Refereed Publications

 [79] Unusual Stokes profiles during flaring activity of a delta sunspot
 C. E. Fischer, C. U. Keller, F. Snik, L. Fletcher, and H. Socas-Navarro, 2012, Astronomy and Astrophysics (submitted)

 [78] Numerical simulations of HXR source sizes
 M. Battaglia, E. P. Kontar, L. Fletcher, A. L. MacKinnon, 2012, The Astrophysical Journal (submitted)

 [77] Observations of enhanced EUV continua during an X-class solar flare using SDO/EVE
 R. O. Milligan, P. C. Chamberlin, H. S. Hudson, T. N. Woods, M. Mathioudakis, L. Fletcher, A. F. Kowalski, F. P. Keenan, 2012, The Astrophysical Journal (in press)

 [76] Break-up of returning plasma after the 7 June 2011 filament eruption by Rayleigh-Taylor instabilities
 D. E. Innes, R. Cameron, L. Fletcher, B. Inhester and S. K. Solanki, 2012, Astronomy and Astrophysics (accepted)

 [75] Charge-exchange limits on low-energy alpha particle fluxes in solar flares
 H. S. Hudson, L. Fletcher, A. L. MacKinnon and T. N. Woods, 2011, Astrophysical Journal (submitted)

 [74]The role of filament activation in a solar flare
 F. Rubio da Costa, F. Zuccarello, L. Fletcher, P. Romano, N. Labrosse. 2012, Astronomy and Astrophysics 539,27

 [73] Momentum Distribution in Solar Flare Processes
  H. S. Hudson, L. Fletcher, G. Fisher, W. Abbett, A. Russell, Solar Physics, 2012, 277, 77

 [72] The EVE Doppler sensitivity and flare observations
 H. S. Hudson, T. N. Woods, P. C. Chamberlin, L. Fletcher, G. del Zanna, L. Didkovsky, N. Labrosse, D. Graham, 2011, Solar Physics 273, 69

 [71] Solar Particle Radiation and Kinetics - SPARK
  S. A. Matthews, D. R. Williams, K. L. Klein et al., 2011, Experimental Astronomy DOI 10.1007/s10686-011-9260-3

 [70] Evolution of sunspot properties during cycle 23
  F T. Watson, L. Fletcher and S. Marshall, 2011, Astronomy and Astrophysics 533, id. A14

 [69] Recent Progress in Understanding Particle Acceleration Processes in Solar Flares
  V. V. Zharkova et al, 2011, Space Science Reviews 159, 357

 [68] Relationship between hard and soft X-ray emission components of a solar flare
  J. Guo, S. Liu, L. Fletcher and E. P. Kontar, 2011, Astrophysical Journal, 728, 4

 [67] Hinode/EIS plasma diagnostics in the flaring solar chromosphere
  D. R. Graham, L. Fletcher and I. G. Hannah, 2011, Astronomy and Astrophysics 532, 27

 [66] Lepton models for TeV emission from SNR RX J1713.7-3946
  Zhong-Hui Fan, Siming Liu, Qiang Yuan and Lyndsay Fletcher, 2010, Astronomy & Astrophysics Letters 517, L4

 [65] From large-scale loops to the sites of dense flaring loops: preferential interaction for long-period pulsations in solar flares
  C. Foullon, L. Fletcher, I. G. Hannah, E. Verwichte, B. Cecconi, V. Nakariakov and K. Phillips, 2010, Astrophysical Journal 719, 151

 [64] The Optical Depth of White Light Flare Continuum
  H. E. Potts, H. S. Hudson, L. Fletcher, and D. A. Diver 2010, Astrophysical Journal 722, 1514

 [63] Elementary Energy Release Events in Flaring Loops: Effects of Chromospheric Evaporation on X-rays
  S. Liu, F. Han and L. Fletcher 2010, Astrophysical Journal 709, L58

 [62] An Observational Overview of Solar Flares
  L. Fletcher, B. R. Dennis, H. S. Hudson, S. Krucker, K. Phillips, A. Veronig et al., 2011, Space Science Reviews 159, 19

