UK Solar Physics » Nuggets

New EIS nugget

Lucie Green — Tue, 31 Jan 2012 08:46:21 +0000

We are pleased to announce the release of a new EIS nugget by Jian Sun. This month we celebrate one year of the EIS flare catalogue and the dataset that EIS is collecting.

Please visit the nugget here:
http://msslxr.mssl.ucl.ac.uk:8080/SolarB/nuggets/nugget_2012feb.jsp

We welcome nugget contributions from the community.… continue to the full article

Announcing RHESSI Nugget No 168

Hugh Hudson — Mon, 23 Jan 2012 20:41:46 +0000

A re-interpretation of the famous SAD tadpoles: see
http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Supra-Arcade_Downflows
(by Sabrina Savage and David McKenzie)

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Supra-Arcade_Downflows… continue to the full article

A new UKSP Nugget – 19. Quasi-biennial variations in helioseismic frequencies

Iain Hannah — Mon, 23 Jan 2012 20:40:59 +0000

19. Quasi-biennial variations in helioseismic frequencies
by Anne-Marie Broomhall, W.J. Chaplin, Y. Elsworth,
University of Birmingham

BiSON data hints at mysterious goings on in the solar interior during the recent, unusual solar minimum.

http://www.uksolphys.org/?p=3666

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UKSP Nuggets are published on a monthly basis highlighting solar physics research in the UK.

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

Iain Hannah and Lyndsay Fletcher

http://www.uksolphys.org/?p=3666

New RHESSI Science Nugget (No. 167)

Hugh Hudson — Mon, 16 Jan 2012 21:07:05 +0000

The flare EUV continua can now routinely be observed by SDO/EVE.
This Nugget evaluates their energy content for the first X-class flare of Cycle 24, SOL2011-02-15.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Flare_Observations_of_the_EUV_Continua… continue to the full article

New EIS science nugget

Lucie Green — Sun, 15 Jan 2012 19:37:08 +0000

We are pleased to announce the release of a new EIS science nugget on a study into plasma outflows as a spectroscopic precursor to a CME. The nugget is by Deb Baker (MSSL-UCL).

To view the nugget please visit the webpage:

http://msslxr.mssl.ucl.ac.uk:8080/SolarB/nuggets/nugget_2012jan.jsp… continue to the full article

Announcing RHESSI Science Nugget No. 166

Hugh Hudson — Tue, 20 Dec 2011 16:57:22 +0000

No Hard X-rays from Comet Lovejoy, an amazing sungrazer on 16-Dec-2011

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/No_Hard_X-rays_from_Comet_Lovejoy… continue to the full article

A new UKSP Nugget – 18. Mega-tsunamis above the surface of the Sun

Iain Hannah — Mon, 19 Dec 2011 13:52:37 +0000

18. Mega-tsunamis above the surface of the Sun
by Eamon Scullion, Robert Erdélyi, Victor Fedun, University of Sheffield and Gerry Doyle, Armagh Observatory

Acoustic wave transmission from photosphere to corona in spicules.

http://www.uksolphys.org/?p=3600

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UKSP Nuggets are published on a monthly basis highlighting solar physics research in the UK.

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

Iain Hannah and Lyndsay Fletcher

http://www.uksolphys.org/?p=3600

New EIS nugget

Lucie Green — Wed, 14 Dec 2011 20:58:54 +0000

We are pleased to announce the release of December’s EIS nugget. This month we take a look at the X-flare of September 24, 2011, that was observed by EIS. A lovely data-set was obtained which includes both slit and slot observations. Enjoy!

http://msslxr.mssl.ucl.ac.uk:8080/SolarB/nuggets/nugget_2011dec.jsp

RHESSI Science Nugget No. 165

Hugh Hudson — Mon, 12 Dec 2011 16:58:59 +0000

Spatial distribution of X-ray polarization, and its implications. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Modelling_spatially_resolved_X-ray_polarization

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets… continue to the full article

