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Vertical propagation of acoustic waves in the solar internetworkas observed by IRIS

Srivastava, A. K.; Murawski, K.; Dwivedi, B. N. +2 more

We investigate the Interface Region Imaging Spectrograph (IRIS) observations of the quiet-Sun (QS) to understand the propagation of acoustic waves in transition region (TR) from photosphere. We selected a few IRIS spectral lines, which include the photospheric (Mn I 2801.25 Å), chromospheric (Mg II k 2796.35 Å), and TR (C II 1334.53 Å), to investi…

Spectroscopic and imaging observations of small-scale reconnection events

Li, Dong; Li, Leping; Ning, Zongjun

We present spectroscopic and imaging observations of small-scale reconnection events on the Sun. Using Interface Region Imaging Spectrograph (IRIS) observations, one reconnection event is first detected as IRIS jets with fast bidirectional velocities in the chromosphere and transition region, which are identified as non-Gaussian broadenings with t…

Synchronized observations of bright points from the solar photosphere to the corona

Tavabi, Ehsan

One of the most important features in the solar atmosphere is the magnetic network and its relationship to the transition region (TR) and coronal brightness. It is important to understand how energy is transported into the corona and how it travels along the magnetic field lines between the deep photosphere and chromosphere through the TR and coro…