Zobrazeno 1 - 10
of 746
pro vyhledávání: '"WHITE, S. M."'
Autor:
Manoharan, P. K., Salter, C. J., White, S. M., Perillat, P., Fernandez, F., Perera, B., Venkataraman, A., Brum, C.
Strong solar magnetic fields are the energy source of intense flares and energetic coronal mass ejections of space weather importance. The key issue is the difficulty in predicting the occurrence time and location of strong solar eruptions, those lea
Externí odkaz:
http://arxiv.org/abs/2307.00328
Autor:
Santos, J. M. da Silva, White, S. M., Reardon, K., Cauzzi, G., Gunár, S., Heinzel, P., Leenaarts, J.
Quiescent filaments appear as absorption features on the solar disk when observed in chromospheric lines and at continuum wavelengths in the millimeter (mm) range. Active region (AR) filaments are their small-scale, low-altitude analogues, but they c
Externí odkaz:
http://arxiv.org/abs/2204.13178
Autor:
Santos, J. M. da Silva, Danilovic, S., Leenaarts, J., Rodríguez, J. de la Cruz, Zhu, X., White, S. M., Vissers, G. J. M., Rempel, M.
Publikováno v:
A&A 661, A59 (2022)
The solar chromosphere is heated to temperatures higher than predicted by radiative equilibrium. This excess heating is greater in active regions where the magnetic field is stronger. We aim to investigate the magnetic topology associated with an are
Externí odkaz:
http://arxiv.org/abs/2202.03955
Efforts are underway to use high-precision timing of pulsars in order to detect low-frequency gravitational waves. A limit to this technique is the timing noise generated by dispersion in the plasma along the line of sight to the pulsar, including th
Externí odkaz:
http://arxiv.org/abs/2202.01251
Publikováno v:
Sol Phys 296, 144 (2021)
Motivated by dark coronal lanes in SOHO / EIT 284 {\AA} EUV observations we construct and optimize an atmosphere model of the AR 8535 sunspot by adding a cool and dense component in the volume of plasma along open field lines determined using the Pot
Externí odkaz:
http://arxiv.org/abs/2102.05476
Autor:
Santos, J. M. da Silva, Rodríguez, J. de la Cruz, White, S. M., Leenaarts, J., Vissers, G. J. M., Hansteen, V. H.
Publikováno v:
A&A 643, A41 (2020)
We aim to investigate the temperature enhancements and formation heights of impulsive heating phenomena in solar active-regions such as Ellerman bombs (EBs), ultraviolet bursts (UVBs), and flaring active-region fibrils (FAFs) using interferometric ob
Externí odkaz:
http://arxiv.org/abs/2006.14564
Publikováno v:
ApJ 884:141 2019
Using four years of full-disk-integrated coronal differential emission measures calculated in Schonfeld et al. (2017), we investigate the relative contribution of bremsstrahlung and gyroresonance emission in observations of F$_{10.7}$, the 10.7 cm (2
Externí odkaz:
http://arxiv.org/abs/1910.12964
Autor:
Brajša, R., Sudar, D., Skokic, I., Benz, A. O., Kuhar, M., Kobelski, A., Wedemeyer, S., White, S. M., Ludwig, H. -G., Temmer, M., Saar, S. H., Selhorst, C. L.
In this work we use solar observations with the ALMA radio telescope at the wavelength of 1.21 mm. The aim of the analysis is to improve understanding of the solar chromosphere, a dynamic layer in the solar atmosphere between the photosphere and coro
Externí odkaz:
http://arxiv.org/abs/1812.07293
We perform simulations of the capabilities of the next generation Very Large Array to image stellar radio photospheres. For very large (in angle) stars, such as red supergiants within a few hundred parsecs, good imaging fidelity results can be obtain
Externí odkaz:
http://arxiv.org/abs/1810.05055
The ionosphere contributes time-varying Faraday Rotation (FR) to radio signals passing through it. Correction for the effect of the ionosphere is important for deriving magnetic field information from FR observations of polarized cosmic radio sources
Externí odkaz:
http://arxiv.org/abs/1806.02802