Reviews of topical problems

B.P. Filippov “Mass ejections from the solar atmosphere” Phys. Usp. 62 847–864 (2019)

L.V. Kulik, A.V. Gorbunov, S.M. Dickmann, V.B. Timofeev “Spin excitations in two-dimensional electron gas, their relaxation, photoexcitation and detection methods, and the role of Coulomb correlations” Phys. Usp. 62 865–891 (2019)

I.S. Aranson “Topological defects in active liquid crystals” Phys. Usp. 62 892–909 (2019)

Physics of our days

M.I. Vysotsky, E.V. Zhemchugov “Equivalent photons in proton and ion—ion collisions at the LHC” Phys. Usp. 62 910–919 (2019)

B. Heinemann, Y. Nir “The Higgs program and open questions in particle physics and cosmology” Phys. Usp. 62 920–930 (2019)

Instruments and methods of investigation

A. Khorshidi “Molybdenum-99 production via lead and bismuth moderators and milli-structure-⁹⁸Mo samples by indirect production technique using Monte Carlo method” Phys. Usp. 62 931–940 (2019)

Personalia

G.P. Vyatkin, L.B. Glebov, A.E. Kaplan, D.A. Kompaneets, N.D. Kundikova, G.A. Mesyats, L.P. Pitaevskii, B.E.A. Saley, M.J. Soileau, R.A. Sunyaev, N.V. Tabiryan, V.V. Shkunov “In memory of Boris Yakovlevich Zeldovich” Phys. Usp. 62 941–942 (2019)

A.F. Andreev, E.P. Velikhov, M.V. Kovalchuk, V.Ya. Panchenko, L.P. Pitaevskii, O.V. Rudenko, A.Yu. Rumyantsev, M.V. Sadovskii, A.M. Sergeev, V.B. Timofeev, I.A. Shcherbakov, G.M. Eliashberg “In memory of Yurii Moiseevich Kagan” Phys. Usp. 62 943–944 (2019)

V.A. Stefan “In memory of Murray Gell-Mann” Phys. Usp. 62 945–947 (2019)

Letters to the editors

V.G. Plekhanov “Necessary additions to the paper by Yu.M. Tsipenyuk [Phys. Usp. 55 796 (2012)] and to the review by B.A. Knyazev, V.G. Serbo [Phys. Usp. 61 449 (2018)]” Phys. Usp. 62 947–948 (2019)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet (based on electronic preprints)” Phys. Usp. 62 949–950 (2019)