 [61] Elementary energy release events in solar flares
  S. Liu and L. Fletcher, 2009, Ap. J. 701, L34-38

 [60] Observations of a solar flare and filament eruption in Lyman alpha and X-rays
  F. Rubio da Costa, L. Fletcher, N. Labrosse and F. Zuccarello, 2009, Astron. Astrophys. 507, 1005

 [59] Using Active Contours for Semi-Automated Tracking of UV and EUV Solar Flare Ribbons
  C. D. Gill, L. Fletcher, and S. Marshall, 2010, Solar Physics, 262, 355

 [58] Modelling the longitudinal asymmetry in sunspot emergence - the role of the Wilson Depression
  F. T. Watson, L. Fletcher, S. Dalla and S. Marshall, 2009, Solar Physics 258

 [57] Discovery of hard X-ray emission from a flare-related jet
  H. M. Bain and L. Fletcher, 2009, Astron. Astrophys. 508, 1443.

 [56] Evolution of an eruptive flare loop system
  P. Romano, F. Zuccarello, L. Fletcher, F. Rubio da Costa, H. M. Bain and L. Contarino, 2009, Astron. Astrophys. 498, 901

 [55] Observations of conduction driven evaporation in the early rise phase of solar flares
  M. Battaglia, L. Fletcher and A. O. Benz, 2009, Astron. Astrophysics 498, 891

 [54] Inertial Alfven wave acceleration of solar flare electrons
  K. G. McClements and L. Fletcher, 2009, Ap.J. 693, 1494

 [53] Energy Release and Transfer in Solar Flares: Simulations of Three-Dimensional Reconnection
  J. Birn, L. Fletcher, M. Hesse and T. Neukirch, 2009, Ap.J. 695, 1151

 [52] On Partially Erupting Prominences
  D. Tripathi, S. E. Gibson, J. Qiu, L. Fletcher, R. Liu, H. Gilbert and H. E. Mason, 2009, Astron. Astrophys 498, 295

 [51] Test particle simulations of collisional impurity transport in rotating spherical tokamak plasmas
  R. J. McKay, K. G. McClements, A. Thyagaraja, L. Fletcher, 2008, Plasma Physics and Controlled Fusion 50, 065017.

 [50] Hard X-ray emission from the solar corona
  S. Krucker, P.Cargill, M. Battaglia, L. Fletcher, H. Hudson et al., 2008, Astronomy & Astrophysics Review 16, 155

 [49] Flares and the chromosphere
  H. Hudson, L. Fletcher, 2009, Earth, Planets & Space 61, 577580

 [48] The intense high altitude hard X-ray flare of 20th July 2002
  L. Bone., J. C. Brown, L. Fletcher, 2008, A&A Letters (submitted)

 [47] Invisible sunspots and the rate of solar magnetic flux emergence
  S. Dalla, L. Fletcher, N. A. Walton, 2008, A&A Letters 479, L1

 [46] Ultra-violet footpoints as tracers of coronal magnetic connectivity and restructuring during a solar flare
  L. Fletcher, 2009, A&A 493, 241-250

 [45] The relative timing of supra-arcade downflows in solar flares
  J. I. Khan, H. M. Bain, L. Fletcher, 2007, A&A 475, 333

 [44] Flare energy transport by large-scale Alfven waves and the electron acceleration problem
  L. Fletcher, H. S. Hudson 2008, ApJ 675, 1645.

 [43] Flare productivity of newly-emerged paired and isolated solar active regions
  S. Dalla, L. Fletcher and N. A. Walton 2007, A&A 468, 1103

 [42] Fast Alfven Wave Heating and Acceleration of Ions in a Non-Uniform Magnetoplasma
  R. J. McKay, K. G. McClements and L. Fletcher, 2007, ApJ 658, 631.

