and recurrent neural network (CRNN) with a 3D convolutional neural network (CNN) in the first layer for the multichannel sound event detection (SED) task. The 3D CNN enables the network to…

声音 · 计算机科学 2018-01-30 Sharath Adavanne , Archontis Politis , Tuomas Virtanen

In this work, we explore the link between star formation, turbulence and the thermal state of the multi-phase ISM. We analyse a suite of stratified box simulations modelling a realistic ISM that aims to probe environments similar to those…

Context. It is almost banal to say that the interstellar medium (ISM) is structurally and thermodynamically complex. But the variety of the governing processes, including stellar feedback, renders the investigation challenging. High…

星系天体物理 · 物理学 2023-08-30 Marco Monaci , Loris Magnani , Steven N. Shore , Henrik Olofsson , Mackenzie R. Joy

In the framework of the focusing Nonlinear Schrodinger (NLS) equation we study numerically the nonlinear stage of the modulation instability (MI) of the condensate. As expected, the development of the MI leads to formation of "integrable…

可精确求解与可积系统 · 物理学 2015-09-15 D. S. Agafontsev , V. E. Zakharov

Convolutional Neural Networks (CNN) have been pivotal to the success of many state-of-the-art classification problems, in a wide variety of domains (for e.g. vision, speech, graphs and medical imaging). A commonality within those domains is…

机器学习 · 计算机科学 2019-12-02 Rohan Ghosh , Anupam K. Gupta , Mehul Motani

Using cosmological dark matter only simulations of a $(1.6$ Gpc$/h)^3$ volume from the Legacy simulation project, we calculate Cosmic Mach Numbers (CMN) and perform a theoretical investigation of their relation with halo properties and…

宇宙学与河外天体物理 · 物理学 2022-03-09 Romain Meriot , Sadegh Khochfar , Jose Onorbe , Britton Smith

Speech, Music and Noise classification/segmentation is an important preprocessing step for audio processing/indexing. To this end, we propose a novel 1D Convolutional Neural Network (CNN) - SwishNet. It is a fast and lightweight…

机器学习 · 计算机科学 2018-12-04 Md. Shamim Hussain , Mohammad Ariful Haque

The solution of nonlinear electromagnetic (EM) inverse scattering problems is typically hindered by several challenges such as ill-posedness, strong nonlinearity, and high computational costs. Recently, deep learning has been demonstrated…

计算物理 · 物理学 2020-01-08 Lianlin Li , Long Gang Wang , Fernando L. Teixeira

While convolutional neural networks (CNNs) have found wide adoption as state-of-the-art models for image-related tasks, their predictions are often highly sensitive to small input perturbations, which the human vision is robust against.…

计算机视觉与模式识别 · 计算机科学 2021-10-18 Stefan Sietzen , Mathias Lechner , Judy Borowski , Ramin Hasani , Manuela Waldner