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43 "Observational evidence for expansion in the SSS spectra of novae"
Ness, J.-U.
AN 331, 179
preprint astro-ph 0908.4549

42 "Evolution of X-ray spectra and light curves of V1494Aquilae"
Rohrbach, J.G., Ness, J.-U., Starrfield, S.
AJ 137, 4627
preprint astro-ph 0903.5386

41 "Swift X-ray and UV monitoring of the Classical Nova V458 Vul (Nova Vul 2007)"
Ness, J.-U., Drake, J.J., Beardmore, A.P., Boyd, D., Bode, M.F., Brady, S., Evans, P.A., Gaensicke, B.T., Kitamoto, S., Knigge, C., Miller, I., Osborne, J.P., Page, K.L., Rodriguez-Gil, P., Schwarz, G., Staels, B., Steeghs, D., Takei, D., Tsujimoto, M., Wesson, R., Zijlstra, A.
AJ 137, 4160
preprint astro-ph 0902.2199

40 "High-resolution X-ray spectroscopy of the evolving shock in the 2006 outburst of RS Ophiuchi"
Ness, J.-U., Drake, J.J., Starrfield, S., Bode, M.F., O'Brien, T.J., Evans, A., Eyres, S.P.S., Helton, L.A., Osborne, J.P., Page, K.L., Schneider, C., Woodward, C.E. 2008
AJ 137, 3414
preprint astro-ph 0810.2023

39 "V723 Cassiopeia still on in X-rays: A bright Super Soft Source 12 years after outburst"
Ness, J.-U., Schwarz, G., Starrfield, S., Osborne, J.P, Page, K.L., Beardmore, A.P., Wagner, R.M., and Woodward, C.E. 2008
AJ 135, 1328
preprint astro-ph 0801.3288

38 "The corona and upper transition region of ε Eridani"
Ness, J.-U. & Jordan, C. 2008
MNRAS, 385, 1691
preprint astro-ph 0711.3805
This is an electronic version of an article published in Monthly Notices of the Royal
Astronomical Society: complete citation information for the final version of the paper,
as published in the print edition of Monthly Notices of the Royal Astronomical Society,
is available on the Blackwell Synergy online delivery service, accessible via the journal's
website at http://www.blackwellpublishing.com/journals/MNR or http://www.blackwell-synergy.com"

37 "SSS phase of RS Ophiuchi observed with Chandra and XMM-Newton I.: Data and preliminary Models"
Ness, J.-U., Starrfield, S., Beardmore, A.P., Bode, M.F., Drake, J.J., Evans, A., Gehrz, R.D., Goad, M.R., Gonzalez-Riestra, R., Hauschildt, P., Krautter, J., O'Brien, T.J., Osborne, J.P., Page, K.L., Schönrich, R.A., Woodward, C.E. 2007,
ApJ 665, 1334
pdf version

36 "Swift X-ray Observations of Classical Novae"
Ness, J.-U., Schwarz, G., Retter, A., Starrfield, S., Schmitt, J.H.M.M., Gehrels, N., and Burrows, D. 2007,
ApJ 663, 505
pdf version
preprint astro-ph 0801.3288

35 "X-rays from Classical T Tauri Stars: Coronae or Accretion Shocks ?"
Ness, J.-U. and Schmitt, J.H.M.M. 2006,
Proceedings of WORKSHOP High resolution X-ray spectroscopy: towards XEUS and Con-X
pdf version

34 "V723 Cas: A dying nova or a new-born SSS?"
Ness, J.-U., Starrfield, S., and Schwarz, G. 2006,
Proceedings of WORKSHOP High resolution X-ray spectroscopy: towards XEUS and Con-X
pdf version

33 "Densities of stellar flares from spectral lines"
Mitra-Kreav, U. and Ness, J.-U. 2006,
Proceedings of WORKSHOP High resolution X-ray spectroscopy: towards XEUS and Con-X
pdf version

32 "Die explodierte Zigarre" (in German)
Steenken, N. and Ness, J.-U. 2005,
Sterne und Weltraum 12/05, page 68

31 "Anomalous X-ray line ratios in the cTTS TW Hya"
Ness, J.-U. and Schmitt, J.H.M.M. 2005,
A&A 444, L41 pdf version