Announcing RHESSI Science Nugget No. 164

Hugh Hudson — Mon, 28 Nov 2011 14:24:13 +0000

“Slowly but surely towards the huge amount of flare energy II,” by S. Kolomanski and T. Mrozek. An analysis of the huge energies involved in loop-top sources in flares. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Slowly_but_surely_towards_the_huge_amount_of_energy_II.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Slowly_but_surely_towards_the_huge_amount_of_energy_II… continue to the full article

RHESSI Science Nugget No. 163

Hugh Hudson — Mon, 14 Nov 2011 16:00:47 +0000

Surprisingly precise correlations between X-ray and H-alpha flare kernels

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets… continue to the full article

A new UKSP nugget

Iain Hannah — Thu, 10 Nov 2011 19:34:46 +0000

17. Transverse coronal loop oscillations seen by AIA/SDO
by Rebecca White and Erwin Verwichte, University of Warwick

Probing the coronal plasma with the diagnostic power of kink waves.

http://www.uksolphys.org/?p=3398

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UKSP Nuggets are published on a monthly basis highlighting solar physics research in the UK.

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

Iain Hannah and Lyndsay Fletcher

http://www.uksolphys.org/?p=3398

RHESSI Science Nugget No. 162

Hugh Hudson — Mon, 31 Oct 2011 12:39:10 +0000

The energetics of “slow LDEs”. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Slowly_but_surely_towards_the_huge_amount_of_energy_I

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets… continue to the full article

New EIS nugget

Lucie Green — Fri, 28 Oct 2011 12:27:53 +0000

Announcing a new EIS Nugget:

“Sunspot light-bridges – a bridge from the photosphere to the corona?” by Sarah Matthews (MSSL-UCL).

Please visit it via URL address – http://msslxr.mssl.ucl.ac.uk:8080/SolarB/nuggets/nugget_2011nov.jsp

We publish these at roughly one month intervals.… continue to the full article

New RHESSI Science Nugget (No. 161)

Hugh Hudson — Mon, 24 Oct 2011 12:50:37 +0000

Quasi-Periodic Pulsations: Fermi GBM results, by Gruber and Lachowicz. This Nugget points out the significance of “red noise” in time-series analyses of the QPP often found in solar flares.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Quasi-Periodic_Pulsations:_Fermi/GBM_Results… continue to the full article

A new UKSP nugget

Iain Hannah — Fri, 21 Oct 2011 14:34:48 +0000

16. The Alfvén Amplifier by Youra Taroyan, Aberystwyth University

The Alfvén instability of steady state flux tubes.

http://www.uksolphys.org/?p=3258

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UKSP Nuggets are published on a monthly basis highlighting solar physics research in the UK.

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

Iain Hannah and Lyndsay Fletcher

http://www.uksolphys.org/?p=3258… continue to the full article

New RHESSI Science Nugget (No. 160)

Hugh Hudson — Tue, 11 Oct 2011 19:28:36 +0000

The STEREO observations of footpoint sources let us measure their true heights relative to the photosphere. This Nugget discusses the HMI white light, and RHESSI hard X-ray, observations of SOL2011-02-24, with this in mind.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/A_Flare_in_3D… continue to the full article

New EIS nugget

Lucie Green — Sun, 02 Oct 2011 18:51:09 +0000

We are pleased to announce a new EIS nugget celebrating 5 years of EIS observations. If anyone would like to add their memories and stories of working with EIS to be part of a future nugget, please contact Lucie.

http://bit.ly/qFgSQN… continue to the full article

New RHESSI Science Nugget (No. 159)

Hugh Hudson — Wed, 28 Sep 2011 14:02:07 +0000

Already in 2011 no fewer than 7 X-class flares have happened already. These bring with them welcome gamma-radiation, observed both by RHESSI and also by Fermi.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Solar_Max_Arrives… continue to the full article

A new UKSP Nugget

Iain Hannah — Mon, 26 Sep 2011 11:36:07 +0000

15. Structure and Dynamics of a Polar Crown Cavity as Observed by SDO/AIA

by Stéphane Régnier, Robert Walsh and Caroline Alexander,
University of Central Lancashire

EUV observations of an erupting cavity.

http://www.uksolphys.org/?p=3253

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UKSP Nuggets are published on a monthly basis highlighting solar physics
research in the UK.