 [41] A TRACE white light and RHESSI hard X-ray study of flare energetics
  L. Fletcher, I. G. Hannah, H. S. Hudson & T. R. Metcalf, 2007, Ap.J 656, 1187

 [40] Birth and Evolution of a dense coronal loop in a complex flare region
  L. Bone, J. C. Brown, L. Fletcher, A. Veronig & S. White, 2007, A&A 466, 339

 [39] Optimal Filtering of Solar Images Using Soft Morphological Processing Techniques
  S. Marshall, L. Fletcher & K. Hough 2006, A&A 427, 729

 [38] Comparison of the energy spectra and number fluxes from a simple flare model to observations
  I. G. Hannah & L. Fletcher, 2006, Solar Physics 236, 59

 [37] Observations of Coronal Loop Shrinkage During the Decay Phase of a Solar Flare
  J. I. Khan, L. Fletcher & N. V. Nitta 2006, A&A 453, 335

 [36] The Observational Motivation for Computational Advances in Solar Flare Physics
L. Fletcher, 2005, Space Science Reviews 121, 141

 [35] X-ray Quasi-periodic Pulsations in Solar Flares and Magnetohydrodynamic Oscillations
C. Foullon, E. Verwichte, V. M. Nakariakov, L. Fletcher, 2005, A&A 440L, 59

  [34] Accelerated Particles in Solar Flares - Observations in 'MHD and Collisionless Theory and Applications to the Sun and  Magnetosphere', J. Birn and E. R. Priest (eds) CUP,
L. Fletcher, 2007, p291. ISBN-13 978-0-521-85420-7

  [33] Flows in the Solar Atmosphere due to Eruptions on the 15th July 2002
L. K. Harra, J. L. Culhane, P. Demoulin et al. 2005, A&A 438, 1099

  [32] Multi-Altitude Observations of a Coronal Jet During the Third Whole Sun Month Campaign
Y.-K. Ko. J. C. Raymond, S. E. Gibson et al. 2005, Ap.J. 623, 519

[31] FIP Enhancement by Alfven Ionization
D. A. Diver, L. Fletcher and H. E. Potts, 2005, Sol. Phys. 227, 207

[30] Electron Acceleration at Reconnecting X-points in Solar Flares
B. Hamilton, L. Fletcher, K. G. McClements and A. Thyagaraja, 2005, Ap. J. 625, 496

[29] Rapid Field Energy Dissipation at Magnetic X-points
K. G. McClements, A. Thyagaraja, N. Ben Ayed and L. Fletcher, 2004, Ap. J. 609, 643.

[28] Tracking of TRACE Ultraviolet Flare Footpoints
L. Fletcher, J. A. Pollock and H. E. Potts 2004, Sol. Phys. 222, 279

[27] Overview of Solar Flares: The Yohkoh Perspective
H. S. Hudson, L. Fletcher, J. I. Khan and T. Kosugi, 2004, in 'Solar and Space Weather Radiophysics', D. E. Gary and C. Keller (eds) Astrophysics and Space Science Library vol 314, P153

[26] Field-Guided Proton Acceleration at Reconnecting X-points in Flares
B. Hamilton, K. G. McClements, L. Fletcher & A. Thyagaraja, 2003, Sol. Phys 214, p339

  [25] Spectral and Spatial Variations of Flare Hard X-ray Footpoints
L. Fletcher & H. S. Hudson, 2002, Sol. Phys 210, p307

[24] The Energy Release Process in Solar Flares; Constraints from TRACE Observations
   L. Fletcher & H. P. Warren in `Energy Conversion and Particle Acceleration in the Solar Corona', Karl-Ludwig Klein (ed.)Lecture Notes in Physics, Vol. 612 (2003)

[23] The Structure and Evolution of a Sigmoidal Active Region
S. E. Gibson, L. Fletcher, G. Del Zanna, C. D. Pike, H. E. Mason et al., 2002, ApJ 574, 1021

[22] The Magnetic Structure and Generation of EUV Flare Ribbons
L. Fletcher & H. S. Hudson, 2001, Sol. Phys 204, 71

  [21] A Relationship Between Transition Region Brightenings, Abundances, and Magnetic Topology
L. Fletcher, M. C. Lopez-Fuentes, C. H. Mandrini, B. Schmieder, P. Demoulin et al. 2001, Sol.Phys. 203, 255.

