Heating in the Lower Atmosphere and the Continuum Emission of Solar White‐Light Flares

1999 ◽  
Vol 512 (1) ◽  
pp. 454-457 ◽  
Author(s):  
M. D. Ding ◽  
C. Fang ◽  
H. S. Yun
Keyword(s):  
White Light ◽  
Lower Atmosphere ◽  
Continuum Emission ◽  
The Continuum

scholarly journals White-light continuum emission from a solar flare and plage

2015 ◽  
Vol 11 (S320) ◽  
pp. 268-277
Author(s):  
Arkadiusz Berlicki ◽  
Arun Kumar Awasthi ◽  
Petr Heinzel ◽  
Michal Sobotka
Keyword(s):  
Active Region ◽  
Solar Flare ◽  
White Light ◽  
Temporal Evolution ◽  
Continuum Emission ◽  
White Light Continuum ◽  
Multi Wavelength ◽  
Optical Continuum ◽  
The Continuum ◽  
Morphological Correlation

AbstractObservations of flare emissions in the optical continuum are very rare. Therefore, the analysis of such observations is useful and may contribute to our understanding of the flaring chromosphere and photosphere. We study the white light continuum emission observed during the X6.9 flare. This emission comes not only from the flare ribbons but also form the nearby plage area. The main aim of this work is to disentangle the flare and plage (facula) emission. We analyzed the spatial, spectral and temporal evolution of the flare and plage properties by analyzing multi-wavelength observations. We study the morphological correlation of the white-light continuum emission observed with different instruments. We found that some active region areas which produce the continuum emission correspond rather to plages than to the flare kernels. We showed that in some cases the continuum emission from the WL flare kernels is very similar to the continuum emission of faculae.

The role of chromospheric condensations in the continuum emission of white-light flares

1992 ◽  
Vol 397 ◽  
pp. 694 ◽  
Author(s):  
W. Q. Gan ◽  
E. Rieger ◽  
H. Q. Zhang ◽  
C. Fang
Keyword(s):  
White Light ◽  
Continuum Emission ◽  
The Continuum

RADIATIVE HYDRODYNAMIC SIMULATION OF THE CONTINUUM EMISSION IN SOLAR WHITE-LIGHT FLARES

2010 ◽  
Vol 711 (1) ◽  
pp. 185-191 ◽  
Author(s):  
J. X. Cheng ◽  
M. D. Ding ◽  
Mats Carlsson
Keyword(s):  
White Light ◽  
Continuum Emission ◽  
Hydrodynamic Simulation ◽  
The Continuum

scholarly journals Footpoint Motion of the Continuum Emission in the 2002 September 30 White‐Light Flare

2006 ◽  
Vol 641 (2) ◽  
pp. 1217-1221 ◽  
Author(s):  
Q. R. Chen ◽  
M. D. Ding
Keyword(s):  
White Light ◽  
Continuum Emission ◽  
The Continuum

scholarly journals Aperture synthesis CS and 98 GHz continuum observations of protostellar IRAS sources in Taurus

1991 ◽  
Vol 147 ◽  
pp. 353-356
Author(s):  
N. Ohashi ◽  
R. Kawabe ◽  
M. Hayashi ◽  
M. Ishiguro
Keyword(s):  
Molecular Cloud ◽  
Total Mass ◽  
T Tauri Stars ◽  
Continuum Emission ◽  
Beam Size ◽  
Dust Grains ◽  
Dynamical Mass ◽  
T Tauri ◽  
Cloud Cores ◽  
The Continuum