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

Iain Hannah and Lyndsay Fletcher

http://www.uksolphys.org/?p=3253

New RHESSI Science Nugget (No. 158)

Hugh Hudson — Thu, 08 Sep 2011 07:46:51 +0000

A beautiful eruptive event (a SEE) appears to show reconnection in an example of the new EVE “super-late” phase of a flare.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Two-stage_SEE_Shows_Reconnection… continue to the full article

Announcing a new EIS Science Nugget

Lucie Green — Fri, 26 Aug 2011 18:01:36 +0000

Announcing a new EIS Science Nugget

“NLFFF extrapolation of an emerging active region” by Gherardo Valori, LESIA-Observatoire de Paris.

Please visit it via URL address – http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

We publish these at roughly one month intervals and welcome contributions from the community.… continue to the full article

A new UKSP Nugget

Iain Hannah — Wed, 17 Aug 2011 13:21:23 +0000

14. A New Model for the Solar Magnetic Carpet
by Karen Meyer, Duncan Mackay University of St Andrews, and Aad van Ballegooijen, Harvard-Smithsonian Center for Astrophysics

Quiet sun observations motivate dynamic model of the photosphere.

http://www.uksolphys.org/?p=2990… continue to the full article

RHESSI Science Nugget No.157

Hugh Hudson — Wed, 17 Aug 2011 13:08:56 +0000

Inverse Compton theory may be gaining momentum!

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Scattered_Light:_Inverse_Compton_Scattering_and_Coronal_Hard_X-ray_Sources… continue to the full article

New EIS science nugget

Lucie Green — Sat, 30 Jul 2011 08:00:47 +0000

Announcing a new EIS Science Nugget

“Evidence of a Connection Between Active Region Outflows and the Solar Wind” by David H. Brooks (GMU) and Harry Warren (NRL).

Please visit it via URL address – http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

We publish these at roughly one month intervals.… continue to the full article

New RHESSI Science Nugget (No. 156)

Hugh Hudson — Thu, 28 Jul 2011 20:26:15 +0000

High resolution allows us to determine source heights for the first time

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/X-ray,_EUV_%26_WL_emission_heights_observed_by_RHESSI_%26_SDO… continue to the full article

Announcing a new UKSP nugget

Iain Hannah — Tue, 26 Jul 2011 11:15:48 +0000

13. The density of EUV flare footpoints
by David Graham, Lyndsay Fletcher & Iain Hannah, University of Glasgow

Density diagnostics of flare footpoints show a little bit of corona in the chromosphere.

http://www.uksolphys.org/?p=2987… continue to the full article

New RHESSI Science Nugget (No. 155)

Hugh Hudson — Wed, 13 Jul 2011 14:43:46 +0000

A hard X-ray spike elicits a sympathetic response.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Hard_X-rays_and_Sympathy… continue to the full article

New EIS science nugget

Lucie Green — Fri, 01 Jul 2011 07:09:57 +0000

Announcing a new EIS Science Nugget for 1st July 2011:

“Temporal evolution of microflares in bright points” by Suguru Kamio (MPS).

Please visit it via URL address – http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

We publish these at roughly one month intervals. Please contact Lucie Green if you would like to submit a nugget.… continue to the full article

New RHESSI Science Nugget (No. 154)

Hugh Hudson — Thu, 30 Jun 2011 09:33:30 +0000

Microflares too have powerful particle acceleration. See
http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Suzaku_Microflares
by S. Ishikawa

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/… continue to the full article

Announcing a new UKSP nugget

Iain Hannah — Mon, 20 Jun 2011 18:54:42 +0000

Announcing a new UKSP nugget:

The Heating of Coronal Loops by Random Photospheric Twisting
by Michael Bareford and Philippa Browning from the University of Manchester
and Ronald Van der Linden from the Royal Observatory of Belgium.

http://www.uksolphys.org/?p=2730

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UKSP Nuggets are published on a monthly basis highlighting solar physics research in the UK.