[20] Multi-wavelength observations of an M1.9 Class Flare - evidence for Spine and Fan reconnection
L.Fletcher, T.R. Metcalf, D. Alexander, D. S. Brown & L. A. Ryder, 2001 ApJ 554, 541

[19] What is Moss?
T. E. Berger, B. De Pontieu, L. Fletcher, et al., 1999, Sol. Phys 190, p409

[18]  High resolution observations of plasma jets in the solar corona
D. Alexander & L. Fletcher, 1999, Sol. Phys 190, 167

[17] Plasma Diagnostics of Transition Region ``Moss'' using SOHO/CDS and TRACE
L. Fletcher & B. De Pontieu, 1999, ApJ. Letts. 520, L135-138

[16] A new view of the solar outer atmosphere by the Transition Region and Coronal Explorer
C. J. Schrijver et al. 1999, Sol. Phys. 187, 261

[15] Coronal Loop Oscillations Observed with TRACE
M. J. Aschwanden, L. Fletcher. C. J. Schrijver & D. Alexander, 1999, Ap.J. 520, 880-894

[14] Deconvolution of Directly Precipitating and Trap-Precipitating Electrons in Solar Flares: III Yohkoh HXT Data Analysis
M. J. Aschwanden, L. Fletcher, T. Sakao, T. Kosugi & H. Hudson, 1999, Ap.J 517, 977-989

[13] Impact Polarization from Evaporative Upflows
L. Fletcher & J. C. Brown, 1998, Astron. Astrophys. 338, 737.

[12] A Model for Hard X-Ray Emission from the top of flaring loops
L. Fletcher & P. C. H. Martens, 1998, Ap.J. 505, 418

[11] Numerical simulations of coronal particle trapping
L. Fletcher, Astron. Astrophys. 1997, 326, 1252

[10] Particle acceleration and transport in reconnecting plasmas
L. Fletcher & P. Petkaki, 1997, Solar Physics, 172, 267

[9] Magnetic Pumping in the CV AE Aquarii
J. Kuijpers, L. Fletcher, et al. 1997, Astron. Astrophys. 322, 242

[8] Are CME's caused by magnetic pumping?
J. Kuijpers & L. Fletcher 1996, Sol. Phys. 169, 415

[7] The height distribution of non-thermal X-ray sources in impulsive solar flares
L. Fletcher, 1996, Astron. Astrophys. 310. 661

[6] On the Generation of Looptop Impulsive Hard X-ray Sources
L. Fletcher, 1995, Astron. Astrophys. 303, L9

[5] On determining beam parameters using HXR loop-top sources
L.Fletcher, 1996, Astrophys. Lett. Comm. 1996, 34, 151.

[4] H alpha impact polarization from solar flare electrons?
L. Fletcher & J. C. Brown, 1995, Astron. Astrophys. 294, 260?

[3] Modelling Particle Transport with Stochastic Simulations.
L.Fletcher, 1994, Sp.Sci. Revs. 68, p.239. Proceedings of the workshop on `Fragmented Energy Release in Sun and Stars', Utrecht 1993, ed. G.H.J. Van den Oord, .

[2] H alpha Impact Polarization of Wind-Heated Optical Bullets in SS433
J. C. Brown & L. Fletcher, Astron. Astrophys. 259, L43

[1] Asymmetric Flux Loops in Active Regions II.
K. Petrovay et al., 1990, Sol. Phys. 127, 51.


Conference Publications

Energy Deposition in White Light Flares with TRACE and RHESSI
L. Fletcher, I. G. Hannah, H. S. Hudson and T. R. Metcalf, Proceedings of the Coimbra Solar Physics Meeting on 'The Physics of Chromospheric Plasmas', 3-16 October 2006, Coimbra, Portugal, P. Heinzel, I. Dorotovic, R. J. Rutten (eds). Proc. Astron. Soc. Pacific. Conference Series.