The CS (J = 2 — 1) line and 98 GHz continuum emission have been observed for 11 protostellar IRAS sources in the Taurus molecular cloud with resolutions of 2.6″−8.8″ (360 AU—1200 AU) using the Nobeyama Millimeter Array (NMA). The CS emission is detected only toward embedded sources, while the continuum emission from dust grains is detected only toward visible T Tauri stars except for one embedded source, L1551-IRS5. This suggests that the dust grains around the embedded sources do not centrally concentrate enough to be detected with our sensitivity (∼4 m Jy r.m.s), while dust grains in disks around the T Tauri stars have enough total mass to be detected with the NMA. The molecular cloud cores around the embedded sources are moderately extended and dense enough to be detected in CS, while gas disks around the T Tauri are not detected because the radius of such gas disks may be smaller than 70 (50 K/Tex) AU. These results imply that the total amount of matter within the NMA beam size must increase when the central objects evolve into T Tauri stars from embedded sources, suggesting that the compact and highly dense disks around T Tauri stars are formed by the dynamical mass accretion during the embedded protostar phase.

scholarly journals Water maser and radio continuum emission towards IRAS 23139+5939

2007 ◽  
Vol 3 (S242) ◽  
pp. 180-181
Author(s):  
M. A. Trinidad ◽  
S. Curiel ◽  
J. M. Torrelles ◽  
L. F. Rodríguez ◽  
V. Migenes ◽  
...  
Keyword(s):  
Flux Density ◽  
Line Emission ◽  
The Other ◽  
Radio Continuum ◽  
High Mass ◽  
Continuum Emission ◽  
Maser Line ◽  
Water Masers ◽  
Water Maser ◽  
The Continuum

AbstractWe present simultaneous observations of continuum (3.5 and 1.3cm) and water maser line emission (1.3cm) carried out with the VLA-A toward the high-mass object IRAS 23139+5939. We detected two radio continuum sources at 3.5cm separated by 0”5 (~2400 AU), I23139 and I23139S. Based on the observed continuum flux density and the spectral index, we suggest that I23139 is a thermal radio jet associated with a high-mass YSO. On the other hand, based on the spatio-kinematical distribution of the water masers, together with the continuum emission information, we speculate that I23139S is also a jet source powering some of the masers detected in the region.

scholarly journals Correlated modulation between the redshifted Fe Kαline and the continuum emission in NGC 3783

2007 ◽  
Vol 467 (3) ◽  
pp. 1057-1063 ◽  
Author(s):  
F. Tombesi ◽  
B. De Marco ◽  
K. Iwasawa ◽  
M. Cappi ◽  
M. Dadina ◽  
...  
Keyword(s):  
Continuum Emission ◽  
The Continuum

scholarly journals Planet formation in action: resolved gas and dust images of a transitional disk and its cavity

2013 ◽  
Vol 8 (S299) ◽  
pp. 90-93
Author(s):  
Nienke van der Marel ◽  
Ewine F. van Dishoeck ◽  
Simon Bruderer ◽  
Til Birnstiel ◽  
Paola Pinilla ◽  
...  
Keyword(s):  
Planet Formation ◽  
Early Stage ◽  
Continuum Emission ◽  
Dust Trapping ◽  
Spatially Resolved ◽  
First Results ◽  
Disk Evolution ◽  
Gas Cavity ◽  
Dust Distribution ◽  
The Continuum

AbstractPlanet formation and clearing of protoplanetary disks is one of the long standing problems in disk evolution theory. The best test of clearing scenarios is observing systems that are most likely to be actively forming planets: the transitional disks with large inner dust cavities. We present the first results of our ALMA (Atacama Large Millimeter/submillimeter Array) Cycle 0 program using Band 9, imaging the Herbig Ae star Oph IRS 48 in CO 6−5 and the submillimeter continuum in the extended configuration. The resulting ~0.2″ spatial resolution completely resolves the cavity of this disk in the gas and the dust. The gas cavity of IRS 48 is half as large as the dust cavity, ruling out grain growth and photoevaporation as the primary cause of the truncation. On the other hand, the continuum emission reveals an unexpected large azimuthal asymmetry and steep edges in the dust distribution along the ring, suggestive of dust trapping. We will discuss the implications of the combined gas and dust distribution for planet formation at a very early stage. This is one of the first transition disks with spatially resolved gas inside the cavity, demonstrating the superb capabilities of the Band 9 receivers.

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