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

Iain Hannah and Lyndsay Fletcher

http://www.uksolphys.org/?p=2730

New RHESSI Science Nugget (No. 153)

Hugh Hudson — Mon, 20 Jun 2011 07:36:39 +0000

Copious hard X-ray emission with minimal chromospheric evaporation!

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Acceleration_without_Heating… continue to the full article

New RHESSI Science Nugget

Hugh Hudson — Tue, 31 May 2011 21:13:01 +0000

No. 152, by C. L. Raftery, “DIY spectroscopy: Analyzing AIA diffraction patterns”

Imaging spectroscopy in the EUV, at AIA resolution!

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/DIY_spectroscopy:_Analyzing_AIA_diffraction_patterns… continue to the full article

New EIS science nugget

Lucie Green — Fri, 27 May 2011 14:04:58 +0000

Announcing a new EIS Science Nugget for 1st June 2011:

“Contamination levels of EIS (as measured by QCM and LED flat-field intensity levels)” by Louisa Bradley (MSSL/UCL).

Please visit it via URL address – http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

The nugget for 1st July will be “Evidence of a Connection Between Active Region Outflows and the Solar Wind” by David H. Brooks (George Mason University) and Harry P. Warren (Naval Research Laboratory).

We publish these at roughly one month intervals. Please contact Lucie Green if you would like to submit a nugget.

Announcing a new UKSP nugget

Iain Hannah — Mon, 23 May 2011 13:55:06 +0000

Announcing a new UKSP nugget

Tracking CME effects from “the Sun to the mud”
by Peter Gallagher, Pietro Zucca, Eoin Carley and Joe McCauley,
Astrophysics Research Group at Trinity College Dublin, Ireland*

http://www.uksolphys.org/?p=2633

*nearby the UK this month.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UKSP Nuggets are published on a monthly basis highlighting solar physics research in the UK.

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

Iain Hannah and Lyndsay Fletcher

http://www.uksolphys.org/?p=2633

New RHESSI Science Nugget

Hugh Hudson — Wed, 11 May 2011 18:40:52 +0000

No. 151, EVE/ESP and the Neupert Effect, by H. Hudson.

The Neupert Effect works, sort of, in a limb gamma-ray flare.

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/EVE/ESP_and_the_Neupert_Effect… continue to the full article

New EIS science nugget

uksp_sec — Wed, 01 Dec 2010 20:48:28 +0000

From: Lucie Green – lmg@mssl.ucl.ac.uk

New EIS science nugget

http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

UCL-MSSL is pleased to announce a new Hinode EIS science nugget which
discusses flux rope formation in a sigmoidal active region and is by Lucie
Green from UCL/MSSL.

We will be back with more great science nuggets in 2011 with the first
nugget being released on 15 January 2011.… continue to the full article

New UKSP nugget

uksp_sec — Wed, 01 Dec 2010 20:47:50 +0000

From: Lyndsay Fletcher – lyndsay@astro.gla.ac.uk

Announcing a new UKSP nugget

‘MHD wave propagation and magnetic topology’ by James McLaughlin has been
published at
http://www.uksolphys.org/nuggets/uksp-nugget/5-mhd-wave-propagation-and-magnetic-topology/

What happens when an MHD wave meets a coronal null, and why should we be
interested?

Note: UKSP nuggets are published monthly. If you would like to submit your
nugget idea, go to
http://www.uksolphys.org/uksp-nuggets/submit-uksp-nugget/

Lyndsay Fletcher (UKSP Nugget editor)

New RHESSI Science Nuggets

uksp_sec — Mon, 15 Nov 2010 16:17:31 +0000

From: Hugh Hudson – hhudson@ssl.berkeley.edu

New RHESSI Science Nuggets

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

No. 139: “But there was a bigger one” – A cycle 24 coronal hard X-ray event.

