Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Thomas A. Schad"'
Autor:
Tetsu Anan, Roberto Casini, Han Uitenbroek, Thomas A. Schad, Hector Socas-Navarro, Kiyoshi Ichimoto, Sarah A. Jaeggli, Sanjiv K. Tiwari, Jeffrey W. Reep, Yukio Katsukawa, Ayumi Asai, Jiong Qiu, Kevin P. Reardon, Alexandra Tritschler, Friedrich Wöger, Thomas R. Rimmele
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract The efficient release of magnetic energy in astrophysical plasmas, such as during solar flares, can in principle be achieved through magnetic diffusion, at a rate determined by the associated electric field. However, attempts at measuring el
Externí odkaz:
https://doaj.org/article/1c1ccbb820d44227aa9c3624f67db35a
Autor:
Thomas A. Schad, Andre Fehlmann, Gabriel I. Dima, Jeffrey R. Kuhn, Isabelle F. Scholl, David Harrington, Thomas Rimmele, Alexandra Tritschler, Alin R. Paraschiv
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 40 (2024)
We report commissioning observations of the Si x 1430 nm solar coronal line observed coronagraphically with the Cryogenic Near-Infrared Spectropolarimeter at the National Science Foundation’s Daniel K. Inouye Solar Telescope. These are the first kn
Externí odkaz:
https://doaj.org/article/edac37d087ee48fca78741246c8979be
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 171 (2023)
The solar corona produces coronal rain, hundreds of times colder and denser material than the surroundings. Coronal rain is known to be deeply linked to coronal heating, but its origin, dynamics, and morphology are still not well understood. The lead
Externí odkaz:
https://doaj.org/article/0f181835d3994cba846c0c55116f8c31
Autor:
Thomas A. Schad, Jeffrey R. Kuhn, Andre Fehlmann, Isabelle F. Scholl, David Harrington, Thomas Rimmele, Alexandra Tritschler
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 1, p 59 (2023)
The Cryogenic Near-Infrared Spectropolarimeter (Cryo-NIRSP) is now conducting science operations at the National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST). We report results obtained during instrument commissioning that advance
Externí odkaz:
https://doaj.org/article/8db1793b4e744019a13f50bcbc7de675
Autor:
David M. Harrington, Stacey R. Sueoka, Thomas A. Schad, Christian Beck, Arthur D. Eigenbrot, Alfred G. de Wijn, Roberto Casini, Amanda J. White, Sarah A. Jaeggli
Publikováno v:
Solar Physics. 298
The Daniel K. Inouye Solar Telescope (DKIST) advances studies of solar magnetism through high-precision and accuracy in polarimetry at frontier spatial and temporal scales. A system model for polarization response in azimuth and altitude has been dev
Autor:
André Fehlmann, Jeffrey R. Kuhn, Thomas A. Schad, Isabelle F. Scholl, Rebecca Williams, Rodell Agdinaoay, D. Christopher Berst, Simon C. Craig, Cynthia Giebink, Bret Goodrich, Kirby Hnat, Don James, Charles Lockhart, Donald L. Mickey, Daniel Oswald, Myles M. Puentes, Richard Schickling, Jean-Benoit de Vanssay, Eric A. Warmbier
Publikováno v:
Solar Physics. 298
The Cryogenic Near-Infrared Spectro-Polarimeter (Cryo-NIRSP) is a combination slit-based spectrograph and context-imaging instrument designed and built for the National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST). It is optimized
Autor:
Sarah A. Jaeggli, Haosheng Lin, Peter Onaka, Hubert Yamada, Tetsu Anan, Morgan Bonnet, Gregory Ching, Xiao-Pei Huang, Maxim Kramar, Helen McGregor, Garry Nitta, Craig Rae, Louis Robertson, Thomas A. Schad, Paul Toyama, Jessica Young, Chris Berst, David M. Harrington, Mary Liang, Myles Puentes, Predrag Sekulic, Brett Smith, Stacey R. Sueoka
Publikováno v:
Solar Physics. 297
TheDiffraction-Limited Near-Infrared Spectropolarimeter(DL-NIRSP) is one of the first-light instruments for the National Science Foundation’sDaniel K. Inouye Solar Telescope(DKIST). DL-NIRSP is an integral-field, dual-beam spectropolarimeter intend
We present a new approach for correcting instrumental polarization by modeling the non-depolarizing effects of a complex series of optical elements to determine physically realizable Mueller matrices. Provided that the Mueller matrix of the optical s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b1a7ce1efd0315b3477ebe30e60a045
http://arxiv.org/abs/2204.03732
http://arxiv.org/abs/2204.03732
Autor:
Gabriel Dima, Thomas A. Schad
Publikováno v:
Solar Physics. 296
Photoexcited forbidden lines at visible and infrared wavelengths provide important diagnostics for the coronal magnetic field via scattering induced polarization and the Zeeman effect. In forward models, the polarized formation of these lines is ofte
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems. 7
Astronomical spectropolarimeters require high accuracy polarizers with large aperture and stringent uniformity requirements. In solar applications, wire grid polarizers are often used as performance is maintained under high heat loads and temperature