Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Gonzalez, Nazaret Bello"'
Publikováno v:
A&A 673, A65 (2023)
Intermediate stages between pores and sunspots are a rare phenomenon and can manifest with the formation of transient photospheric penumbral-like filaments. Although the magnetic field changes rapidly during the evolution of such filaments, they have
Externí odkaz:
http://arxiv.org/abs/2303.03072
Publikováno v:
A&A 664, A195 (2022)
In a previous work, we investigated the evolution of the flow field around sunspots during sunspot decay and compared it with the flow field of supergranular cells. The decay of a sunspot proceeds as it interacts with its surroundings. This is manife
Externí odkaz:
http://arxiv.org/abs/2208.14272
Autor:
Rast, Mark P., González, Nazaret Bello, Rubio, Luis Bellot, Cao, Wenda, Cauzzi, Gianna, DeLuca, Edward, De Pontieu, Bart, Fletcher, Lyndsay, Gibson, Sarah E., Judge, Philip G., Katsukawa, Yukio, Kazachenko, Maria D., Khomenko, Elena, Landi, Enrico, Pillet, Valentin Martínez, Petrie, Gordon J. D., Qiu, Jiong, Rachmeler, Laurel A., Rempel, Matthias, Schmidt, Wolfgang, Scullion, Eamon, Sun, Xudong, Welsch, Brian T., Andretta, Vincenzo, Antolin, Patrick, Ayres, Thomas R., Balasubramaniam, K. S., Ballai, Istvan, Berger, Thomas E., Bradshaw, Stephen J., Carlsson, Mats, Casini, Roberto, Centeno, Rebecca, Cranmer, Steven R., DeForest, Craig, Deng, Yuanyong, Erdélyi, Robertus, Fedun, Viktor, Fischer, Catherine E., Manrique, Sergio J. González, Hahn, Michael, Harra, Louise, Henriques, Vasco M. J., Hurlburt, Neal E., Jaeggli, Sarah, Jafarzadeh, Shahin, Jain, Rekha, Jefferies, Stuart M., Keys, Peter H., Kowalski, Adam F., Kuckein, Christoph, Kuhn, Jeffrey R., Liu, Jiajia, Liu, Wei, Longcope, Dana, McAteer, R. T. James, McIntosh, Scott W., McKenzie, David E., Miralles, Mari Paz, Morton, Richard J., Muglach, Karin, Nelson, Chris J., Panesar, Navdeep K., Parenti, Susanna, Parnell, Clare E., Poduval, Bala, Reardon, Kevin P., Reep, Jeffrey W., Schad, Thomas A., Schmit, Donald, Sharma, Rahul, Socas-Navarro, Hector, Srivastava, Abhishek K., Sterling, Alphonse C., Suematsu, Yoshinori, Tarr, Lucas A., Tiwari, Sanjiv, Tritschler, Alexandra, Verth, Gary, Vourlidas, Angelos, Wang, Haimin, Wang, Yi-Ming, NSO, project, DKIST, scientists, DKIST instrument, Group, the DKIST Science Working, Community, the DKIST Critical Science Plan
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control the structure and dynamics of the Sun and its atmosphere. The first-light DKIST images, released pu
Externí odkaz:
http://arxiv.org/abs/2008.08203
Autor:
Jurcak, Jan, Schmassmann, Markus, Rempel, Matthias, Gonzalez, Nazaret Bello, Schlichenmaier, Rolf
Publikováno v:
A&A 638, A28 (2020)
The analyses of sunspot observations revealed a fundamental magnetic property of the umbral boundary, the invariance of the vertical component of the magnetic field. We aim to analyse the magnetic properties of the umbra-penumbra boundary in simulate
Externí odkaz:
http://arxiv.org/abs/2004.03940
The moat flow, a radial outflow surrounding fully fledged sunspots, is a well characterised phenomenon. Nevertheless, its origin and especially its relation to the penumbra is still a controversial topic. We investigate the evolution of the horizonta
Externí odkaz:
http://arxiv.org/abs/1811.01621
Publikováno v:
A&A 620, A122 (2018)
We investigate the evolution of the horizontal flow field around sunspots during their decay by analysing its extension and horizontal velocity around eight spots using SDO/HMI Doppler maps. By assuming a radially symmetrical flow field, the applied
Externí odkaz:
http://arxiv.org/abs/1811.01607
Publikováno v:
A&A 620, A104 (2018)
Context. In a recent statistical study of sunspots in 79 active regions, the vertical magnetic field component $B_\text{ver}$ averaged along the umbral boundary is found to be independent of sunspot size. The authors of that study conclude that the a
Externí odkaz:
http://arxiv.org/abs/1810.09358
Publikováno v:
A&A 611, L4 (2018)
Sunspots are the longest-known manifestation of solar activity, and their magnetic nature has been known for more than a century. Despite this, the boundary between umbrae and penumbrae, the two fundamental sunspot regions, has hitherto been solely d
Externí odkaz:
http://arxiv.org/abs/1801.08983
Publikováno v:
A&A 602, L12 (2017)
Observations of multi-wavelength and therefore height-dependent information following events throughout the solar atmosphere and unambiguously assigning a relation between these rapidly evolving layers are rare and difficult to obtain. Yet, they are
Externí odkaz:
http://arxiv.org/abs/1706.00770
Publikováno v:
A&A 597, A60 (2017)
We recently presented evidence that stable umbra-penumbra boundaries are characterised by a distinct canonical value of the vertical component of the magnetic field, $B^{\rm stable}_{\rm ver}$. In order to trigger the formation of a penumbra, large i
Externí odkaz:
http://arxiv.org/abs/1612.01745