No. 140: “Major Flare Watch Evaluation” – How well the Chief Observers do.… continue to the full article

EIS science nugget

uksp_sec — Sat, 02 Oct 2010 21:00:34 +0000

From: Lucie Green – lmg@mssl.ucl.ac.uk

EIS science nugget

http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

UCL-MSSL is pleased to announce a new Hinode EIS science nugget which discusses the new EIS Bright Point Trigger that has been successfully tested.

Next month’s nugget is entitled “Spectroscopic analysis of an EUV wave/dimming observed by EISy Feng Chen. EIS nuggets are published on the 1st of every month and we welcome contributions from the community. Please contact Lucie Green if you are interested (lmg@mssl.ucl.ac.uk).

New UKSP Nugget

uksp_sec — Wed, 15 Sep 2010 09:23:49 +0000

From: Lyndsay Fletcher – lyndsay@astro.gla.ac.uk

New UKSP Nugget

A new UKSP nugget has been published:

Solar flare electrons – testing the two-component model

by Jingnan Guo et al.

http://www.uksolphys.org/nuggets/uksp-nugget/3-solar-flare-electrons-–-testing-the-two-component-model/

UKSP Nuggets are published approximately monthly – contact
lyndsay@astro.gla.ac.uk if you would like to contribute… continue to the full article

New RHESSI Science Nugget

uksp_sec — Wed, 15 Sep 2010 09:22:36 +0000

From: Hugh Hudson – hhudson@ssl.berkeley.edu

New RHESSI Science Nugget

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/The_X-ray_Limb

RHESSI gets to determine R_Sun.… continue to the full article

New RHESSI Science Nugget

uksp_sec — Wed, 01 Sep 2010 11:29:02 +0000

From: Hugh Hudson – hhudson@ssl.berkeley.edu

New RHESSI Science Nugget

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

“Fast electrons relaxing” – how a nonthermal particle distribution can return to Maxwellian correctness. … continue to the full article

New EIS science nugget

uksp_sec — Wed, 01 Sep 2010 11:28:36 +0000

From: Lucie Green – lmg@mssl.ucl.ac.uk

New EIS science nugget

http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

UCL-MSSL is pleased to announce a new Hinode EIS science nugget.

The nugget looks at the evolution of a small-scale flux emergence event in NOAA active region 10971 and is written by Santiago Vargas Domínguez and Salvo Guglielmino.

Next month’s nugget is entitled “the EIS bright point trigger”.

EIS nuggets are published on the 1st of every month and we welcome contributions from the community. Please contact Lucie Green if you are interested.

New RHESSI Science Nugget

uksp_sec — Mon, 16 Aug 2010 08:43:39 +0000

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

Semi-empirical models of the chromosphere, and plasma physics.… continue to the full article

New EIS science nugget

uksp_sec — Mon, 16 Aug 2010 08:42:56 +0000

http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp

UCL-MSSL is pleased to announce a new Hinode EIS science nugget.

The nugget looks at preparing EIS data using neural networks to obtain precise Doppler velocity measurements and is written by Dr. Suguru Kamio.

Next month’s nugget is entitled “the EIS bright point trigger”.

EIS nuggets are published on the 1st of every month and we welcome contributions from the community. Please contact Lucie Green if you are interested.

UKSP nugget

uksp_sec — Mon, 16 Aug 2010 08:41:44 +0000

A new UKSP nugget has appeared:

Magnetic relaxation in the solar corona, by Antonia Wilmot-Smith, Anthony Yeates, Gunnar Hornig and David Pontin (University of Dundee)

http://www.uksolphys.org/nuggets/2-magnetic-relaxation-in-the-solar-corona/

Future UKSP Nuggets will be published on at least a monthly basis. For more info:
http://www.uksolphys.org/uksp-nuggets/

From
Lyndsay Fletcher & Iain Hannah… continue to the full article

New RHESSI Science Nugget

uksp_sec — Fri, 26 Mar 2010 14:41:34 +0000

From: Hugh Hudson hhudson@ssl.berkeley.edu

New RHESSI Science Nugget

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Waiting_Times_of_Solar_Hard_X-Ray_Flares

“Waiting Times of Solar Hard X-Ray Flares” by Markus Aschwanden and Jim McTiernan… continue to the full article