Steen Harle Hansen

Research output

Research output per year 1999 2007 2009 2010 2012 2019

• 40 Journal article
• 1 Ph.D. thesis
• 1 Report chapter
• 1 Conference abstract for conference
• 2 More
  • 1 Letter
  • 1 Other contribution

Research output per year

Research output per year

Search results

• 2019

  Estimating the dark matter velocity anisotropy to the cluster edge

  Svensmark, J., Hansen, S. H., Martizzi, D., Moore, B. & Teyssier, R., 8 Apr 2019, In: arXiv.

  Research output: Contribution to journal › Journal article › Research

• Why is centripetal acceleration v^2/r? Students’ struggles and preferences after seeing different derivations

  Vedel, S., Avelar Sotomaior Karam, R. & Hansen, S. H., 2 Jul 2019, p. 289-290.

  Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  • physics 100%
  • student 87%
  • interview 50%
• 2018

  The structure and assembly history of cluster-sized haloes in self-interacting dark matter

  Brinckmann, T., Zavala, J., Rapetti, D., Hansen, S. H. & Vogelsberger, M., 11 Feb 2018, In: Monthly Notices of the Royal Astronomical Society. 474, 1, p. 746-759

  Research output: Contribution to journal › Journal article › Research › peer-review

  • halos 100%
  • dark matter 95%
  • assembly 93%
  • histories 89%
  • history 61%
  20 Citations (Scopus)
• 2017

  Analytical derivation of the radial distribution function in spherical dark matter haloes

  Eilersen, A., Hansen, S. H. & Zhang, X., 1 May 2017, In: Monthly Notices of the Royal Astronomical Society. 467, 2, p. 2061-2065

  Research output: Contribution to journal › Journal article › Research › peer-review

  • radial distribution 100%
  • halos 87%
  • dark matter 84%
  • derivation 81%
  • distribution functions 76%
  1 Citation (Scopus)

• A White Paper on keV sterile neutrino Dark Matter

  Adhikari, R., Agostini, M., Ky, N. A., Araki, T., Archidiacono, M., Bahr, M., Baur, J., Behrens, J., Bezrukov, F., Dev, P. S. B., Borah, D., Boyarsky, A., de Gouvea, A., Pires, C. A. D. S., de Vega, H. J., Dias, A. G., Di Bari, P., Djurcic, Z., Dolde, K., Dorrer, H., & 116 othersDurero, M., Dragoun, O., Drewes, M., Drexlin, G., Duellmann, C. E., Eberhardt, K., Eliseev, S., Enss, C., Evans, N. W., Faessler, A., Filianin, P., Fischer, V., Fleischmann, A., Formaggio, J. A., Franse, J., Fraenkle, F. M., Frenk, C. S., Fuller, G., Gastaldo, L., Garzilli, A., Giunti, C., Glueck, F., Goodman, M. C., Gonzalez-Garcia, M. C., Gorbunov, D., Hamann, J., Hannen, V., Hannestad, S., Hansen, S. H., Hassel, C., Heeck, J., Hofmann, F., Houdy, T., Huber, A., Iakubovskyi, D., Lanni, A., Ibarra, A., Jacobsson, R., Jeltema, T., Jochum, J., Kempf, S., Kieck, T., Korzeczek, M., Kornoukhov, V., Lachenmaier, T., Laine, M., Langacker, P., Lasserre, T., Lesgourgues, J., Lhuillier, D., Li, Y. F., Liao, W., Long, A. W., Maltoni, M., Mangano, G., Mavromatos, N. E., Menci, N., Merle, A., Mertens, S., Mirizzi, A., Monrea, B., Nozik, A., Neronov, A., Niro, V., Novikov, Y., Oberauer, L., Otten, E., Palanque-Delabrouille, N., Pallavicini, M., Pantuev, V. S., Papastergis, E., Parke, S., Pascoli, S., Pastor, S., Patwardhan, A., Pilaftsis, A., Radford, D. C., Ranitzsch, P. C. -O., Rest, O., Robinson, D. J., Rodrigues da Silva, P. S., Ruchayskiy, O., Sanchez, N. G., Sasaki, M., Saviano, N., Schneider, A., Schneider, F., Schwetz, T., Schoenert, S., Scholl, S., Shankar, F., Shrock, R., Steinbrink, N., Strigari, L., Suekane, F., Suerfu, B., Takahashi, R., Thi Hong Van, N., Tkachev, I., Totzauer, M., Tsai, Y., Tully, C. G., Valerius, K., Valle, J. W. F., Venos, D., Viel, M., Vivier, M., Wang, M. Y., Weinheimer, C., Wendt, K., Winslow, L., Wolf, J., Wurm, M., Xing, Z., Zhou, S. & Zuber, K., 13 Jan 2017, In: Journal of Cosmology and Astroparticle Physics. 2017, 1

