2016ApJ...833..206T

Query : 2016ApJ...833..206T

2016ApJ...833..206T - Astrophys. J., 833, 206-206 (2016/December-3)

Very long-period pulsations before the onset of solar flares.

TAN B., YU Z., HUANG J., TAN C. and ZHANG Y.

Abstract (from CDS):

Solar flares are the most powerful explosions occurring in the solar system, which may lead to disastrous space weather events and impact various aspects of our Earth. It remains a big challenge in modern astrophysics to understand the origin of solar flares and predict their onset. Based on the analysis of soft X-ray emission observed by the Geostationary Operational Environmental Satellite, this work reports a new discovery of very long-periodic pulsations occurring in the preflare phase before the onset of solar flares (preflare-VLPs). These pulsations typically have periods of 8-30 min and last for about 1-2 hr. They are possibly generated from LRC oscillations of plasma loops where electric current dominates the physical process during magnetic energy accumulation in the source region. Preflare-VLPs provide essential information for understanding the triggering mechanism and origin of solar flares, and may be a convenient precursory indicator to help us respond to solar explosions and the corresponding disastrous space weather events.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): plasmas - stars: coronae - Sun: atmosphere - Sun: corona - Sun: corona

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 3C 228 QSO 09 50 10.793 +14 20 00.70   21       ~ 180 2

Query : 2016ApJ...833..206T

Basic data :
3C 228 -- Quasar
Other object types: otypes_help 		Rad (3C,BWE,...), QSO (2014A&A), G (2023ApJS,[MMD97]), Opt (DELS,SDSS), rG (2020ApJS), AGN ([HB91]), X (2CXO), MIR (WISEA)
ICRS coord. (ep=J2000) : 		09 50 10.793 +14 20 00.70 (Optical) [ 33 32 90 ] C 2012ApJS..203...21A
FK4 coord. (ep=B1950 eq=1950) : 		09 47 27.724 +14 34 03.11 [ 33 32 90 ]
Gal coord. (ep=J2000) : 		220.403623 +45.993140 [ 33 32 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 123862 [0] / z(spectroscopic) 0.5518 [0.0000] / cz 165425 [0]
   (Opt) C 2014A&A...563A..54P
Fluxes (6) :
B 21 [~] E ~
u (AB) 22.3679 [0.1902] D 2020ApJS..250....8L
g (AB) 21.242 [0.064] C 2020ApJS..249....3A
r (AB) 20.576 [0.042] C 2020ApJS..249....3A
i (AB) 19.779 [0.029] C 2020ApJS..249....3A
z (AB) 20.3304 [0.1252] D 2020ApJS..250....8L
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Identifiers (38) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

3C 228 GB6 B0947+1434 NVSS J095010+141957 UT 0947+145
BWE 0947+1434 87GB 094727.5+143409 OHIO A 274 VLSSr J095010.6+141959
3C 228.0 GLEAM J095010+142000 PKS J0950+1419 VLSS J0950.1+1419
4C 14.34 1Jy 0947+145 PKS 0947+14 WB 0947+1434
3CR 228 1Jy 0947+14 PKS 0947+145 WISEA J095010.79+142000.7
Cul 0947+145 MITG J095011+1419 S3 0947+14 [GW2008] CoNFIG 59
2CXO J095010.7+142000 MRC 0947+145 SDSS J095010.79+142000.7 [HB91] 0947+145
DA 274 NAICGB 0947+145 SDSS J095010.79+142000.6 [MMD97] 094727.84+143405.1
DB 71 NAIC 0947+145 TGSSADR J095010.7+141958
DELS 8000412268003208 NRAO 337 TXS 0947+145

References (180 between 1850 and 2026) (Total 180)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 10   

   

Observing logs
Herschel : 3   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : 3C 228

Link by name to the catalogue in VizieR :

3C 228 BWE 0947+1434 3C 228.0 4C 14.34 3CR 228
MITG J095011+1419 NVSS J095010+141957 PKS J0950+1419 PKS 0947+14 PKS 0947+145
SDSS J095010.79+142000.7 SDSS J095010.79+142000.6 WISEA J095010.79+142000.7

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