Extreme relativistic reflection in the active galaxy ESO 033-G002 (2021) Walton DJ, Balokovic M, Fabian AC, Gallo LC, Koss M, Nardini E, Reynolds CS, et al. Journal article Nitrogen X-ray absorption in the local ISM (2021) Gatuzz E, Garcia J, Kallman TR Journal article RX J0529.8-6556: A BeXRB pulsar with an evolving optical period and out of phase X-ray outbursts (2021) Treiber H, Vasilopoulos G, Bailyn CD, Haberl F, Gendreau KC, Ray PS, Maitra C, et al. Journal article Explaining the extended GeV gamma-ray emission adjacent to HESS J1825-137 (2021) Collins T, Rowell G, Mitchell AMW, Voisin F, Fukui Y, Sano H, Alsulami R, Einecke S Journal article, Original article XMMU J050722.1-684758: Discovery of a new Be X-ray binary pulsar likely associated with the supernova remnant MCSNR J0507-6847 (2021) Maitra C, Haberl F, Maggi P, Kavanagh PJ, Vasilopoulos G, Sasaki M, Filipovic MD, Udalski A Journal article Using interstellar clouds to search for Galactic PeVatrons: Gamma-ray signatures from supernova remnants (2021) Mitchell AMW, Rowell GP, Celli S, Einecke S Journal article, Original article Space observations of AA Doradus provide consistent mass determinations. New HW-Vir systems observed with TESS (2021) Baran AS, Ostensen RH, Heber U, Irrgang A, Sanjayan S, Telting JH, Reed MD, Ostrowski J Journal article, Review article A quantitative in-depth analysis of the prototype sdB plus BD system SDSS J08205+0008 revisited in the Gaia era (2021) Schaffenroth V, Casewell SL, Schneider D, Kilkenny D, Geier S, Heber U, Irrgang A, et al. Journal article Constraining the contribution of Gamma-Ray Bursts to the high-energy diffuse neutrino flux with 10 yr of ANTARES data (2021) Albert A, Andre M, Anghinolfi M, Anton G, Ardid M, Aubert JJ, Aublin J, et al. Journal article Modelling X-ray RMS spectra II: the ultrafast outflow of PDS 456 (2021) Härer L, Parker ML, Joyce A, Igo Z, Alston WN, Furst F, Lobban AP, et al. Journal article