Getting Started in Radio Astronomy

Arnold, Steven

doi:10.1007/978-1-4614-8157-7

Cited by 3 publications

(2 citation statements)

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“…We monitor VLF as it is readily available all over the world and because it is transmitted at constant power. [1,5,6]…”

Section: The Ionospherementioning

confidence: 99%

“…This makes us more vulnerable as more systems depend on electricity to function properly. Due to the immense impact these solar storms can have on business, telecommunication systems, and other aspects of our life, we found that ionospheric disturbances are an interesting study and hence the focus of our project [2,5,6]. The different categories of solar flares are:…”

Section: Solar Flaresmentioning

confidence: 99%

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Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope

Aqasha¹,

Zheng²,

Athreya³

et al. 2020

EPJ Web Conf.

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Low-frequency radio telescopes are cheap and useful devices for the investigation of terrestrial and extra-terrestrial emissions. These emissions come either from the Sun and the planet Jupiter to terrestrial emissions. This project aims to investigate the Very Low Frequency (VLF) waves from mid-August to October 2019 using Radio JOVE (20 MHz) and SSID (3-30 kHz) to observe for the occurrence of solar flares and see how if the radio telescopes that the team set up is reliable. This will allow us future students aspiring to learn about astronomy to examine solar flares in detail during the upcoming solar maximum. Not many flares were detected as this period happens to be a solar minimum. However, a series of flares occurred between 30 September 2019 and 1 October 2019, which the telescopes have been able to detect, particularly SSID.

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“…We monitor VLF as it is readily available all over the world and because it is transmitted at constant power. [1,5,6]…”

Section: The Ionospherementioning

confidence: 99%

Section: Solar Flaresmentioning

confidence: 99%

Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope

Aqasha¹,

Zheng²,

Athreya³

et al. 2020

EPJ Web Conf.

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SWELTO - Space WEather Laboratory in Turin Observatory

Бемпорад

Abbo²,

Barghini³

et al. 2020

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Complex Three-Dimensional Mathematical Model of the Ignition of a Coniferous Tree via a Cloud-to-Ground Lightning Discharge: Electrophysical, Thermophysical and Physico-Chemical Processes

Baranovskiy

2023

Forests

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Thunderstorms are the main natural source of forest fires. The ignition mechanism of trees begins with the impact of cloud-to-ground lightning discharge. A common drawback of all predicting systems is that they ignore the physical mechanism of forest fire as a result of thunderstorm activity. The purpose of this article is to develop a physically based mathematical model for the ignition of a coniferous tree via cloud-to-ground lightning discharge, taking into account thermophysical, electrophysical, and physicochemical processes. The novelty of the article is explained by the development of an improved mathematical model for the ignition of coniferous trees via cloud-to-ground lightning discharge, taking into account the processes of soot formation caused by the thermal decomposition phase of dry organic matter. Mathematically, the process of tree ignition is described by a system of non-stationary nonlinear differential equations of heat conduction and diffusion. In this research, a locally one-dimensional method is used to solve three-dimensional partial differential equations. The finite difference method is used to solve one-dimensional heat conduction and diffusion equations. Difference analogues of the equations are solved using the marching method. To resolve nonlinearity, a simple iteration method is used. Temperature distributions in a structurally inhomogeneous trunk of a coniferous tree, as well as distributions of volume fractions of phases and concentrations of gas mixture components, are obtained. The conditions for tree trunk ignition under conditions of thunderstorm activity are determined. As a result, a complex three-dimensional mathematical model is developed, which makes it possible to identify the conditions for the ignition of a coniferous tree trunk via cloud-to-ground lightning discharge.

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Getting Started in Radio Astronomy

Cited by 3 publications

References 0 publications

Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope

Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope

SWELTO - Space WEather Laboratory in Turin Observatory

Complex Three-Dimensional Mathematical Model of the Ignition of a Coniferous Tree via a Cloud-to-Ground Lightning Discharge: Electrophysical, Thermophysical and Physico-Chemical Processes

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