A Magnetometer for the Solar Orbiter Mission
C. M. Carr, T. S. Horbury, A. Ballogh et al., 2007, Proceedings of the Second Solar Orbiter Workshop, 16-20 October 2006, Athens, Greece, ESA-SP 641

Solar and Cosmic Ray Physics and the Space Environment: Studies for and with LISA
D. N. A.Shaul, K. L. Kaplin, H. Araujo et al., 2006 in "Laser Interferometer Space Antenna: Sixth International LISA Symposium", AIP Conference Proceedings 873, 172.

Solar Active Region emergence and flare productivity
S. Dalla, L. Fletcher, N. A. Walton, 2006, in "The Virtual Observatory in Action: New Science, New Technology, and Next Generation Facilities, 26th meeting of the IAU, Special Session 3, 17-18, 21-22 August, 2006 in Prague, Czech Republic, SPS3, #45".

Coronal Heating and X-ray Emission from a Beam of Fast Electrons
J. A. Pollock, L. Fletcher 2005 in "Proceedings of the 11th European Solar Physics Meeting "The Dynamic Sun: Challenges for Theory and Observations" (ESA SP-600). 11-16 September 2005, Leuven, Belgium. Editors: D. Danesy, S. Poedts, A. De Groof and J. Andries. Published on CDROM., p.138.1

A Solar Science Case with Astrogrid: Flare Productivity of Recently-Emerged Paired and Isolated Active Regions
S. Dalla, L. Fletcher and N. A. Walton, 2005 in "Proceedings of the 11th European Solar Physics Meeting "The Dynamic Sun: Challenges for Theory and Observations" (ESA SP-600). 11-16 September 2005, Leuven, Belgium. Editors: D. Danesy, S. Poedts, A. De Groof and J. Andries. Published on CDROM., p.117.1

Multiwavelength Observations of a Partially Occulted Solar Flare
L. Bone, J. C. Brown, L. Fletcher, 2005 in "Proceedings of the 11th European Solar Physics Meeting "The Dynamic Sun: Challenges for Theory and Observations" (ESA SP-600). 11-16 September 2005, Leuven, Belgium. Editors: D. Danesy, S. Poedts, A. De Groof and J. Andries. Published on CDROM., p.38.1

X-ray Quasi-Periodic Pulsations in Solar Flares as Magnetohydrdynamic Oscillations
C. Foullon, E. Verwichte, V. M. Nakariakov, L. Fletcher, 2005 in "Proceedings of the 11th European Solar Physics Meeting "The Dynamic Sun: Challenges for Theory and Observations" (ESA SP-600). 11-16 September 2005, Leuven, Belgium. Editors: D. Danesy, S. Poedts, A. De Groof and J. Andries. Published on CDROM., p.33.1

X-ray Quasi-Periodic Pulsations in Solar Flares as Magnetohydrdynamic Oscillations
C. Foullon, E. Verwichte, V. M. Nakariakov, L. Fletcher, 2005 in Proceedings of the International Scientific Conference on Chromospheric and Coronal Magnetic Fields (ESA SP-596). 30 August - 2 September 2005, Katlenburg-Lindau, Germany. Editors: D.E. Innes, A. Lagg & S.K. Solanki, Published on CDROM, p.46.1

Electron inertia modifications to X-point reconnection in solar flares
K. G. McClements, A. Thyagaraja, N. Ben Ayed, L. Fletcher, 2005, Proceedings of the 35th COSPAR Scientific Assembly, Paris, July 18-25, p.1242

RHESSI Microflare Statistics
I. G. Hannah, S. Christe, S. Krucker, H. S. Hudson, L. Fletcher and M. A. Hendry, 2004, Proceedings of the 15th SOHO Workshop, St. Andrews, September 6-9 2004, ESA SP-575, p.259

Energetic Particles in the Solar Atmosphere (review)
L. Fletcher, 2002, Proceedings of the 10th European Solar Physics Meeting, Prague, September 9-14 2002, ESA SP-506, p.223

The Kolmogorov-Sinai Entropy, Chaotic Dynamics and Acceleration of Particle Orbits Near a X-type Neutral Point
I. Hannah, L. Fletcher, M. A. Hendry, 2002, Proceedings of the 10th European Solar Physics Meeting, Prague, September 9-14 2002, ESA SP-506, p.295

