Flares and Flashes: Proceedings of IAU Colloquium No. 151 Held in Sonneberg, Germany, 5–9 December 1994

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Series: Lecture Notes in Physics 454

ISBN: 3540600574, 9783540600572

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Eric R. Priest (auth.), Jochen Greiner, Hilmar W. Duerbeck, Roald E. Gershberg (eds.)3540600574, 9783540600572

The contributions to the 151st IAU Colloquium cover different fields of recent research, observational as well as theoretical, on solar and stellar flares ranging from radio up to gamma-ray wavelengths. A special chapter is devoted to all-sky monitoring and, finally, the excerpts of a round-table discussion present the reader with an interesting outlook on future developments. This book is therefore a unique source for those who want to get a complete picture of this fascinating part of modern astrophysics.

Table of contents :
Solar flares….Pages 1-13
Flares: The solar-stellar connection….Pages 14-20
Radio emission from flares in single late-type stars….Pages 21-31
High-resolution dynamic spectrum of a spectacular radio burst from AD Leonis….Pages 32-35
VLBI observations of flares in RS CVn binary systems….Pages 36-39
Coherent radio bursts from RS CVn binaries….Pages 40-41
Systematic radio-observations of UX Arietis: Analysis of its variability….Pages 42-43
Radio flares in HR 1099 (V711 Tau)….Pages 44-44
Sunspot proper motion and flare frequency….Pages 45-46
Optical flares: Observations and interpretations….Pages 47-54
The red dwarf star population in the galaxy….Pages 55-56
Kinematics and ages of UV Ceti stars….Pages 57-60
Flare activity among nearby stars….Pages 61-62
Young and old subsystems of flare stars….Pages 63-64
Flare activity and cluster membership probability of flare stars….Pages 65-66
New EUV selected flare stars….Pages 67-68
Flare stars in a field near the North Galactic Pole: ROSAT and optical observations….Pages 69-72
Some results of the coordinated observations of the red dwarf flare star EV Lac in 1986–1994….Pages 73-77
A possible discovery of a flaring 10 12 eV gamma-ray source near the red dwarf EV Lac….Pages 78-79
Short-time flare events of EV Lac….Pages 80-81
Observations of high-frequency activity of EV Lacertae….Pages 82-84
Spectral and photometrical investigation of EV Lac in different states with high time resolution….Pages 85-86
Photoelectric observations of AD Leo: 1989–1994….Pages 87-88
Multifrequency analysis of a UV Ceti flare on 1991 December 31….Pages 89-90
A large amplitude flaring dMe star in the 1978 October 6B γ-ray burst error box….Pages 91-94
A major optical flare on the recently discovered X-ray active dMe star G102-21….Pages 95-96
Flares detected on some late giants: Are they real?….Pages 97-100
BD+47°819, an A-type flare star with peculiar spectrosopic variatons….Pages 101-102
The long-term behaviour of BY Dra….Pages 103-105
CN Com: a typical RS Canum Venaticorum star….Pages 106-107
A long-duration pre-flare dip in the light curve of V1054 Oph….Pages 108-109
Photometric research of pre-flare and extra-flare activity of flare stars….Pages 110-111
Stream parameters in the neighbourhood of the L 1 point in W serpentis-type binaries….Pages 112-114
Monitoring of flare stars at nainital observatory….Pages 115-116
CCD monitoring of flare stars in stellar aggregates….Pages 117-118
Automated search for flare stars continued….Pages 119-120
Flare stars database: Present status….Pages 121-124
Flare star observations with a single-photon counting imaging detector….Pages 125-128
Optical observations on milli-, micro-, and nanosecond timescales….Pages 129-130
MANIA complex — hardware and software for the investigation of optical variability on time scales 10 −7 -10 2 s….Pages 131-132
A new technique for precise stellar photometry: Application to small-scale activity of EV lacertae….Pages 133-134
Flare in late-type stars: UV….Pages 135-145
Post-flare coronal activity on AU Mic detected by EUVE….Pages 146-147
Flares in late-type stars: X-ray….Pages 148-157
Short-duration X-ray transients observed with WATCH on Granat: Are some of them related to stellar flares?….Pages 158-163
ROSAT observation of a giant X-ray flare on the active binary Algol….Pages 164-167
ASCA X-ray spectra of quiescent and flaring emission from AB Doradus….Pages 168-169
