Solar Radio Bursts Associated with In Situ Detected Energetic Electrons in Solar Cycles 23 and 24

Miteva, R.; Samwel, Susan W.; Zabunov, Svetoslav

doi:10.3390/universe8050275

Cited by 8 publications

(9 citation statements)

References 51 publications

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“…A detailed review on previous works can be found in Klein (2021b). Miteva, Samwel, and Zabunov (2022) reported for the first time on the association between SEEs 10 (Samwel and Miteva, 2021) and radio emissions. When starting with the list of in situ electrons, the association rate with m-IIs in SC 24 is in the range 12−28%, whereas with DH-IIs is 23−29%.…”

Section: • In Situ Particlesmentioning

confidence: 99%

Metric type-II radio bursts and space weather phenomena: A statistical study

Devi

Miteva

Chandra

et al. 2023

Preprint

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In this paper, we present for the first time a comprehensive statistical study on metric type II radio bursts (m-IIs) and their associated solar and space weather (SW) phenomena, namely, solar flares (SFs), sunspot (SN) configu- rations, coronal mass ejections (CMEs), their interplanetary (IP) counterparts (ICMEs) and shocks, filaments, in situ detected particles and geomagnetic storms (GSs). The radio signatures were identified from dynamic spectra provided by the ground-based RSTN network distributed over the globe with nearly complete diurnal coverage. Based on the recently completed catalog of m-IIs in solar cycle 24, we perform the temporal and spatial association between the radio emission and listed above activity events. The remaining data is collected from various space-based satellites, ground-based observatories or public catalogs. We complement the m-II results with m+IP IIs where the IP IIs are identified from the Wind/WAVES spacecraft. Occurrence rates are calculated and presented as a function of the strength of the specific SW event type: higher rates are obtained with CMEs, SFs, and SN configurations, whereas a much weaker relationship is found with ICMEs, IP shocks, energetic particles, and GSs. The obtained relationships can be utilized in empirical or physics-based models for SW forecasting.

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Section: • In Situ Particlesmentioning

confidence: 99%

Metric type-II radio bursts and space weather phenomena: A statistical study

Devi

Miteva

Chandra

et al. 2023

Preprint

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“…Wind/ WAVES Bougeret et al, 1995) operate near or below these frequencies because they are located well beyond Earth's ionosphere. An instructive table of SRB detectors can be found in Table 1 of Miteva et al (2022). DLITE's primary strength as a SRB detector is its sensitivity.…”

Section: Dlite As An Srb Detectormentioning

confidence: 99%

“…Similar to Type II bursts, these decrease in frequency as the electron beams move through coronal plasma with decreasing background electron densities. The frequency drift rate is much larger than Type II bursts, varying from several MHz s −1 to ≲ 100 MHz s −1 (Reid, 2020;Miteva et al, 2022). The dynamics of Type III bursts can give insights into the evolution of coronal structures like flux tubes.…”

Section: Introductionmentioning

confidence: 99%

“…Type II bursts cover a broad range in frequencies, corresponding to the shock propagating outward and encountering more tenuous plasma. The frequency drift rate is ≈ − 0.1 to − 0.4 MHz s −1 , where the negative sign represents a decrease in frequency over time (Carley et al, 2020;Miteva et al, 2022). Both the fundamental and harmonic bands can each "split" into upper and lower bands; the frequency difference between the upper and lower bands is associated with the shockcompression ratio and, therefore, provides an estimate for the Alfvén Mach number that can be used to estimate the coronal magnetic field strength local to the shock (Vršnak et al, 2004;Gopalswamy et al, 2012;Kumari et al, 2017;Mahrous et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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DLITE—An inexpensive, deployable interferometer for solar radio burst observations

Carson

Kooi²,

Helmboldt³

et al. 2022

Front. Astron. Space Sci.

