All-sky Meteor Orbit System AMOS and preliminary analysis of three unusual meteor showers

Tóth, Juraj; Kornoš, Leonard; Zigo, P.; Gajdoš, Š.; Kalmančok, D.; Világi, Jozef; Šimon, Jaroslav; Vereš, Peter; Šilha, Jiří; Buček, M.; Galád, A.; Rusňák, Patrik; Hrábek, Peter; Ďuriš, František; Rudawska, Regina

doi:10.1016/j.pss.2015.07.007

Cited by 37 publications

(20 citation statements)

References 16 publications

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“…Particular focus will be placed on 16 of these spectra, which were observed in Modra Observatory, Slovakia. Multi-station observations for 14 of these meteors were provided by four AMOS stations comprising the Slovak Video Meteor Network, which carries out routine meteor observations on every clear night (Tóth et al, 2011;Tóth at al., 2015), supplemented by individual observations provided by Pavel Spurný (European Fireball Network) and Jakub Koukal (Central European MEteor NeTwork).…”

Section: Observations and Data Reductionmentioning

confidence: 99%

“…can be captured along with its spectrum. More details about the properties and capabilities of the AMOS systems can be found in Tóth et al (2015). The main disadvantage of the wide-field camera is the interference of the moonlight and bright Moon spectrum causing occasional difficulties in meteor detection.…”

Section: Observations and Data Reductionmentioning

confidence: 99%

“…Previous measurements and orbital analyses of known meteor streams have demonstrated the astrometric precision of the AMOS system (Tóth et al, 2015). The system achieves higher orbital accuracy compared to most all-sky video systems due to significantly higher pixel resolution.…”

Section: Photometry and Astrometrymentioning

confidence: 99%

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Spectra and physical properties of Taurid meteoroids

Matlovič

Tóth

Rudawska

et al. 2017

Planetary and Space Science

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Taurids are an extensive stream of particles produced by comet 2P/Encke, which can be observed mainly in October and November as a series of meteor showers rich in bright fireballs. Several near-Earth asteroids have also been linked with the meteoroid complex, and recently the orbits of two carbonaceous meteorites were proposed to be related to the stream, raising interesting questions about the origin of the complex and the composition of 2P/Encke. Our aim is to investigate the nature and diversity of Taurid meteoroids by studying their spectral, orbital, and physical properties determined from video meteor observations. Here we analyze 33 Taurid meteor spectra captured during the predicted outburst in November 2015 by stations in Slovakia and Chile, including 14 multi-station observations for which the orbital elements, material strength parameters, dynamic pressures, and mineralogical densities were determined. It was found that while orbits of the 2015 Taurids show similarities with several associated asteroids, the obtained spectral and physical characteristics point towards cometary origin with highly heterogeneous content. Observed spectra exhibited large dispersion of iron content and significant Na intensity in all cases. The determined material strengths are typically cometary in the K B classification, while P E criterion is on average close to values characteristic for carbonaceous bodies. The studied meteoroids were found to break up under low dynamic pressures of 0.02 -0.10 MPa, and were characterized by low mineralogical densities of 1.3 -2.5 g cm -3 . The widest spectral classification of Taurid meteors to date is presented.

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Section: Observations and Data Reductionmentioning

confidence: 99%

Section: Observations and Data Reductionmentioning

confidence: 99%

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Spectra and physical properties of Taurid meteoroids

Matlovič

Tóth

Rudawska

et al. 2017

Planetary and Space Science

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“…All-sky camera systems such as AMOS can obtain spectra for typical meteors down to a size scale of ∼ 1cm, and considering that halo interstellar meteor impact speeds are approximately ten times higher than typical meteors, we estimate that, with an adequate frame rate, a system with the sensitivity of AMOS could obtain spectra for halo meteors down to a size scale of ∼ 2mm (Toth et al 2015).…”

Section: Abundance and Detectabilitymentioning

confidence: 99%

Halo Meteors

Siraj,

Loeb

2019

Preprint

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The stellar halo contains some of the oldest stars in the Milky Way galaxy and in the universe. The detections of 'Oumuamua, CNEOS 2014-01-08, and interstellar dust serve to calibrate the production rate of interstellar objects. We study the feasibility of a search for interstellar meteors with origins in the stellar halo. We find the mean heliocentric impact speed for halo meteors to be ∼ 270 km s −1 , and the standard deviation is ∼ 90 km s −1 , making the population kinematically distinct from all other meteors, which are an order-of-magnitude slower. We explore the expected abundance of halo meteors, finding that a network of all-sky cameras covering all land on Earth can take spectra and determine the orbits of a few hundred halo meteors larger than a few mm per year. The compositions of halo meteors would provide information on the characteristics of planetary system formation for the oldest stars. In addition, one could place tight constraints on baryonic dark matter objects of low masses.

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“…This also demands systematic monitoring of the near-Earth space. There are several surveys, such as the NASA All Sky Fireball Network (Cooke & Moser 2012), the Spanish Meteor and Fireball Network (SPMN; Pujols et al 2013), the All-sky Meteor Orbit System (AMOS; Tóth et al 2015), the Cameras for Allsky Meteor Surveillance (CAMS; Tables A.1 and A.2 are also available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/598/A40 Jenniskens et al 2011), and others, which provide the basis for the most up-to-date information on the meteoroid environment.…”

Section: Introductionmentioning

confidence: 99%

Separation and confirmation of showers

Neslušan

Hajduková

2017

A&A

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Aims. Using IAU MDC photographic, IAU MDC CAMS video, SonotaCo video, and EDMOND video databases, we aim to separate all provable annual meteor showers from each of these databases. We intend to reveal the problems inherent in this procedure and answer the question whether the databases are complete and the methods of separation used are reliable. We aim to evaluate the statistical significance of each separated shower. In this respect, we intend to give a list of reliably separated showers rather than a list of the maximum possible number of showers. Methods. To separate the showers, we simultaneously used two methods. The use of two methods enables us to compare their results, and this can indicate the reliability of the methods. To evaluate the statistical significance, we suggest a new method based on the ideas of the break-point method.Results. We give a compilation of the showers from all four databases using both methods. Using the first (second) method, we separated 107 (133) showers, which are in at least one of the databases used. These relatively low numbers are a consequence of discarding any candidate shower with a poor statistical significance. Most of the separated showers were identified as meteor showers from the IAU MDC list of all showers. Many of them were identified as several of the showers in the list. This proves that many showers have been named multiple times with different names. Conclusions. At present, a prevailing share of existing annual showers can be found in the data and confirmed when we use a combination of results from large databases. However, to gain a complete list of showers, we need more-complete meteor databases than the most extensive databases currently are. We also still need a more sophisticated method to separate showers and evaluate their statistical significance.

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All-sky Meteor Orbit System AMOS and preliminary analysis of three unusual meteor showers

Cited by 37 publications

References 16 publications

Spectra and physical properties of Taurid meteoroids

Spectra and physical properties of Taurid meteoroids

Halo Meteors

Separation and confirmation of showers

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