RT Journal Article T1 Fundamental problems in astrophysics A1 Gómez De Castro, Ana Inés A1 Wamsteker, Willem A1 Barstow, Martin A1 Brosch, Noah A1 Kappelmann, Norbert A1 Kollatschny, Wolfram A1 De Martino, Domitilla A1 Pagano, Isabella A1 Des Etangs, Alain Lecavelier A1 Ehenreich, David A1 Reimers, Dieter A1 González Delgado, Rosa A1 Najarro, Francisco A1 Linsky, Jeff AB Progress of modern astrophysics requires the access to the electromagnetic spectrum in the broadest energy range. The Ultraviolet is a fundamental energy domain since it is one of the most powerful tool to study plasmas at temperatures in the 3,000-300,000 K range as well as electronic transitions of the most abundant molecules in the Universe. Moreover, the UV radiation field is a powerful astrochemical and photoionizing agent. The objective of this review is to describe the crucial issues that require access to the UV range. A summary has been added to the end with a more classic view of UV needs by astronomical object type; this approach is followed at length in the rest of the contributions of this issue. PB Springer SN 0004-640X YR 2006 FD 2006-06 LK https://hdl.handle.net/20.500.14352/50063 UL https://hdl.handle.net/20.500.14352/50063 LA eng NO Gómez De Castro, A. I., Wamsteker, W., Barstow, M. et al. «Fundamental Problems in Astrophysics». Astrophysics and Space Science, vol. 303, n.o 1-4, junio de 2006, pp. 133-45. DOI.org (Crossref), https://doi.org/10.1007/s10509-006-9057-4. DS Docta Complutense RD 8 abr 2025