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Two components of the coronal emission revealed by EUV spectroscopic observations
Hui Tian, Scott W. McIntosh, Bart De Pontieu +3
Recent spectroscopic observations have revealed the ubiquitous presence of blueward asymmetries of emission lines formed in the solar corona and transition region. These asymmetrie…
The Spectroscopic Signature of Quasi-periodic Upflows in Active Region Timeseries
Hui Tian, Scott W. McIntosh, Bart De Pontieu
Quasi-periodic propagating disturbances are frequently observed in coronal intensity image sequences. These disturbances have historically been interpreted as being the signature o…
Estimating the Chromospheric Absorption of Transition Region Moss Emission
Bart De Pontieu, Viggo H. Hansteen, Scott W. McIntosh +1
Many models for coronal loops have difficulty explaining the observed EUV brightness of the transition region, which is often significantly less than theoretical models predict. Th…
Observing the Roots of Solar Coronal Heating - in the Chromosphere
Bart De Pontieu, Scott W. McIntosh, Viggo H. Hansteen +1
The Sun's corona is millions of degrees hotter than its 5,000 K photosphere. This heating enigma is typically addressed by invoking the deposition at coronal heights of non-thermal…