Category: Nuggets

UKSP Nuggets

New UKSP Nugget #124

124. The independence of kink oscillation periods on noise

Periods of decayless kink oscillations of coronal loops are practically unaffected by noise.

https://www.uksolphys.org/uksp-nugget/independenceofkinkoscillationperiodsofnoise/

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UKSP Nuggets are published on a monthly basis highlighting solar physics research led from the UK.

https://www.uksolphys.org/uksp-nuggets/

Peter Wyper and Rahul Sharma

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~… continue to the full article

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RHESSI Science Nuggets in October 2022

No. 438, “Effects of Coronal Structures on the Dynamics of the Global Coronal Wave of SOL2017-09-10‎,” by Huidong HU et al.: The amazing global coronal wave of SOL2017-09-10 wrapped around the whole Sun, and displayed transmission and reflection at both polar coronal holes.

No. 439, “A Significant Sudden Ionospheric Disturbance Associated with a Massive Gamma-ray Burst”, by Laura HAYES and Peter GALLAGHER: A first SID observed in broad daylight, from a source far far away.

We welcome contributions to the RHESSI Nuggets, and the topics may wander some distance away from specifically RHESSI results if they are generally interesting. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets for these and others. Comments about specific flares can often be found by searching for their SOLyyyy-mm-dd identifier from this home page.… continue to the full article

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RHESSI Nuggets in September 2022

No. 437, “KW-Sun: The Konus-Wind Solar Flare Database in Hard X-Ray and Soft Gamma-Ray Ranges,” by Alexandra LYSENKO: An unrivaled hard X-ray and gamma-ray database is entering its third activity maximum.

No. 436, “First Detection of Kink Oscillations with Solar Orbiter,” by Sihui ZHONG et al.: SolO sees coronal oscillations as well as AIA can, and even better.

No. 435, “Energetic Neutral Hydrogen from Large Solar Flares,” by Glenn MASON: A rediscovered data treasury reveals the occurrence of many flare/CME events producing solar high-energy neutral atoms.

We welcome contributions to the RHESSI Nuggets, and the topics may wander some distance away from specifically RHESSI results if they are generally interesting. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets for these and others. Comments about specific flares can often be found by searching for their SOLyyyy-mm-dd identifier from this home page.… continue to the full article

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RHESSI Nuggets in July 2022

No. 432, “Undetected Minority-polarity Flux, Moss, and Coronal Heating,” by Yi-Ming WANG. There’s plenty of room in “unipolar” active regions for both polarities, and there is good evidence for them.

No. 433, “Fast Prograde Flows in Solar Active Regions,” by Hugh HUDSON. Unexpected, unpredicted, and not modeled yet – weird flows in hot active-region loops.

We welcome contributions to the RHESSI Nuggets, and the topics may wander some distance away from specifically RHESSI results if they are generally interesting. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets for these and others. Comments about specific flares can often be found by searching for their SOLyyyy-mm-dd identifier from this home page.… continue to the full article

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Four new RHESSI Science Nuggets

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets

No. 428, “Solar Hard X-rays with Insight,” by Wei WANG and Ping ZHANG. A spectacular limb flare introduces Insight/HXMT, a new high-energy observational resource.

No. 429, “Carl Størmer,” by Hugh HUDSON and Lyndsay FLETCHER. Størmer and the theory of particle trapping in magnetic loops.

No. 430, “Sun-as-a-star spectroscopic observations of the line-of-sight velocity of the solar eruption SOL2021-10-28T15:35,” by Yu XU and Hui TIAN. The observation of the full 3D velocity of a CME, for a RHESSI anniversary event.

No. 431, “Thermal/non-thermal with MinXSS and RHESSI,” by Shunsaku NAGASAWA. Time-domain studies of improved X-ray spectra reveal a “super-hot” component.

We welcome contributions to the RHESSI Nuggets, and the topics may wander some distance away from specifically RHESSI results if they are generally interesting. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets for these and others. Comments about specific flares can often be found by searching for their SOLyyyy-mm-dd identifier from this home page.… continue to the full article

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New UKSP Nugget #123

123. Transverse Oscillations of Spicules and Estimating Their Energy Flux
by William Bate (QUB)

High cadence observations show a possible contribution to atmospheric heating.

https://www.uksolphys.org/?p=20701

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UKSP Nuggets are published on a monthly basis highlighting solar physics research led from the UK.

https://www.uksolphys.org/uksp-nuggets/

Iain Hannah and Lyndsay Fletcher

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~… continue to the full article

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Solar radio science nuggets

Two recent solar radio science nuggets are available online:

Langmuir-Slow Extraordinary Mode Magnetic Signature Observations with Parker Solar Probe
by A. Larosa et al
https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3267

LOFAR size and shape measurements of solar metric radio burst sources
by Gordovskyy et al
https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3260

——
CESRA Highlights of Solar Radio Physics, aka CESRA Nuggets, are short
communications written in language accessible to a non-expert in the
specific area and designed to keep solar and heliophysics communities
informed and up-to-date about current research. The highlights can be
followed, discussed, commented and shared via
http://www.facebook.com/solarcesra/
and
http://twitter.com/CESRA_community.… continue to the full article

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New UKSP Nugget #122

122. Direct evidence that twisted flux tube emergence creates solar active regions
by David MacTaggart (Glasgow), Chris Prior, Breno Raphaldini (Durham), and Paolo Romano, Salvo Guglielmino (INAF Catania)

A new way of measuring twist is applied to magnetic flux emergence.

https://www.uksolphys.org/?p=20314

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UKSP Nuggets are published on a monthly basis highlighting solar physics research led from the UK.

https://www.uksolphys.org/uksp-nuggets/

Iain Hannah and Lyndsay Fletcher

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~… continue to the full article

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Solar radio science nuggets in March 2022

Spectral Analysis of Solar Radio Type III Bursts from 20 kHz to 410 MHz
by K. Sasikumar Raja et al.*
https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3221

New results from the spectral observations of solar coronal type II
radio bursts
by R. Ramesh et al.*
https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3231

CESRA Highlights of Solar Radio Physics, aka CESRA Nuggets, are short
communications written in language accessible to a non-expert in the
specific area and designed to keep solar and heliophysics communities
informed and up-to-date about current research. The highlights can be
followed, discussed, commented and shared via
http://www.facebook.com/solarcesra/
and
http://twitter.com/CESRA_community.

http://cesra.netcontinue to the full article

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New UKSP Nugget #121

121. Quasi-periodic problems; what’s going on with QPPs?
by Tishtrya Mehta (Warwick)

Clues to the origins of the flare QPP phenomenon from observations of an increasing pulsation period.

https://www.uksolphys.org/?p=20124

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

UKSP Nuggets are published on a monthly basis highlighting solar physics research led from the UK.

https://www.uksolphys.org/uksp-nuggets/

Iain Hannah and Lyndsay Fletcher

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~… continue to the full article

Read more