  Research output: Contribution to journal › Journal article › Research › peer-review

  • dark matter 100%
  • neutrinos 95%
  • astrophysics 57%
  • physics 51%
  • cosmology 31%
  201 Citations (Scopus)

• Infall near clusters of galaxies: comparing gas and dark matter velocity profiles

  Albæk, L., Hansen, S. H., Martizzi, D., Moore, B. & Teyssier, R., 1 Dec 2017, In: Monthly Notices of the Royal Astronomical Society. 472, 3, p. 3486-3491

  Research output: Contribution to journal › Journal article › Research › peer-review

  • velocity profile 100%
  • dark matter 88%
  • velocity distribution 79%
  • galaxies 74%
  • radii 62%
  2 Citations (Scopus)
• 2016

  A facility to search for hidden particles at the CERN SPS: the SHiP physics case

  Alekhin, S., Altmannshofer, W., Asaka, T., Batell, B., Bezrukov, F., Bondarenko, K., Boyarsky, A., Choi, K-Y., de Gouvea, A., Garbrecht, B., Gavela, B., Gorbunov, D., Gori, S., Grojean, C., Guffanti, A., Hambye, T., Hansen, S. H., Helo, J. C., Hernandez, P., Ivashko, A., & 28 othersJaeckel, J., Kahlhoefer, F., Mccullough, M., McKeen, D., Mitselmakher, G., Moch, S-O., Mohapatra, R. N., Morrissey, D. E., Ovchynnikov, M., Pilaftsis, A., Reno, M. H., Ritz, A., Roszkowski, L., Rubakov, V., Ruchayskiy, O., Schienbein, I., Schmeier, D., Schmidt-Hoberg, K., Schwaller, P., Seto, O., Shaposhnikov, M., Spannowsky, M., Tramontano, F., Tripathi, A., Tulin, S., Vissani, F., Winkler, M. W. & Zurek, K. M., 24 Oct 2016, In: Reports on Progress in Physics. 79, 12, 124201.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • physics 100%
  • leptons 36%
  • dark matter 34%
  • neutrinos 32%
  • proton beams 20%
  380 Citations (Scopus)

• Zeldovich pancakes in observational data are cold

  Brinckmann, T., Lindholmer, M., Hansen, S. & Falco, M., 5 Apr 2016, In: Journal of Cosmology and Astroparticle Physics. 2016, 4, 007.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • galaxies 100%
  • filaments 47%
  • universe 44%
  • coma 33%
  • estimating 24%
  4 Citations (Scopus)
• 2015

  Effect of asphericity in caustic mass estimates of galaxy clusters

  Svensmark, J., Wojtak, R. & Hansen, S. H., 20 Jan 2015, In: Monthly Notices of the Royal Astronomical Society. 448, 2, p. 1644-1659

  Research output: Contribution to journal › Journal article › Research › peer-review

  • asphericity 100%
  • alkalies 66%
  • galaxies 50%
  • estimates 40%
  • effect 16%
  13 Citations (Scopus)

• Zeldovich pancakes at redshift zero: the equilibration state and phase-space properties

  Wadekar, D. & Hansen, S. H., 21 Feb 2015, In: Monthly Notices of the Royal Astronomical Society. 447, 2, p. 1333-1340

  Research output: Contribution to journal › Journal article › Research › peer-review

  • determination method 100%
  • galaxies 84%
  • webs (sheets) 82%
  • simulation 67%
  • distribution functions 60%
  2 Citations (Scopus)
• 2014

  A new method to measure the mass of galaxy clusters

  Falco, M., Hansen, S. H., Wojtak, R., Brinckmann, T., Lindholmer, M. & Pandolfi, S., Jun 2014, In: Monthly Notices of the Royal Astronomical Society. 442, 2, p. 1887-1896

  Research output: Contribution to journal › Journal article › Research › peer-review

  • galaxies 100%
  • coma 41%
  • method 30%
  • filaments 14%
  • universe 13%
  30 Citations (Scopus)

• Particle ejection during mergers of dark matter halos

  Carucci, I. P., Sparre, M., Hansen, S. H. & Joyce, M., 1 Jun 2014, In: Journal of Cosmology and Astroparticle Physics. 2014, 6, 057.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • ejection 100%
  • halos 87%
  • dark matter 83%
  • escape velocity 27%
  • potential fields 21%
  4 Citations (Scopus)

• Stirring N-body systems - II. Necessary conditions for the dark matter attractor

  Barber, J. A., Hongsheng, Z. & Hansen, S. H., 1 May 2014, In: Monthly Notices of the Royal Astronomical Society. 440, 2, p. 1044-1051

  Research output: Contribution to journal › Journal article › Research › peer-review

