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Jordanova, Neli; Jordanova, Diana; Petrovský, Eduard; Kovacheva, Mary

doi:10.1023/a:1022088213666

Cited by 6 publications

(1 citation statement)

References 33 publications

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“…The simultaneous and continuous monitoring of particle fluxes, electromagnetic fields and plasma composition is a requirement to determine how and where waves control the radiation-belt dynamics. Even though the largest changes in the geomagnetic field are due to the ring current variation during a geomagnetic storm (Kintner et al 2002;Jordanova et al 2006;Zaharia et al 2006;Piersanti & Villante 2016), also resonant waveparticle interactions strongly affect belt electrons. Indeed, the chorus can both accelerate relativistic electrons and make them precipitate, while the plasmaspheric hiss can control the location and dynamics of the "slot" region (Vellante et al 2014,b).…”

Section: Stability Of the Van Allen Beltsmentioning

confidence: 99%

Scientific Goals and In-orbit Performance of the High-energy Particle Detector on Board the CSES

Picozza

Battiston

Ambrosi

et al. 2019

ApJS

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The CSES satellite aims to monitor electromagnetic-, particle-and plasma perturbations in the ionomagnetosphere and inner Van Allen radiation belts, originated by electromagnetic sources external and internal to the geomagnetic cavity, cosmic rays and solar events. In particular, the objective of the space mission is to investigate lithosphere-atmosphere-ionosphere coupling mechanisms (including effects of lightning, earthquakes, volcanoes and artificial electromagnetic emissions) that induce perturbations of the top side of the ionosphere and lower boundary of the radiation belts.To this purpose, the mission has been conceived to take advantage of a multi-instrument payload comprising nine detectors for the measurement of electromagnetic field components, plasma parameters and energetic particles, as well as X-ray flux. The Italian team participating in the CSES mission has built one of these devices, the High-Energy Particle Detector (HEPD), for high-precision observations of electrons, protons and light nuclei. During its trip along the orbit, and thanks to the large set of detectors operated on board, CSES completely monitors the Earth, acting as an excellent instrument for Space Weather.

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Section: Stability Of the Van Allen Beltsmentioning

confidence: 99%

Scientific Goals and In-orbit Performance of the High-energy Particle Detector on Board the CSES

Picozza

Battiston

Ambrosi

et al. 2019

ApJS

View full text Add to dashboard Cite

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Mössbauer and mineral magnetic studies on archaeological potteries from Adhichanallur, Tamilnadu, India

Venkatachalapathy¹,

Bakas²,

Basavaiah³

et al. 2008

Icame 2007

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Mössbauer and mineral magnetic studies on archaeological potteries from Adhichanallur, Tamilnadu, India

et al. 2008

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Megalithic potteries collected from Adhichanallur, Tamilnadu, India (Lat. 8 • 44 N; Long. 77 • 42 E) have been subjected to various spectroscopic and rock magnetic studies. The type of clay, their origin, level of structural deformation due to firing, firing temperature and atmospheric condition followed during making the potteries are analyzed. The potteries were subjected to Mössbauer and X-ray diffraction studies to analyze the iron phases in them. It is found that the samples were made of local clay (red clay), fired above 600 • C under open atmospheric and/or reduced atmospheric conditions and air has been allowed during cooling. The Mössbauer spectra reveal the presence of Fe 3+ , Fe 2+ and iron oxides of hematite and magnetite. The firing temperature and firing conditions established from Mössbauer studies are similar to the observation made from FT-IR studies. The magnetic mineral types, the mass fractions and the domain states of the constituent magnetic grains were elucidated from a range of rock magnetic measurements including variation of susceptibility with low field, frequency and temperature, hysteresis parameters and isothermal remanence acquisition data. The magnetic mineralogy of most pottery samples was dominated by magnetite/(titano) magnetite, while magnetic grain size spectrum varies from very fine (super paramagnetic) to fine (stable single domain, pseudo single domain). The reversible thermo magnetic behavior reflects no mineralogical transformations during reheating and all the samples show same Curie temperature 580 • C due to magnetite. From the above information it is demonstrated that these samples are suitable for determining the reliable ancient geomagnetic field intensity values existed during that period. R. Venkatachalapathy (B) C.A.S in Marine

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Cited by 6 publications

References 33 publications

Scientific Goals and In-orbit Performance of the High-energy Particle Detector on Board the CSES

Scientific Goals and In-orbit Performance of the High-energy Particle Detector on Board the CSES

Mössbauer and mineral magnetic studies on archaeological potteries from Adhichanallur, Tamilnadu, India

Mössbauer and mineral magnetic studies on archaeological potteries from Adhichanallur, Tamilnadu, India

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