The solar chromosphere at high resolution with IBIS

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The solar chromosphere at high resolution with IBIS II. Acoustic shocks in the quiet internetwork and the role of magnetic fields

Context. The exact nature of the quiet solar chromosphere, and especially its temporal variations, are still subject of intense debate. One of the contentious issues is the possible role of magnetic field in structuring the quieter solar regions. Aims. We characterize the dynamics of the quiet inter-network chromosphere by studying the occurrence of acoustic shocks and their relation with the c...

متن کامل

Exploration of Solar Chromosphere Using High Resolution Spectroscopic Observations

Brazilian Solar Spectroscope (BSS), operating in the frequency range of (1000 − 2500) MHz with high time and frequency resolutions, has observed various fine structures showing intensity variations as functions of time and frequency. Here we are reporting radio bursts observed by BSS, from August to October/2001, exhibiting fine structures with total duration of the order of 300 ms, covering a ...

متن کامل

Modeling the Solar Chromosphere

Spectral diagnostic features formed in the solar chromosphere are few and difficult to interpret — they are neither formed in the optically thin regime nor in local thermodynamic equilibrium (LTE). To probe the state of the chromosphere, both from observations and theory, it is therefore necessary with modeling. I discuss both traditional semi-empirical modeling, numerical experiments illustrat...

متن کامل

The prolate solar chromosphere

We present a comparative analysis of the chromospheric solar limb prolateness, using strictly simultaneous Hα ground-based observations and HeII space-based observations. The typical prolateness is found to be ∆D/D = 5.5 × 10−3 in HeII and 1.2 × 10−3 in Hα. The first measurements in the 30.4 nm HeII line over a period of two years, as well as coronal data, are discussed to explore further the o...

متن کامل

High-resolution Imaging of the Upper Solar Chromosphere: First Light Performance of the Very-high-resolution Advanced Ultraviolet Telescope

The Very-high-resolution Advanced ULtraviolet Telescope (VAULT) experiment was successfully launched on 7 May 1999 on a Black Brant sounding rocket vehicle from White Sands Missile Range. The instrument consists of a 30 cm UV diffraction limited telescope followed by a two-grating, zero-dispersion spectroheliograph tuned to isolate the solar Lα emission line. During the flight, the instrument s...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Astronomy & Astrophysics

سال: 2008

ISSN: 0004-6361,1432-0746

DOI: 10.1051/0004-6361:20078642