Zobrazeno 1 - 10
of 609
pro vyhledávání: '"Jefferies, S"'
Autor:
Leist, M. T., Packham, C., Rosario, D. J. V., Hope, D. A., Alonso-Herrero, A., Hicks, E. K. S., Hönig, S., Zhang, L., Davies, R., Díaz-Santos, T., Ganzález-Martín, O., Bellocchi, E., Boorman, P. G., Combes, F., García-Bernete, I., García-Burillo, S., García-Lorenzo, B., Haidar, H., Ichikawa, K., Imanishi, M., Jefferies, S. M., Labiano, Á., Levenson, N. A., Nikutta, R., Pereira-Santaella, M., Almedia, C. Ramos, Ricci, C., Rigopoulou, D., Schaefer, W., Stalevski, M., Ward, M. J., Fuller, L., Izumi, T., Rouan, D., Shimizu, T.
The superb image quality, stability and sensitivity of the JWST permit deconvolution techniques to be pursued with a fidelity unavailable to ground-based observations. We present an assessment of several deconvolution approaches to improve image qual
Externí odkaz:
http://arxiv.org/abs/2312.14307
Autor:
Whitfield, G.A. ∗, ⁎, Bulbeck, H. †, Clifton-Hadley, L. ‡, Edwards, D. ‡, Jefferies, S. §, Jenkinson, M.D. ¶, ||, Griffin, M. ∗∗, Handley, J. ††, Megias, D. ‡‡, Sanghera, P. §§, Shaffer, R. ¶¶, Short, S. ||||, Wilson, W. ‡
Publikováno v:
In Clinical Oncology November 2024 36(11):681-689
Autor:
Stangalini, M., Jess, D. B., Verth, G., Fedun, V., Fleck, B., Jafarzadeh, S., Keys, P. H., Murabito, M., Calchetti, D., Aldhafeeri, A. A., Berrilli, F., Del Moro, D., Jefferies, S. M., Terradas, J., Soler, R.
Publikováno v:
A&A 649, A169 (2021)
The umbral regions of sunspots and pores in the solar photosphere are generally dominated by $3$~mHz oscillations, which are due to $p$-modes penetrating the magnetic region. In these locations, wave power is also significantly reduced with respect t
Externí odkaz:
http://arxiv.org/abs/2103.11639
Akademický článek
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Autor:
Stangalini, M., Causi, G. Li, Pedichini, F., Antoniucci, S., Mattioli, M., Christou, J., Consolini, G., Hope, D., Jefferies, S. M., Piazzesi, R., Testa, V.
In this work we explore the possibility of using Recurrence Quantification Analysis (RQA) in astronomical high-contrast imaging to statistically discriminate the signal of faint objects from speckle noise. To this end, we tested RQA on a sequence of
Externí odkaz:
http://arxiv.org/abs/1810.00714
Akademický článek
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Autor:
Marshall, Heather K., Spyromilio, Jason, Usuda, Tomonori, Zhou, Ye, Lee, T. K., Kuhn, J. R., de Oliveira, Mauricio, Cunnyngham, I., Jefferies, S., Langlois, M., Lewis, K., Lodieu, N., Moretto, G., Rebolo, R., Ritter, J., Swindle, R., Salata, S., Diego, R.
Publikováno v:
Proceedings of SPIE; August 2024, Vol. 13094 Issue: 1 p130943R-130943R-9, 1178497p
MHD wave propagation inside the Sun's atmosphere is closely related to the magnetic field topology. For example, magnetic fields are able to lower the cutoff frequency for acoustic waves thus allowing waves which would otherwise be trapped below the
Externí odkaz:
http://arxiv.org/abs/1108.4576
In our studies of the dynamics and energetics of the solar atmosphere, we have detected, in high-quality observations from Hinode SOT/NFI, ubiquitous small-scale upflows which move horizontally with supersonic velocities in the quiet Sun. We present
Externí odkaz:
http://arxiv.org/abs/1002.3305
The present study addresses the following questions: How representative of the actual velocities in the solar atmosphere are the Doppler shifts of spectral lines? How reliable is the velocity signal derived from narrowband filtergrams? How well defin
Externí odkaz:
http://arxiv.org/abs/1002.3285