Results 21 to 30 of about 2,328,776 (249)

A catalogue of white-light flares observed by Yohkoh [PDF]

, 2003
The aspect camera of the Soft X-ray Telescope (SXT) on Yohkoh provided the first systematic survey of white-light flares from an observatory in space. The observations were made in the Fraunhofer g-band at a pixel size of 2.46 arcsec and a typical sample
H. S. Hudson, N. V. Nitta, van Driel-Gesztelyi, L, Matthews, SA, L. van Driel-Gesztelyi, Hudson, HS, Nitta, NV, S. A. Matthews   +7 more
core   +1 more source

Images of solar flares in HMI continuum

, 2021
This dataset contains solar flares in classes B, C, M, and X at HMI Continuum. The images were obtained from the Solar Dynamics Observatory by the Atmospheric Imaging Assembly instrument.
Gradvohl, André Leon Sampaio, Lima, Ana Luísa Fogarin de Sousa, Liu, Jianna   +2 more
core   +1 more source

Infrared/optical-X-ray simultaneous observations of X-ray flares in GRB 071112C and GRB 080506 [PDF]

, 2010
Aims. We investigate the origin of short X-ray flares which are occasionally observed in early stages of afterglows of gamma-ray bursts (GRBs). Methods.
Arai, Akira, Uemura, Makoto, Fukazawa, Yasushi, Takahashi, Hiromitsu, R. Yamazaki, Sasada, Mahito, Kawabata, Koji S, M. Kino, M. Ohno, Mizuno, Tsunefumi, T. Yamashita, S. Sato, G. Sato, T. Uehara, M. Uemura, T. Mizuno, Ohsugi, Takashi, Sato, Shuji, Yamazaki, Ryo, Sato, Goro, T. Ohsugi, Y. Fukazawa, H. Takahashi, Yamashita, Takuya, H. Katagiri, Kino, Masaru, M. Sasada, A. Arai, Katagiri, Hideaki, Ohno, Masanori, K. S. Kawabata, Uehara, Takeshi   +31 more
core   +1 more source

Images of solar flares in 1700 Angstrom wavelength

, 2021
This dataset contains solar flares in classes B, C, M, and X at 1700 Angstrom (Å) wavelength. The images were obtained from the Solar Dynamics Observatory by the Atmospheric Imaging Assembly instrument.
Gradvohl, André Leon Sampaio, Lima, Ana Luísa Fogarin de Sousa, Liu, Jianna   +2 more
core   +1 more source

A Search for Optical Flares in Chromospherically Active Stars [PDF]

, 1996
We have surveyed four years of archival UBV photometry of 69 chromospherically active stars obtained with the Phoenix-10 automatic photoelectric telescope in search of optical flares on these stars.
Henry, Gregory W., Newsom, M. S.
core   +1 more source

Statistical Signatures of Nanoflare Activity. III. Evidence of Enhanced Nanoflaring Rates in Fully Convective stars as Observed by the NGTS

The Astrophysical Journal, 2023
Previous examinations of fully convective M-dwarf stars have highlighted enhanced rates of nanoflare activity on these distant stellar sources. However, the specific role the convective boundary, which is believed to be present for spectral types earlier
S. D. T. Grant, D. B. Jess, C. J. Dillon, M. Mathioudakis, C. A. Watson, J. A. G. Jackman, D. G. Jackson, P. J. Wheatley, M. R. Goad, S. L. Casewell, D. R. Anderson, M. R. Burleigh, R. G. West, J. I. Vines   +13 more
doaj   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]

, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll, Bischl, Hermann, Markus Knapek, Giggenbach, Dirk, Joachim Horwath, Horwath, Joachim, Courville, Nicolas, Knapek, Markus, Bernd Epple, Moll, Florian, Nicolas Courville, Hermann Bischl, Epple, Bernhard, Dirk Giggenbach   +13 more
core   +1 more source

Multiwavelength Observations of 6 BL Lac Objects in 2008-2012

EPJ Web of Conferences, 2013
We present results of 4 years of VLBA monitoring along with γ-ray and optical R-band photometric observations of 6 BL Lac objects (3C 66A, S5 0716+71, PKS 0735+17, S4 0954+68, W Com, and OT 081).
Morozova D.A., Jorstad S.G., Marscher A.P., Larionov V.M., Troitskiy I.S., Blinov D.A., Agudo I., Smith P.S.   +7 more
doaj   +1 more source

Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]

, 2006
A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus, Markus Knapek, Martin Brechtelsbauer, Joachim Horwath, Horwath, Joachim, Wilkerson, Brandon, Brandon Wilkerson, Brechtelsbauer, Martin, Bernhard Epple, Epple, Bernhard   +9 more
core   +1 more source

A 7 Day Multiwavelength Flare Campaign on AU Mic. I. High-time-resolution Light Curves and the Thermal Empirical Neupert Effect

The Astrophysical Journal, 2023
We present light curves and flares from a 7 day, multiwavelength observational campaign of AU Mic, a young and active dM1e star with exoplanets and a debris disk. We report on 73 unique flares between the X-ray to optical data.
Isaiah I. Tristan, Yuta Notsu, Adam F. Kowalski, Alexander Brown, John P. Wisniewski, Rachel A. Osten, Eliot H. Vrijmoet, Graeme L. White, Brad D. Carter, Carol A. Grady, Todd J. Henry, Rodrigo H. Hinojosa, Jamie R. Lomax, James E. Neff, Leonardo A. Paredes, Jack Soutter   +15 more
doaj   +1 more source