Bild von Jan-Uwe Ness
and a little Jan with Great Aunt

Dr. Jan-Uwe Ness

European Space Agency (ESA)
European Space Astronomy Centre (ESAC)
Camino Bajo del Castillo s/n
Urb. Villafranca del Castillo
28692 Villanueva de la Cañada, MADRID

Phone: +34-918131-436
e-mail : juness +
public PGP key
ORCID: 0000-0003-0440-7193

Projects at ESA: Personal ESA Web Page at ESAC Science Faculty

CV with publications

New Organ from Johannus

here some recordings
Visit to Magdeburg Cathedral Nov. 19 2021

Career, milestones

  1. Current Position at European Space Agence (ESA) since December 2008.
    Science Operations for the Astrophysics missions XMM-Newton and INTEGRAL.
    Research Fellowship Coordinator
  2. 2008: Awarded of a Ramon y Cajal Fellowship for research in Physics and Astronomy in Spain.
    Out of over 200 applications, I have ranked 9th, but have chosen the current ESA position.
  3. January 2006 - November 2008: Chandra Fellowship at Arizona State University with Prof. Sumner Starrfield.
  4. August 2004 - December 2005: Post-doc position at the University of Oxford, worked with Prof. Dame Carole Jordan on X-ray and UV spectroscopy of Stellar Coronae.
  5. 1999-2002: PhD degree on High-Resolution X-ray Spectroscopy of Stellar Coronae at Hamburger Sternwarte, the observatory of the University of Hamburg, Germany. Supervised by Prof. Jürgen H.M.M. Schmitt.
  6. 1998/99: Diploma Thesis on computer simulations of interacting Galaxies at University of Kiel, Germany, supervised by Prof. Gerhard Hensler.

Latest result

Published in Ness et al. 2022 (A&A 658, 169)

Spectral Time Map of XMM-Newton RGS spectrum of the Recurrent Nova V3890 Sgr (1962, 1990, 2019). The four panels share x/y axes as follows:

1) Top left: photon flux versus wavelength: Average spectrum (black line with blackbody approximation with red dotted line) and two spectra extracted from different time intervals (see below)

2) Top right: Colour code along photon flux axis used in:

3) Bottom left: Time (from top down) versus wavelength: Time resolved spectra, the colours correspond to photon fluxes as in top right panel. Horizontal dashed lines mark the time intervals over which the shaded spectra of same colour in the top left panel are integrated

4) Bottom right: Light curve turned around by 90 degrees with time along same axis as 3) and count rate horizontally. The shaded areas mark the time intervals over which the shaded spectra of same colour in the top left panel are integrated

Research Interests in a nutshell


Cora line fitting programme


All Publications
Past year (Pre-print Server astro-ph)
All publications (external link: ADS)
All publications found by GoogleScholar, sorted by number of found citations.

Personal Information:

...and my Camaro in Arizona:

(click on image to enlarge)

Last modified by juness +