activity
20082019
most citedHelioseismology of Sunspots: A Case Study of NOAA Region 9787

110 citations · 563 across the 13 of their papers we have counts for

collaborators

13 papers

astro-ph.SR2019★ 14 cited

The Chromospheric Response to the Sunquake generated by the X9.3 Flare of NOAA 12673

Sean Quinn, Aaron Reid, Mihalis Mathioudakis +3

Active region NOAA 12673 was extremely volatile in 2017 September, producing many solar flares, including the largest of solar cycle 24, an X9.3 flare of 06 September 2017. It has…

astro-ph.SR2015★ 33 cited

Spectroscopic Signatures Related to a Sunquake

Sarah A. Matthews, Louise K. Harra, Sergei Zharkov +1

The presence of flare related acoustic emission (sunquakes) in some flares represents a severe challenge to our current understanding of flare energy transport processes. We presen…

astro-ph.SR2013★ 10 cited

On the Seismicity of September 7, 2011 X1.8-class Flare

S. Zharkov, L. M. Green, S. A. Matthews +1

We present results of our preliminary analysis of acoustically active X-class flare of September 7, 2011. We report two acoustic sources detected via acoustic holography and verifi…

astro-ph.SR2013★ 7 cited

Geometric properties of acoustic waves generated by a point source in solar-like interior: effects of acoustic cut-off frequency

S. Zharkov

Acoustic waves generated by a point source in stratified plasma are considered in this paper. Analytical parametric solution for monochromatic source is derived for plane-parallel…

astro-ph.SR2012★ 31 cited

Properties of the 15 February 2011 Flare Seismic Sources

S. Zharkov, L. M. Green, S. A. Matthews +1

The first near-side X-class flare of the Solar Cycle 24 occurred in February 2011 and produced a very strong seismic response in the photosphere. One sunquake was reported by Kosov…

astro-ph.SR2011★ 64 cited

February 15, 2011: sun-quakes produced by flux rope eruption

S. Zharkov, L. M. Green, S. A. Matthews +1

We present an analysis of the 15 February 2011 X-class solar flare, previously reported to produce the first sunquake in solar cycle 24 (Kosovichev 2011). Using acoustic holography…