30 "An X-ray emission line spectrum of Nova V382 Velorum 1999"
Ness, J.-U., Starrfield, S., Jordan, C. Krautter, J., Schmitt, J.H.M.M. 2005,
MNRAS 364, 1015 pdf version
This is an electronic version of an article published in Monthly Notices of the Royal
Astronomical Society: complete citation information for the final version of the paper,
as published in the print edition of Monthly Notices of the Royal Astronomical Society,
is available on the Blackwell Synergy online delivery service, accessible via the journal's
website at http://www.blackwellpublishing.com/journals/MNR or http://www.blackwell-synergy.com"

29 "Detection of X-ray emission from beta Pictoris with XMM-Newton:
a cool corona, a boundary layer or what?"
Hempel, M., Robrade, J., Ness, J.-U., Schmitt, J.H.M.M. 2005,
A&A 440, 727 pdf version

28 "On the nature of the X-ray source in GK Persei"
Vrielmann, S., Ness, J.-U., Schmitt, J.H.M.M. 2005,
A&A 439, 287 pdf version

27 "Spectral Indications of Density Variability in the Corona of AD Leonis"
Maggio, A. and Ness, J.-U. 2005,
ApJL 622, 57 pdf version

26 "X-rays from accretion shocks in T Tauri stars: The case of BP Tau"
Schmitt, J.H.M.M., Robrade, J., Ness, J.-U., Favata, F., and Stelzer, B. 2005,
A&AL 432, 35 pdf version

25 "Modeling CHANDRA low energy transmission grating spectrometer observations of classical novae with PHOENIX. I. V4743 Sagittarii"
Petz, A., Hauschildt, P.H., Ness, J.-U., and Starrfield, S. 2005,
A&AL 432, 35 pdf version

24 "The value of density measurements in stellar coronae"
Ness, J.-U. and Jordan, C. (pdf version)
Poster presentation AIP Conference Proceedings 774, 187
(XDAP workshop)

23 "X-rays of stellar Coronae with Chandra and XMM-Newton: densities and structures in stellar Coronae"
Ness, J.-U. Proceedings of the 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, 5 - 9 July 2004, Hamburg, Germany.
ESA Special Publications series (ESA SP-560), page 33 pdf version

22 "Advances of plasma diagnostics with high-resolution spectroscopy of stellar coronae"
Ness, J.-U.
Adv. in Space Research 38, 1494 (2006), DOI 10.1016/j.asr.2004.12.067)
pdf version

21 "On the sizes of stellar X-ray coronae"
Ness, J.-U., Güdel, M., Schmitt, J.H.M.M., Audard, M., and Telleschi, A. 2004,
A&A 427, 667 (2004) pdf version

20 "Is T Leonis a superoutbursting intermediate polar?"
Vrielmann, S., Ness, J.-U., and Schmitt, J.H.M.M.
A&A 419, 673 (2004) pdf version

19 "Detection of Saturnian X-ray emission with XMM-Newton"
Ness, J.-U., Schmitt, J.H.M.M., and Robrade, J.
A&AL 414, 49 (2004) pdf version

18 "X-ray emission from Saturn"
Ness, J.-U., Schmitt, J.H.M.M., Wolk, S.J., Dennerl, K., and Burwitz, V.
A&A 418, 337 (2004) pdf version

17 "High-resolution X-ray plasma diagnostics of stellar coronae in the XMM-Newton and Chandra era"
Ness, J.-U., Reviews in Modern Astronomy 17, 189-208 (2004)

16 "Coronal abundances from high-resolution X-ray data: The case of Algol"
J.H.M.M. Schmitt and Ness, J.-U.
A&A 415, 1099 (2004) pdf version

15 "Are stellar coronae optically thin in X-rays? -- A systematic investigation of opacity effects"
Ness, J.-U., Schmitt, J.H.M.M., Audard, M., Güdel, M., and Mewe, R. 2003,
A&A 407, 347; pdf version A&A online

