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相关论文: Small-scale Bright Blobs Ejected from a Sunspot Li…

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We investigate a small-scale ($\approx$ 1.5 Mm along the slit), supersonic downflow of about 90 km s$^{-1}$ in the transition region above the light-bridged sunspot umbra in AR 11836. The observations were obtained with the Interface Region…

太阳与恒星天体物理 · 物理学 2015-10-21 Thomas Straus , Bernhard Fleck , Vincenzo Andretta

Small-scale Brightenings (SBs) are commonly observed in the transition region that separates the solar chromosphere from the corona. These brightenings, omnipresent in active region patches known as "moss" regions, could potentially…

We report the simultaneous extreme ultraviolet observation of magnetic reconnection inflow and outflow in a flare on 2010 August 18 observed by the Atmospheric Imaging Assembly on board the {\it Solar Dynamics Observatory}. We found that…

太阳与恒星天体物理 · 物理学 2015-06-03 Shinsuke Takasao , Ayumi Asai , Hiroaki Isobe , Kazunari Shibata

Context. Bright points (BPs) are small-scale, magnetic features ubiquitous across the solar surface. Previously, we have observed and noted their properties for quiet Sun regions. Here, we determine the dynamic properties of BPs using…

太阳与恒星天体物理 · 物理学 2014-07-02 Peter H. Keys , Mihalis Mathioudakis , David B. Jess , Duncan H. Mackay , Francis P. Keenan

By use of the high-resolution spectral data and the broadband imaging obtained with the Goode Solar Telescope at the Big Bear Solar Observatory on 2013 June 6, the spectra of three typical photospheric bright points (PBPs) have been…

太阳与恒星天体物理 · 物理学 2020-07-21 Q. Hao , C. Fang , M. D. Ding , Z. Li , W. Cao

We report findings from 0.2" resolution observations of the 2007 October 03 quiescent prominence observed with the Solar Optical Telescope on the Hinode satellite. The observations show clear ejections from the top of the quiescent…

太阳与恒星天体物理 · 物理学 2015-05-27 Andrew Hillier , Hiroaki Isobe , Hiroko Watanabe

Solar observations in the mid-infrared 8-14 \mu\m band continuum were carried out with cadence of 5 frames per second, in December 2007. Rapid small heated sources, with typical duration of the order of seconds, were found on the bright…

Bright points (BPs) in the solar photosphere are radiative signatures of magnetic elements described by slender flux tubes located in the darker intergranular lanes. They contribute to the ultraviolet (UV) flux variations over the solar…

High cadence, multi-wavelength observations and simulations are employed for the analysis of solar photospheric magnetic bright points (MBPs) in the quiet Sun. The observations were obtained with the Rapid Oscillations in the Solar…

太阳与恒星天体物理 · 物理学 2015-06-11 P. H. Keys , M. Mathioudakis , D. B. Jess , S. Shelyag , D. J. Christian , F. P. Keenan

We employ high resolution filtergrams and polarimetric measurements from Hinode to follow the evolution of a sunspot for eight days starting on June 28, 2007. The imaging data were corrected for intensity gradients, projection effects, and…

太阳与恒星天体物理 · 物理学 2015-06-05 Rohan E. Louis , B. Ravindra , Shibu K. Mathew , Luis R. Bellot Rubio , A. Raja Bayanna , P. Venkatakrishnan

We used spectropolarimetric observations of a sunspot in active region NOAA 11809 in the Ca ii line at 854.2 nm taken with the SpectroPolarimeter for Optical and Infrared Regions (SPINOR) at the Dunn Solar Telescope to infer thermodynamic…

太阳与恒星天体物理 · 物理学 2018-04-23 Debi Prasad Choudhary , Christian Beck

High resolution G-band images of the interior of a supergranulation cell show ubiquitous Bright Points (some 0.3 BPs per Mm^2). They are located in intergranular lanes and often form chains of elongated blobs whose smallest dimension is at…

天体物理学 · 物理学 2009-11-10 J. Sanchez Almeida , I. Marquez , J. A. Bonet , I. Dominguez Cerdena , R. Muller

There are relatively few observations of UV emission during the impulsive phases of solar flares, so the nature of that emission is poorly known. Photons produced by solar flares can resonantly scatter off atoms and ions in the corona.…

太阳与恒星天体物理 · 物理学 2015-05-28 H. Johnson , J. C. Raymond , N. A. Murphy , S. Giordano , Y. -K. Ko , A. Ciaravella , R. Suleiman

We examine Suzaku, XMM-Newton, and Chandra observations of the Abell 2029/2033 system to investigate the nature of a bridge of X-ray emission joining the two galaxy clusters. By modelling the contributions from the outskirts of the two…

宇宙学与河外天体物理 · 物理学 2021-10-27 M. S. Mirakhor , S. A. Walker , J. Runge

The Magellanic System includes some of the nearest examples of galaxies disturbed by galaxy interactions. These interactions have redistributed much of their gas into the halos of the Milky Way and the Magellanic Clouds. We present…

星系天体物理 · 物理学 2013-07-09 K. A. Barger , L. M. Haffner , J. Bland-Hawthorn

We have imaged the extremely high-velocity outflowing gas in CO (2-1) and (3-2) associated with the shell-like ultracompact HII region G5.89-0.39 at a resolution of ~3" (corresponding to ~4000 AU) with the Submillimeter Array. The…

太阳与恒星天体物理 · 物理学 2015-06-03 Yu-Nung Su , Sheng-Yuan Liu , Huei-Ru Chen , Ya-Wen Tang

We propose a new model for the extended Ly alpha blobs found recently at high redshift z ~ 3. The observational properties of these blobs are; 1) the observed Ly alpha luminosities are ~ 10^{43} h^{-2} ergs s^{-1}, 2) they appear elongated…

天体物理学 · 物理学 2009-10-31 Yoshiaki Taniguchi , Yasuhiro Shioya

Context: Lyman $\alpha$ blobs (LABs) are large-scale radio-quiet Lyman $\alpha$ (Ly$\alpha$) nebula at high-$z$ that occur predominantly in overdense proto-cluster regions. Especially the prototypical SSA22a-LAB1 at $z=3.1$ has become an…

星系天体物理 · 物理学 2020-10-07 Edmund Christian Herenz , Matthew Hayes , Claudia Scarlata

A light bridge is a magnetic intrusion into a sunspot, it interacts with the main magnetic field and excites a variety of dynamical processes. In the letter, we studied magnetic connectivity between a light bridge and coronal loops rooted…

太阳与恒星天体物理 · 物理学 2021-07-21 Yuhu Miao , Libo Fu , Xian Du , Ding Yuan , Chaowei Jiang , Jiangtao Su , Mingyu Zhao , Sergey Anfinogentov

The baryons inside high-redshift halos with virial temperatures above T=10^4 K cool radiatively as they condense inside dark matter potential wells. We show that the release of the gravitational binding energy, over the halo assembly…

天体物理学 · 物理学 2009-10-31 Zoltan Haiman , Marco Spaans , Eliot Quataert