A new algorithm for studying particle acceleration in flares
B. Hamilton, L. Fletcher, K.G. McClements, A. Thyagaraja, 2002, Proceedings of the 10th European Solar Physics Meeting, Prague, September 9-14 2002, ESA-SP, p.291

Magnetic Flux Ropes: Would We Know One if We Saw One?
Gibson, S., Low, B. C., Leka, K. D., Fan, Y. & Fletcher, L., in 'Magnetic Coupling of the Solar Atmosphere', proceedings of IAU Colloquium 188, Santorini, Greece, ESA-SP, 2002 (submitted)

CDS UV brightenings explained by Quasi-Separatrices and Bald patches in a S-shape active region
Schmieder, B., Fletcher, L. Mandrini, C., Lopez, M., Demoulin, P., et al., 2000, in "Recent Insights into the Physics of the Sun and Heliosphere: Highlights from SOHO and other Space Missions", IAU Symposium 201, Manchester August 2000, p 121

Sigmoid structure and evolution
Gibson, S. E.; Fletcher, L.; Alexander, D.; Biesecker, D.; Burkepile, J. et al., in "Recent Insights into the Physics of the Sun and Heliosphere: Highlights from SOHO and other Space Missions", IAU Symposium 201, Manchester August 2000, p 105

Electron Trapping and Precipitation in Asymmetric Solar Flare Loops
M. J. Aschwanden, L. Fletcher, T. Sakao, T. Kosugi, H. Hudson., 1999, IAU Symposium 195 'Highly Energetic Physical Processes and Mechanisms for Emission from Astrophysical Plasmas', P.C.H. Martens \& S. Tsuruta (eds.)

Looptop Hard X-ray Sources
Fletcher, 1999, Proceedings of the 9th European Solar Physics Meeting, ESA-SP 448, 693

Surges and Filaments in Active Regions During SOHO Campaigns
B. Schmieder, Y.Deng, P.Rudawy, N.Nitta, C.H. Mandrini, L.Fletcher,
P. Martens, D. Innes. P.Young & H. Mason, 1998,  in Solar Jets and
Coronal Plumes,  ESA-SP 421, S. Koutchmy, P.Martens and K.Shibata (eds)

Reconnection, Particle Acceleration and Hard X-ray Emission in Solar  Flares.
P.C.H. Martens &  L.Fletcher, 1998, in Proceedings of the US-Japan Workshop
on the Physics of Magnetic Reconnection and Dynamos, Princeton Plasma Physics
Laboratory, R. Kulsrud and  M. Yamada (eds)

Acceleration of O 5+ ions by magnetic turbulence in polar coronal holes.
L.Fletcher  & M.C.E.Huber, 1997, ESA SP, 5th SoHO workshop, ed. A. Wilson.

Hard X-ray emission from a mirror trap at the top of reconnecting loops
P.C.H.Martens &L.Fletcher 1998, in Yohkoh 5th Annoiversary Symposium -
`Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond', Tokyo,
Japan, ed. T.Watanabe. 269

Radio Emission from  AE Aquarii.
M. Abada-Simon et al. 1995, in `Radio Emission from the Sun and Stars',
ASP Conference series 53, eds. J.M.Parades andR.Taylor

Triggering the Radio Emission from AE Aquarii.
D. Steeghs et al. 1995, IAU Colloquium 158, `Cataclysmic Variables
and related objects, ed A.Evans and J.Wood

Popular

SOHO - een zonne-observatorium in de ruimte
L. Fletcher 1998, Zenit January 1998, p4

The Costs and Benefits of Space Weather (book review)
L. Fletcher 2003, Contemporary Physics, 44, p451.

Solar Physics in Dublin (Meeting Report)
R. Erdelyi, L. Fletcher and G. Doyle. 2003, Astronomy and Geophysics 44, p315.

Core to Corona: UKSP 2004 (Meeting Report)
L. Fletcher and R. Erdelyi, 2004, Astronomy and Geophysics, 45, p33.