中文
相关论文

相关论文: Improving the Automated Coronal Jet Identification…

200 篇论文

Early detection and diagnosis of coronary artery disease (CAD) could save lives and reduce healthcare costs. The current clinical practice is to perform CAD diagnosis through analysing medical images from computed tomography coronary…

Extreme-ultraviolet and X-ray jets occur frequently in magnetically open coronal holes on the Sun, especially at high solar latitudes. Some of these jets are observed by white-light coronagraphs as they propagate through the outer corona…

太阳与恒星天体物理 · 物理学 2017-03-15 Vadim M. Uritsky , Merrill A. Roberts , C. Richard DeVore , Judith T. Karpen

A simple, yet powerful, algorithm for computed tomography of the solar corona is presented and demonstrated using synthetic EUV data. A minimum of three perspectives are required. These may be obtained from STEREO/EUVI plus an instrument…

天体物理学 · 物理学 2008-07-15 Charles C. Kankelborg

Standard jet finding techniques used in elementary particle collisions have not been successful in the high track density of heavy-ion collisions. This paper describes a modified cone-type jet finding algorithm developed for the complex…

核实验 · 物理学 2008-11-26 S-L Blyth , M J Horner , T Awes , T Cormier , H Gray , J L Klay , S R Klein , M van Leeuwen , A Morsch , G Odyniec , A Pavlinov

We provide a large image parameter dataset extracted from the Solar Dynamics Observatory (SDO) mission's AIA instrument, for the period of January 2011 through the current date, with the cadence of six minutes, for nine wavelength channels.…

太阳与恒星天体物理 · 物理学 2019-07-31 Azim Ahmadzadeh , Dustin J. Kempton , Rafal A. Angryk

One of the challenges of collider physics is to unambiguously associate detector based objects with the corresponding elementary physics objects. A particular example is the association of calorimeter-based objects such as "jets",…

高能物理 - 唯象学 · 物理学 2013-05-30 Stephen D. Ellis , Tuhin S. Roy , Jakub Scholtz

The radioheliograph image is essential for the study of solar short term activities and long term variations, while the continuity and granularity of radioheliograph data is not so ideal, due to the short visible time of the sun and the…

太阳与恒星天体物理 · 物理学 2021-01-13 PeiJin Zhang , Chuanbing Wang , Guanshan Pu

Recently, deep learning technology have been extensively used in the field of image recognition. However, its main application is the recognition and detection of ordinary pictures and common scenes. It is challenging to effectively and…

计算机视觉与模式识别 · 计算机科学 2022-06-09 Guangcun Shan , Hongyu Wang , Wei Liang , Congcong Liu , Qizi Ma , Quan Quan

Solar jets are impulsive, collimated plasma ejections that are triggered by magnetic reconnection. They are observed for many decades in various temperatures and wavelengths, therefore their kinematic characteristics, such as velocity and…

太阳与恒星天体物理 · 物理学 2022-08-17 Brigitte Schmieder , Reetika Joshi , Ramesh Chandra

An artificial intelligence (AI) control system is developed to maximize the mixing rate of a turbulent jet. This system comprises six independently operated unsteady minijet actuators, two hot-wire sensors placed in the jet, and genetic…

流体动力学 · 物理学 2020-06-24 Yu Zhou , Dewei Fan , Bingfu Zhang , Ruiying Li , Bernd R. Noack

We estimate the solar system motion relative to the cosmic microwave background using type Ia supernovae (SNe) measurements. We take into account the correlations in the error bars of the SNe measurements arising from correlated peculiar…

天体物理学 · 物理学 2009-11-13 Christopher Gordon , Kate Land , Anze Slosar

Extreme ultraviolet (EUV) images from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory (SDO) are providing new insights into the early phase of CME evolution. Observations now show the ejection of magnetic flux…

太阳与恒星天体物理 · 物理学 2014-09-05 Paolo Pagano , Duncan H. Mackay , Stefaan Poedts

On account of its polarizability and magnetic field sensitivity, as well as the role of neutral helium in partially ionized solar environments, the neutral helium triplet (orthohelium) system provides important, yet under-utilized,…

太阳与恒星天体物理 · 物理学 2018-10-10 Thomas A. Schad

Quasi-periodic fast propagating (QFP) wave trains observed in the solar corona after some energetic events (solar flares, coronal mass ejections, jets) open possibilities for diagnostics of spatial and temporal scales of the impulsive…

太阳与恒星天体物理 · 物理学 2026-05-14 V. A. Dmitriev , E. G. Kupriyanova , A. V. Mikhalchuk

Commercial operation of unmanned aerial vehicles (UAVs) would benefit from an onboard ability to sense and avoid (SAA) potential mid-air collision threats. In this paper we present a new approach for detection of aircraft below the horizon.…

机器人学 · 计算机科学 2019-03-11 Jasmin James , Jason J. Ford , Timothy L. Molloy

We present an empirical model based on the visible area covered by coronal holes close to the central meridian in order to predict the solar wind speed at 1 AU with a lead time up to four days in advance with a 1hr time resolution. Linear…

太阳与恒星天体物理 · 物理学 2015-06-03 T. Rotter , A. M. Veronig , M. Temmer , B. Vrsnak

We present high-resolution, high-cadence observations of six, fine-scale, on-disk jet-like events observed by the High-resolution Coronal Imager 2.1 (Hi-C 2.1) during its sounding-rocket flight. We combine the Hi-C 2.1 images with images…

Anomaly detection and its explanation is important in many research areas such as intrusion detection, fraud detection, unknown attack detection in network traffic and logs. It is challenging to identify the cause or explanation of why one…

机器学习 · 计算机科学 2023-08-02 Khushnaseeb Roshan , Aasim Zafar

The potential for catastrophic collision makes near-Earth asteroids (NEAs) a serious concern. Planetary defense depends on accurately classifying potentially hazardous asteroids (PHAs), however the complexity of the data hampers…

地球与行星天体物理 · 物理学 2025-03-21 Amit Kumar Mondal , Nafisha Aslam , Prasenjit Maji , Hemanta Kumar Mondal

Measurements of jet substructure in ultra-relativistic heavy ion collisions suggest that the jet showering process is modified by the interaction with quark gluon plasma. Modifications of the hard substructure of jets can be explored with…

高能物理 - 唯象学 · 物理学 2023-05-17 Lihan Liu , Julia Velkovska , Marta Verweij