X-ray variability of the flare star CC Eri….Pages 170-170
X-ray observations of the dMe star EQ1839.6+8002 in 1980–1993….Pages 171-174
Physical processes during impulsive solar and stellar flares….Pages 175-184
The role of flare stars in cosmic-ray origin….Pages 185-192
Flare activity in Algol-type binaries….Pages 193-194
Influence of coronal mass ejections from the red dwarf component on the accretion pattern in CVs and LMXBs….Pages 195-196
Magnetic field reconnection as a possible source of nonthermal processes in accreting relativistic systems….Pages 197-200
Flares in T Tauri stars….Pages 201-211
Properties of X-ray flares on young stars….Pages 212-215
X-ray flare rate of T Tauri stars in Taurus….Pages 216-217
Middleterm flares in T Tau stars of the Tau — aur complex….Pages 218-220
Activity on T Tauri stars….Pages 221-222
A very active T Tauri star in NGC 7129….Pages 223-226
Polarimetric outbursts in young herbig Ae/Be stars and in peculiar B[e] stars….Pages 227-228
Photometric behaviour of the EXors V1118 Orionis and V1143 Orionis….Pages 229-231
Observations of short-term dips in the Orion variables DD Serpentis and AB Aurigae….Pages 232-233
Hydrogen and helium flashes in cataclysmic variables….Pages 235-244
PU Vul: 15 years of studies, important findings and remaining mysteries….Pages 245-254
Spectral variability and photometric behaviour of the symbiotic nova PU Vul in 1985–1994….Pages 255-259
Photometry of CH Cygni during 1991–1994….Pages 260-261
Long-term photometry of the symbiotic star AG Draconis….Pages 262-263
Space densities of cataclysmic variables and nova recurrence times….Pages 264-267
Extension of the radio spectrum of AE Aqr to the sub-millimetric range….Pages 268-271
The origin of flaring activity in AE Aquarii….Pages 272-275
UBVRI photometry of AE Aquarii in July–August 1994….Pages 276-277
Flares and flickering in the cataclysmic variable AE Aquarii….Pages 278-279
Time dependence of the UV resonance lines in the cataclysmic variable star VW Hyi….Pages 280-281
The benefit of archival research in investigating dwarf novae….Pages 282-284
Do we see magnetic effects in dwarf nova outbursts?….Pages 285-285
Flares in dwarf novae….Pages 286-287
Flickering in cataclysmic variables: Inventory and perspectives….Pages 288-295
Resolved shot noise in the AM Her system V834 Cen….Pages 296-299
Eclipse mapping the flickering in HT Cas….Pages 300-301
Multiple time scales in cataclysmic variables: The examples….Pages 302-305
X-ray bursts….Pages 307-318
Strong X-ray bursts with expansion: Oscillations due to sound waves in atmospheres….Pages 319-320
Quasi-periodic oscillations and noise in accreting black holes and low-magnetic field neutron stars….Pages 321-329
Detection of nonthermal optical flashes with 10 −3 -10 −1 s duration from some LMXBs….Pages 330-333
TTM observations of X1755-338….Pages 334-335
Irregular X-ray variation of LMC X-3….Pages 336-337
Gamma-ray bursts: Observational overview, searches for counterparts, and BACODINE….Pages 339-352
Observations of γ-ray bursts and solar flares with Granat….Pages 353-357
Observations of high-energy gamma-ray bursts with EGRET….Pages 358-362
Population of short γ-ray bursters — result of gravitational lensing of “quiet” γ-ray sources in remote galaxies….Pages 363-366
Multi-wavelength flashes from GRBs….Pages 367-375
Optical transients….Pages 376-380
Simultaneous optical/gamma-ray observations of GRBs….Pages 381-384
ETC observations of the gamma-ray burst GRB 941014….Pages 385-388
Deep search for optical counterparts of gamma-ray bursters….Pages 389-392
CCD sky monitoring and burst alert….Pages 393-394
The plate collection at the Harvard College Observatory….Pages 395-401
Optical sky monitoring: Past and future….Pages 402-406
The Odessa Sky Patrol plate collection….Pages 407-409
Nova Patrol at Abastumani….Pages 410-411
Wide-field plate database: A progress report….Pages 412-415
GCVS problems with flare stars….Pages 416-418
Detections of neutron stars in the extreme ultraviolet….Pages 419-422
Time variability studies with ROSAT….Pages 423-430
Wide-field cameras for GRB observations in X-rays and EUV….Pages 431-434
Wide-field X-ray optics….Pages 435-438
Flares and flashes: The future….Pages 439-450
After dinner address….Pages 451-453
Resolution….Pages 454-454

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