Topics that have interested me over the years

• 1963-5: A calculation of the rate of neutrino emission by weak interaction synchrotron radiation from a strongly magnetised white dwarf
  Landstreet 1967, Synchrotron Radiation of Neutrinos and Its Astrophysical Significance, Phys Rev 153, 1372.

• 1968-70: I developed and explored the decentred dipole magnetic field model to describe magnetic fields observed in peculiar A (Ap) stars (the rare upper main sequence magnetic stars)
  Landstreet 1970, The Orientation of Magnetic Axes in the Magnetic Variables, ApJ 159, 1001.

• 1969-1975: Discovery of huge (MegaGauss) fields in white dwarf stars
  Angel & Landstreet 1970, Magnetic Observations of White Dwarfs, ApJLett 162, L61;
  Kemp, Swedlund, Landstreet & Angel 1970, Discovery of Circularly Polarized Light from a White Dwarf, ApJLett 161, L77;
  Angel & Landstreet 1971, Detection of Circular Polarization in a Second White Dwarf, ApJLett 164, L15
  and Discovery of Periodic Variations in the Circular Polarization of the White Dwarf G195-19, ApJLett 165, L71;
  Landstreet & Angel 1971, Discovery of Circular Polarization in the White Dwarf G99-37, ApJLett 164, L67, etc, etc.

• 1970-77: Development of the Hbeta photoelectric polarimeter as a powerful tool for detecting magnetic fields in previously unmeasureable rapid rotators and B stars
  Landstreet et al 1975, A search for strong magnetic fields in rapidly rotating Ap stars, ApJ 201, 624;
  Landstreet & Borra 1977, Discovery of magnetic fields in three short-period Ap stars, ApJLett 212, L43.

• 1977-78: First serious and multiply constrained efforts to model the surface magnetic fields of upper main sequence stars
  Borra & Landstreet 1977, The surface magnetic field distributions of 53 Camelopardalis and Alpha-2 Canum Venaticorum, ApJ 212, 141

• 1978: Detection of the first magnetic field found in a B2 star, and discovery and simple modelling of the first trapped magnetosphere around an OB star.
  Landstreet & Borra 1978, The magnetic field of Sigma Orionis E, ApJLett, 224, L5

• 1978-87: Systematic discovery of magnetic fields among He-weak and He-strong B stars
  Borra & Landstreet 1979, The magnetic field of the helium-strong stars, ApJ 228, 809;
  Borra, Landstreet & Thompson 1983, The magnetic fields of the helium-weak B stars, ApJSupp 53, 151;
  Bohlender, Landstreet, Brown, Thompson 1987, Magnetic field measurements of helium-strong stars, ApJ 323, 325.

• 1980-82: Searches for weak magnetic fields in “normal” stars, first systematic search for fields of a few tens of Gauss in stars
  Landstreet, J. D. 1982, A search for magnetic fields in normal upper-main sequence stars, ApJ 258, 639;
  Shorlin et al. 2002, A highly sensitive search for magnetic fields in B, A and F stars, A&A 392, 637.

• 1985-89: Construction and applications of the first spectrum synthesis code developed for magnetic stars other than the Sun
  Landstreet 1988, The magnetic field and abundance distribution geometry of the peculiar A star 53 Camelopardalis, ApJ 326, 967;
  Landstreet, Barker, Bohlender, Jewison 1989, The magnetic field and abundance distribution geometry of the peculiar B star HD 215441, ApJ 344, 876;
  Bailey et al. 2011, Magnetic field and atmospheric chemical abundances of the magnetic Ap star HD 318107, A& A 535, A25.

• 1990-95: Atomic data for abundance analysis, accurate abundance values for rapidly rotating stars
  Ryabchikova, Hill, Landstreet et al. 1994, Astrophysical determination of optical oscillator strengths for Ti II, MNRAS 267, 697

• 1995-2009: Direct detection of atmospheric velocity fields in main sequence A stars, relation to microturbulence
  Landstreet 1998, Detection of atmospheric velocity fields in A-type stars, A&A 338, 1041
  Landstreet et al 2009, Atmospheric velocity fields in tepid main sequence stars, A&A 503, 973

• 2003- : Discovering the declining field strength of Ap/Bp fossil magnetic fields during the main sequence
  Bagnulo, Landstreet, et al 2006, Searching for links between magnetic fields and stellar evolution. I. A survey of magnetic fields in open cluster A- and B-type stars with FORS1, A&A 450, 777
  Landstreet, Bagnulo et al 2007, Searching for links between magnetic fields and stellar evolution: II. The evolution of magnetic fields as revealed by observations of Ap stars in open clusters and associations, A&A 470, 685
  Landstreet, Silaj et al 2008, Searching for links between magnetic fields and stellar evolution. III. Measurement of magnetic fields in open cluster Ap stars with ESPaDOnS, A&A 481, 465

• 2010-2016: Abundance analyses based on UV spectra studied with spectrum synthesis
  Landstreet 2011, Abundances of the elements He to Ni in the atmosphere of Sirius A, A&A 528, 132

• 2011- : Accurate and precise age determinations for nearby open clusters
  Silaj & Landstreet 2014, Accurate age determinations of several nearby open clusters containing magnetic Ap stars, A&A 566, 132

• 2011- : Searches for and discovery of very weak (kG) fields in white dwarf stars
  Landstreet, Bagnulo et al 2012, On the incidence of weak magnetic fields in DA white dwarfs, A&A 545, 30
  Landstreet, Bagnulo, et al 2015, A novel and sensitive method for measuring very weak magnetic fields of DA white dwarfs. A search for a magnetic field at the 250 G level in 40 Eridani B, A&A 580, 120
  Landstreet, Bagnulo, Martin, Valyavin 2016, Discovery of an extremely weak magnetic field in the white dwarf LTT 16093 = WD 2047+372, A&A 591, 80;
  

• Major review articles
  

  Borra, Landstreet, Mestel 1982, Magnetic stars, Ann Rev Astr Ap 20, 191
  

  Landstreet 1992, Magnetic fields at the surfaces of stars, Astr Ap Rev 4, 35
  
  Mestel & Landstreet 2005, Stellar magnetic fields, in Cosmic magnetic fields, eds Wielebinski & Beck, Lecture Notes in Physics 664, 183
  
  Donati & Landstreet 2009, Magnetic fields of non-degenerate stars, Ann Rev Astr Ap 47, 333
  
  Bagnulo & Landstreet 2015, Stellar magnetic fields, in Polarimetry of Stars and Planetary Systems, eds Kolokolova, Hough, Levasseur-Regourd, CUP, 224
  

• And along the way a few other activities
  Chair, NSERC Grant Selection Committee 17, 1982-83
  
  President, Canada-France-Hawaii Telescope (CFHT) Scientific Advisory Council, 1983
  
  Faculty of Science Distinguished Research Professor, 1987-88
  
  Chair, Deaprtment of Astronomy, University of Western Ontario, 1992-96
  
  President, CFHT Board of Directors, 1996-98
  
  President, Canadian Astronomical Society, 1996-98
  
  Carlyle S. Beals Award, Canadian Astronomical Society, 2002
  
  Commission 36 (Theory of Stellar Atmospheres), Int. Astron. Union, President 2006-09
  
  Leverhulme Visiting Professor, Armagh Observatory, Armagh, N. Ireland 2010