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Dzib, S. A.; Rodríguez, L. F.: Radio Proper Motions of the Energetic Pulsar PSR J1813-1749. \apj 923 (2), 228, p. 228 (2021)

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Harper, G. M.; Chambers, E.; Vacca, W. D.; Wiesemeyer, H.; Fadda, D.; DeWitt, C.; Wasatonic, R.; Richards, A. M.S.; Ryde, N.; Fischer, C. et al.; Richter, M. J.; Guinan, E. F.; Minchin, R.; Graf, U. U.; Colditz, S.: SOFIA upGREAT/FIFI-LS Emission-line Observations of Betelgeuse during the Great Dimming of 2019/2020. \aj 162 (6), 246, p. 246 (2021)

Hilmarsson, G.H.; Spitler, L.G.; Main, R.A.; Li, D.Z.: Polarization properties of FRB 20201124A from detections with the Effelsberg 100-m radio telescope. \mnras 508 (4), pp. 5354 - 5361 (2021)

Homan, D.C.; Cohen, M.H.; Hovatta, T.; Kellermann, K.I.; Kovalev, Y.Y.; Lister, M.L.; Popkov, A.V.; Pushkarev, A.B.; Ros, E.; Savolainen, T.: MOJAVE. XIX. Brightness Temperatures and Intrinsic Properties of Blazar Jets. \apj 923 (1), 67, p. 67 (2021)

Johnson, M. D.; Kovalev, Y. Y.; Lisakov, M. M.; Voitsik, P. A.; Gwinn, C. R.; Bruni, G.: First Space-VLBI Observations of Sagittarius A*. \apjl 922 (2), L28, p. L28 (2021)

Kadler, M.; Benke, P.; Gokus, A.; Hessdoerfer, J.; Sinapius, J.; Weber, P.; Tornikoski, M.; Righini, S.; Marchili, N.; Hovatta, T. et al.; Readhead, A. C.; Kiehlmann, S.; Kovalev, Y. A.; Popkov, A. V.; Kovalev, Y. Y.; Amp; TELAMON Team: TELAMON, Metsahovi, Medicina, OVRO and RATAN-600 programs find a long-term radio flare in PKS0735+17 coincident with IceCube-211208A. The Astronomer's Telegram 15105, p. 1 (2021)

Komossa, S.; Grupe, D.; Gallo, L.C.; Gonzalez, A.; Yao, S.; Hollett, A.R.; Parker, M.L.; Ciprini, S.: MOMO. IV. The Complete Swift X-Ray and UV/Optical Light Curve and Characteristic Variability of the Blazar OJ 287 during the Last Two Decades. \apj 923 (1), 51, p. 51 (2021)

Komossa, S.; Grupe, D.; Valtonen, M.: Swift detection of the blazar OJ 287 in a deep UV-optical low-state in the course of the MOMO program. The Astronomer's Telegram 15145, p. 1 (2021)

Kramer, J. A.; MacDonald, N. R.: Ray-tracing in relativistic jet simulations: A polarimetric study of magnetic field morphology and electron scaling relations. åp 656, A143, p. A143 (2021)

Leisman, L.; Rhode, K. L.; Ball, C.; Pagel, H. J.; Cannon, J. M.; Salzer, J. J.; Janowiecki, S.; Janesh, W. F.; Józsa, G. I.-G.; Giovanelli, R. et al.; Haynes, M. P.; Adams, E. A.-K.; Gray, L.; Smith, N. J.: The ALFALFA Almost Dark Galaxy AGC 229101: A 2 Billion Solar Mass H I Cloud with a Very Low Surface Brightness Optical Counterpart. \aj 162 (6), 274, p. 274 (2021)

Lister, M.L.; Homan, D.C.; Kellermann, K.I.; Kovalev, Y.Y.; Pushkarev, A.B.; Ros, E.; Savolainen, T.: Monitoring Of Jets in Active Galactic Nuclei with VLBA Experiments. XVIII. Kinematics and Inner Jet Evolution of Bright Radio-loud Active Galaxies. \apj 923 (1), 30, p. 30 (2021)

Lopez-Rodriguez, E.; Beck, R.; Clark, S. E.; Hughes, A.; Borlaff, A. S.; Ntormousi, E.; Grosset, L.; Tassis, K.; Beckman, J. E.; Subramanian, K. et al.; Dale, D.; Díaz-Santos, T.: Extragalactic Magnetism with SOFIA (Legacy Program) - II: A Magnetically Driven Flow in the Starburst Ring of NGC 1097. \apj 923 (2), 150, p. 150 (2021)

Lower, M.E.; Johnston, S.; Dunn, L.; Shannon, R.M.; Bailes, M.; Dai, S.; Kerr, M.; Manchester, R.N.; Melatos, A.; Oswald, L.S. et al.; Parthasarathy, A.; Sobey, C.; Weltevrede, P.: The impact of glitches on young pulsar rotational evolution. \mnras 508 (3), pp. 3251 - 3274 (2021)

Martín, S.; Mangum, J.G.; Harada, N.; Costagliola, F.; Sakamoto, K.; Muller, S.; Aladro, R.; Tanaka, K.; Yoshimura, Y.; Nakanishi, K. et al.; Herrero-Illana, R.; Mühle, S.; Aalto, S.; Behrens, E.; Colzi, L.; Emig, K.L.; Fuller, G.A.; García-Burillo, S.; Greve, T.R.; Henkel, C.; Holdship, J.; Humire, P.; Hunt, L.; Izumi, T.; Kohno, K.; König, S.; Meier, D.S.; Nakajima, T.; Nishimura, Y.; Padovani, M.; Rivilla, V.M.; Takano, S.; van der Werf, P.P.; Viti, S.; Yan, Y.T.: ALCHEMI, an ALMA Comprehensive High-resolution Extragalactic Molecular Inventory. Survey presentation and first results from the ACA array. åp 656, A46, p. A46 (2021)

Mazumdar, P.; Wyrowski, F.; Urquhart, J.S.; Colombo, D.; Menten, K.M.; Neupane, S.; Thompson, M.A.: High resolution LAsMA12CO and 13CO observation of the G305 giant molecular cloud complex. II. Effect of feedback on clump properties. åp 656, A101, p. A101 (2021)

Molera Calvés, G.; Pogrebenko, S.V.; Wagner, J.F.; Cimò, G.; Gurvits, L.I.; Bocanegra-Bahamón, T.M.; Duev, D.A.; Nunes, N.V.: High spectral resolution multi-tone Spacecraft Doppler tracking software: Algorithms and implementations. \pasa 38, e065, p. e065 (2021)

Peißker, F.; Zajaček, M.; Eckart, A.; Ali, B.; Karas, V.; Sabha, N. B.; Grellmann, R.; Labadie, L.; Shahzamanian, B.: The Apparent Tail of the Galactic Center Object G2/DSO. \apj 923 (1), 69, p. 69 (2021)