14 "A Chandra LETGS observation of V4743 Sgr: A Super Soft X-ray Source and a Violently Variable Light Curve"
Ness, J.-U., Starrfield, S., Burwitz, V., Wichmann, R., Hauschildt, P., Drake, J.J., Krautter, J., Orio, M., Hernanz, M., Gehrz, R.D, Woodward, C.E., Butt, Y., Mukai, K., Balman, S., and Truran, J.W. 2003
ApJL 594, 127 (2003); pdf version; ApJL online

13 "A spatially resolved limb flare on Algol B observed with XMM-Newton"
J.H.M.M. Schmitt, Ness, J.-U., and Franco, G.,
A&A 412, 849 (2003) pdf version

12 "Modeling the NeIX Triplet Spectral Region of Capella with the Chandra and XMM-Newton Gratings"
Ness, J.-U., Brickhouse, N.S., Drake, J.J., and Huenemoerder, D.P., 2003
ApJ 598, 1277 pdf version

11 "Coronal densities and temperatures for cool stars in different stages of activity"
Ness, J.-U., Audard, M., Schmitt, J.H.M.M., and Güdel, M.
Adv. Space Res. Vol. 32, No. 6, 937(2003)

10 "Coronal density diagnostics with Helium-like triplets:
CHANDRA--LETGS observations of Algol, Capella, Procyon, Epsilon Eri, Alpha Cen A&B, UX Ari, AD Leo, YY Gem, and HR 1099"
Ness, J.-U., Schmitt, J.H.M.M., Burwitz, V., Mewe, R., Raassen, A.J.J., van der Meer, R.L.J., Predehl, P., and Brinkman, A.C. 2002,
A&A 394, 911

9 "CORA: Emission line fitting with Maximum Likelihood"
Ness, J.-U. and Wichmann, R. 2002,
Astron. Nachr. 323, 129

8 "High-resolution X-ray plasma diagnostics of stellar coronae"
PhD Thesis, Januar (2002);alternatively from Staats- und Universitätsbibliothek Hamburg

7 "Chandra LETGS Observation of the Active Binary Algol"
Ness, J.-U., Schmitt, J.H.M.M., Burwitz, V., Mewe, R., and Predehl, P. 2002,
A&A 387, 1032

6 "Influence of radiation fields on He-like density diagnostics"
(Viewgraphs for talk at Cool Stars Workshop 12 in Boulder, Colorado, USA)
Ness, J.-U., Mewe, R., Schmitt, J.H.M.M., and Raassen, A.J.J.
In: "The Future of Cool-Star Astrophysics", 2003, Eds. A. Brown, G.M. Harper, & T.R. Ayres
Proceedings of 12th Cambridge Workshop on Cool Stars, Stellar Systems, & The Sun, Univ. Colorado, P.255-264 (PDF version)

5 "Influence of radiation fields on plasma density diagnostics"
(Poster for Stellar Coronae 2001) (PDF version)
Ness, J.-U., Mewe, R., Schmitt, J.H.M.M., and Raassen, A.J.J. In: F.Favata and J.J. Drake (eds.): ASP Conf Ser. 277, 545 (2002)

4 "Coronal density diagnostics with He-like triplets using Chandra LETGS"
(Viewgraphs for talk at Stellar Coronae 2001)
Ness, J.-U., Mewe, R., Schmitt, J.H.M.M., Raassen, A.J.J., van der Meer, R.L.J., Burwitz, V., Predehl, P, and Brinkman, A.C.
In: F.Favata and J.J. Drake (eds.): ASP Conf Ser. 277, 127 (2002)

3: "Helium-like triplet density diagnostics:
Applications to CHANDRA-LETGS X-ray observations of Capella and Procyon "
Ness, J.-U., Mewe, R., Schmitt, J.H.M.M, Raassen, A.J.J., Porquet, D., Kaastra, J.S., van der Meer, R.L.J., Burwitz, V., and Predehl, P. 2001
A&A, 367, 282

2: "A Search for X-ray emission from Saturn, Uranus and Neptune"
Ness, J.-U. and Schmitt, J.H.M.M. 2000,
A&A 355, 394 pdf version

1: "Wechselwirkung unterschiedlich großer Galaxien und dadurch induzierte Sternentstehung"
Ness, J.-U. Diplomarbeit 1998, Institut für Theoretische Physik und Astrophysik der Christian-Albrechts Universität Kiel