Výsledky vyhledávání

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Chemical composition of comets C/2021 A1 (Leonard) and C/2022 E3 (ZTF) from radio spectroscopy and the abundance of HCOOH and HNCO in comets

Autor: Biver, N., Bockelee-Morvan, D., Handzlik, B., Sandqvist, Aa., Boissier, J., Drozdovskaya, M. N., Moreno, R., Crovisier, J., Lis, D. C., Cordiner, M., Milam, S., Roth, N. X., Bonev, B. P., Russo, N. Dello, Vervack, R., Opitom, C., Kawakita, H.

Publikováno v: A&A 690, A271 (2024)

We present the results of a molecular survey of long period comets C/2021 A1 (Leonard) and C/2022 E3 (ZTF). Comet C/2021 A1 was observed with the IRAM 30-m radio telescope in November-December 2021 before perihelion when it was closest to the Earth.

Externí odkaz: http://arxiv.org/abs/2408.10759

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Radiative-convective models of the atmospheres of Uranus and Neptune: heating sources and seasonal effects

Autor: Milcareck, G., Guerlet, S., Montmessin, F., Spiga, A., Leconte, J., Millour, E., Clément, N., Fletcher, L. N., Roman, M. T., Lellouch, E., Moreno, R., Cavalié, T., Carrión-González, Ó.

Publikováno v: A&A 686, A303 (2024)

The observations made during the Voyager 2 flyby have shown that the stratosphere of Uranus and Neptune are warmer than expected by previous models. In addition, no seasonal variability of the thermal structure has been observed on Uranus since Voyag

Externí odkaz: http://arxiv.org/abs/2403.13399

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Tuning domain wall oscillation frequency in bent nanowires through a mechanical analogy

Autor: Bittencourt, G. H. R., Carvalho-Santos, V. L., Altbir, D., Chubykalo-Fesenko, O., Moreno, R.

In this work, we present a theoretical model for domain wall (DW) oscillations in a curved magnetic nanowire with a constant curvature under the action of a uniaxial magnetic field. Our results show that the DW dynamics can be described as that of th

Externí odkaz: http://arxiv.org/abs/2309.10051

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Akademický článek

Atmospheric black carbon in the metropolitan area of La Paz and El Alto, Bolivia: concentration levels and emission sources

Autor: V. Mardoñez-Balderrama, G. Močnik, M. Pandolfi, R. L. Modini, F. Velarde, L. Renzi, A. Marinoni, J.-L. Jaffrezo, I. Moreno R., D. Aliaga, F. Bianchi, C. Mohr, M. Gysel-Beer, P. Ginot, R. Krejci, A. Wiedensohler, G. Uzu, M. Andrade, P. Laj

Publikováno v: Atmospheric Chemistry and Physics, Vol 24, Pp 12055-12077 (2024)

Black carbon (BC) is a major component of submicron particulate matter (PM), with significant health and climate impacts. Many cities in emerging countries lack comprehensive knowledge about BC emissions and exposure levels. This study investigates B

Externí odkaz: https://doaj.org/article/0063707f4c92476a9ee489747c57d70a

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Water, hydrogen cyanide, carbon monoxide, and dust production from distant comet 29P/Schwassmann-Wachmann 1

Autor: Bockelée-Morvan, D., Biver, N., Schambeau, C. A., Crovisier, J., Opitom, C., Borro, M. de Val, Lellouch, E., Hartogh, P., Vandenbussche, B., Jehin, E., Kidger, M., Küppers, M., Lis, D. C., Moreno, R., Szutowicz, S., Zakharov, V.

29P/Schwassmann-Wachmann 1 is a distant Centaur/comet, showing persistent CO-driven activity and frequent outbursts. We used the Herschel space observatory in 2010, 2011, and 2013 to observe H$_2$O and NH$_3$ and to image the dust coma. Observations

Externí odkaz: http://arxiv.org/abs/2205.11425

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Domain wall damped harmonic oscillations induced by curvature gradients in elliptical magnetic nanowires

Autor: Bittencourt, G. H. R., Castillo-Sepúlveda, S., Chubykalo-Fesenko, O., Moreno, R., Altbir, D., Carvalho-Santos, V. L.

Understanding the domain wall (DW) dynamics in magnetic nanowires (NW) is crucial for spintronic-based applications demanding the use of DWs as information carriers. This work focuses on the dynamics of a DW displacing along a bent NW with an ellipti

Externí odkaz: http://arxiv.org/abs/2205.05716

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