Tuorla Observatory
- Unambiguous radio detection of the tidal disruption event AT2019dsg with e-MERLIN (2019)
- Uncovering the geometry of the hot X-ray corona in the Seyfert galaxy NGC 4151 with IXPE (2023)
- Unelmien siivet (2018)
- Unfolding the organised irresponsibility: Ecosystem approach and the quest for forest biodiversity in Finland, Peru, and Russia (2011)
- Unprecedented gamma-ray flare from PG1553+113 in spring 2012 (2012)
- Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010 (2015)
- Unraveling the Complex Behavior of Mrk 421 with Simultaneous X-Ray and VHE Observations during an Extreme Flaring Activity in 2013 April* (2020)
- Unraveling the Infrared Transient VVV-WIT-06: The Case for the Origin as a Classical Nova (2018)
- Unusual A2142 supercluster with a collapsing core: distribution of light and mass (2015)
- Unveiling the AGN in IC 883: discovery of a parsec-scale radio jet (2017)