Results 101 to 110 of about 39,482 (251)

Derivation and Application of a Scaling between Hinode/SP and SDO/HMI Vector Magnetic Fields to Improve Magnetic Field Extrapolations

The Astrophysical Journal
Full-disk measurements of the solar magnetic field by the Helioseismic and Magnetic Imager (HMI) are often used for magnetic field extrapolations, but its limited spatial and spectral resolution can lead to significant errors.
C. Beck, A. Prasad, Q. Hu, M. S. Yalim, S. Gosain, D. Prasad Choudhary   +5 more
doaj   +1 more source

Evidence of asymmetries in the Aldebaran photosphere from multiwavelength lunar occultations [PDF]

, 2016
A. Richichi, V. V. Dyachenko, A. K. Pandey, Saurabh Sharma, O. Tasuya, Y. Y. Balega, A. Beskakotov, Д. А. Растегаев, V. S. Dhillon   +8 more
openalex   +1 more source

Optical spectroscopy of Gaia detected protostars with DOT: can we probe protostellar photospheres? [PDF]

, 2023
Mayank Narang, P. Manoj, Himanshu Tyagi, Prasanta K. Nayak, Saurabh Sharma, Arun Surya, Bihan Banerjee, Blesson Mathew, Arpan Ghosh, Aayushi Verma   +9 more
openalex   +1 more source

Interpretation of HINODE SOT/SP asymmetric Stokes profiles observed in quiet Sun network and internetwork

, 2010
We present the first interpretation of the Stokes profile asymmetries measured in the FeI 630 nm lines by SOT/SP, in both quiet Sun internetwork (IN) and network regions.
Asensio Ramos, B. Viticchié, Bellot Rubio, Bommier, Bovelet, Cattaneo, Centeno, D. Del Moro, de Wijn, Domínguez Cerdeña, Domínguez Cerdeña, Domínguez Cerdeña, F. Berrilli, Faurobert-Scholl, Fischer, Ichimoto, J. Sánchez Almeida, Jin, Kosugi, Lites, Maltby, Nagata, Orozco Suárez, Orozco Suárez, Orozco Suárez, Rees, Ruiz Cobo, Shimizu, Skumanich, Socas-Navarro, Spruit, Stenflo, Suárez, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Tsuneta, Vögler, Wedemeyer-Böhm, Zhang   +44 more
core   +1 more source

Multi-height probing of horizontal flows in the solar photosphere

Astronomy & Astrophysics
Context. Optical flow methods aim to infer horizontal (transverse, in the general case) velocities in the solar atmosphere from the temporal changes in maps of physical quantities, such as intensity or magnetic field.
Kostić T., Milić I., Rempel M., Welsch B., Kazachenko M., Asensio Ramos A., Tremblay B.   +6 more
doaj   +1 more source

Planet Shadows in Protoplanetary Disks. I: Temperature Perturbations

, 2007
Planets embedded in optically thick passive accretion disks are expected to produce perturbations in the density and temperature structure of the disk. We calculate the magnitudes of these perturbations for a range of planet masses and distances.
Hannah Jang‐Condell, Shakura N. I., Siess L.   +2 more
core   +2 more sources

Neutrino Constraints and Detection Prospects from Gamma-Ray Bursts with Different Jet Compositions

The Astrophysical Journal
The prompt emission mechanism of gamma-ray bursts (GRBs) is a long-standing open question, and GRBs have been considered as potential sources of high-energy neutrinos. Despite many years of search for the neutrino events associated with GRBs from IceCube,
Yang-Dong-Jun Ou, Hou-Jun Lü, Xue-Zhao Chang, Xiao-Xuan Liu, En-Wei Liang   +4 more
doaj   +1 more source

The screening of interaction and the ionization equilibrium in the photospheres of stars [PDF]

, 2009
M. V. Vavrukh, O. M. Stelmakh, S. V. Smerechynskyi   +2 more
openalex   +1 more source

Origin of Deep Acoustic Sources Associated with Solar Magnetic Structures

, 2018
It is generally accepted that solar acoustic (p) modes are excited by near-surface turbulent motions, in particular, by downdrafts and interacting vortices in intergranular lanes.
Kitiashvili, Irina N., Kosovichev, Alexander G., Mansour, Nagi N., Sandstrom, Timothy A., Wray, Alan A.   +4 more
core   +1 more source

Magnetic Flux Emergence and Solar Eruptions in Partially Ionized Plasmas

The Astrophysical Journal
We have performed 3D MHD simulations to study the effect of partial ionization in the process of magnetic flux emergence in the Sun. In fact, we continue previous work, and we now focus (1) on the emergence of the magnetic fields above the solar ...
Georgios Chouliaras, V. Archontis
doaj   +1 more source