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Solar radio bursts (SRBs) are brief periods of enhanced radio emission from the Sun. SRBs can provide unique insights into the plasma structure where emission occurs. SRBs can also provide critical information concerning space weather events such as coronal mass ejections or solar energetic particle events. Providing continuous monitoring of SRBs requires a full network of detectors continuously monitoring the Sun. A promising new network is being developed, employing a four-element interferometer called the Deployable Low-band Ionosphere and Transient Experiment (DLITE) array. DLITE, which operates in a 30–40 MHz band, was specifically designed to probe the Earth’s ionosphere using high resolution measurements (1.024-s temporal resolution, 16.276-kHz frequency resolution); however, this also makes DLITE a powerful new tool for providing detailed observations of SRBs at these frequencies. DLITE is particularly adept at detecting long-duration SRBs like Type II and Type IV bursts. DLITE provides high resolution SRB data that can complement ground-based networks like e-Callisto or space-based observations, e.g., from Wind/WAVES. As an inexpensive interferometer, DLITE has strong potential as an educational tool: DLITE can be used to study the ionosphere, SRBs, and even Jovian radio bursts. Future DLITE arrays could be enhanced by using the full 20–80 MHz band accessible by the antennas and employing its millisecond time-resolution capability; this would improve DLITE’s ability to track long-duration bursts, create the opportunity to study short-duration Type III bursts in detail, and, in particular, make the study of Type I bursts practical.

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“…Such a fascinating and advanced mission would be of great scientific interest to obtain information and solve fundamental physical questions about the formation mechanism of the heliospheric boundary, the nature of the nearby interstellar medium [2], the structure and dynamics of the heliosphere, and the distribution of matter in this part of interplanetary space [3]. Many, if not all, of these issues can only be solved through in situ measurements such as plasma density, ionization state, dust composition and magnetic field strength [4]. However, missions towards (and even beyond) the heliopause region represent a technological challenge [5], as they require the use of advanced propulsion systems [6] to guarantee a cruise velocity of at least 10 au/year if the spacecraft has to be able to reach the desired (very long) distance, greater than 100 au, in a reasonable time interval.…”

Section: Introductionmentioning

confidence: 99%

Trajectory Analysis and Optimization of Hesperides Mission

Mengali¹,

Quarta²

2022

Universe

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A challenging problem from a technological viewpoint is to send a spacecraft at a distance of about 600 au from the Sun, comparable with that of the Sun’s gravitational focus (that is, the general relativistic focusing of light rays, whose minimum solar distance is obtained when the light rays are assumed to graze the Sun’s surface), and reach it in a time interval on the order of a human working lifetime. A suitably oriented telescope at that distance would be theoretically able to observe exoplanets tens of light years far away and possibly to discover new life forms. The transfer trajectory of this mission is rather complex and requires a close selection of a suitable propulsion system, which must be able to provide the probe with the necessary energy to cruise at a velocity greater than 10 au/year. An effective outline of the these concepts is given by the Hesperides mission, originally proposed by Matloff in 2014. An interesting aspect of this mission proposal is the combination of a nuclear electric propulsion system and a classical solar sail that are jointly exploited to reach the necessary solar system escape velocity. However, the trajectory analysis reported by Matloff is very simplified and is essentially concentrated on a rough estimate of the time required by the spacecraft to reach a distance of 600au. Starting from the Hesperides baseline mission proposal, including the vehicle mass distribution, the aim of this work is to give a detailed mission analysis in an optimal framework. In particular, the spacecraft minimum time trajectory is calculated with indirect methods and a parametric analysis is made to highlight the impact of the main design parameters on the total flight time. The simulations show a substantial reduction of the mission time when compared with the original study.

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Solar Radio Bursts Associated with In Situ Detected Energetic Electrons in Solar Cycles 23 and 24

Cited by 8 publications

References 51 publications

Metric type-II radio bursts and space weather phenomena: A statistical study

Metric type-II radio bursts and space weather phenomena: A statistical study

DLITE—An inexpensive, deployable interferometer for solar radio burst observations

Trajectory Analysis and Optimization of Hesperides Mission

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