  • stirring 100%
  • dark matter 74%
  • perturbation 68%
  • energy transfer 42%
  • energy 41%
• 2013

  Dynamical signatures of infall around galaxy clusters: a generalized Jeans equation

  Falco, M., Mamon, G. A., Wojtak, R., Hansen, S. H. & Gottloeber, S., 1 Dec 2013, In: Monthly Notices of the Royal Astronomical Society. 436, 3, p. 2639-2649

  Research output: Contribution to journal › Journal article › Research › peer-review

  • halos 100%
  • radial velocity 88%
  • signatures 88%
  • galaxies 80%
  • radii 54%
  15 Citations (Scopus)

• Why does the Jeans Swindle work?

  Falco, M., Hansen, S. H. & Mamon, G. A., 1 May 2013, In: Monthly Notices of the Royal Astronomical Society. 431, 1, p. L6-L9

  Research output: Contribution to journal › Journal article › Research › peer-review

  • profiles 100%
  • kinematics 78%
  • universe 74%
  • measuring 62%
  • expansion 57%
  16 Citations (Scopus)
• 2012

  A Derivation of (Half) the Dark Matter Distribution Function

  Hansen, S. H. & Sparre, M., 1 Sept 2012, In: Astrophysical Journal. 756, 1, p. 100

  Research output: Contribution to journal › Journal article › Research › peer-review

  • dark matter 100%
  • derivation 96%
  • distribution functions 90%
  • velocity distribution 89%
  • radial velocity 87%
  3 Citations (Scopus)

• An attractor for the dynamical state of the intracluster medium

  Juncher, D., Hansen, S. H. & Macciò, A. V., 20 Feb 2012, In: Astrophysical Journal Letters. 746, 2, p. L28 5 p.

  Research output: Contribution to journal › Letter › peer-review

  • galaxies 100%
  • cosmology 50%
  • intergalactic media 42%
  • temperature 38%
  • profiles 37%
  1 Citation (Scopus)

• Asymmetric velocity anisotropies in remnants of collisionless mergers

  Sparre, M. & Hansen, S. H., 1 Jul 2012, In: Journal of Cosmology and Astroparticle Physics. 2012, 7, p. 042

  Research output: Contribution to journal › Journal article › Research › peer-review

  • halos 100%
  • anisotropy 69%
  • dark matter 38%
  • simulation 33%
  • radial velocity 22%
  8 Citations (Scopus)

• Measuring the Three-dimensional Shape of X-Ray Clusters

  Samsing, J. G. M., Skielboe, A. & Hansen, S. H., 20 Mar 2012, In: Astrophysical Journal. 748, 1, p. 21

  Research output: Contribution to journal › Journal article › Research › peer-review

  • measuring 100%
  • x rays 66%
  • gas 52%
  • gases 45%
  • profiles 24%
  7 Citations (Scopus)

• Stirring N-body systems: universality of end states

  Barber, J. A., Zhao, H., Wu, X. & Hansen, S. H., 11 Aug 2012, In: Monthly Notices of the Royal Astronomical Society. 424, 3, p. 1737-1751 14 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • stirring 100%
  • perturbation 68%
  • environmental conditions 22%
  • orbits 20%
  • effect 13%
  4 Citations (Scopus)

• The behaviour of shape and velocity anisotropy in dark matter haloes

  Sparre, M. & Hansen, S. H., 31 Oct 2012, In: Journal of Cosmology and Astroparticle Physics. 2012, 10, p. 049

  Research output: Contribution to journal › Journal article › Research › peer-review

  • halos 100%
  • dark matter 95%
  • anisotropy 69%
  • cones 47%
  • profiles 44%
  19 Citations (Scopus)
• 2011

  A Detailed Statistical Analysis of the Mass Profiles of Galaxy Clusters

  Host, O. & Hansen, S. H., 20 Jul 2011, In: Astrophysical Journal. 736, 1, p. 52

  Research output: Contribution to journal › Journal article › Research › peer-review

  • statistical analysis 100%
  • galaxies 70%
  • profiles 52%
  • halos 29%
  • parameter 27%
  16 Citations (Scopus)

• Gravitational redshift of galaxies in clusters as predicted by general relativity

  Wojtak, R., Hansen, S. H. & Hjorth, J., 29 Sept 2011, In: Nature. 477, 7366, p. 567-569

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Galaxies 100%
  • Cold Temperature 53%
  • Gravitation 34%
  • Acceleration 29%
  • Cluster Analysis 26%
  74 Citations (Scopus)

• The Temperature of Hot Gas in Galaxies and Clusters: Baryons Dancing to the Tune of Dark Matter

  Hansen, S. H., Macció, A. V., Romano-Diaz, E., Hoffman, Y., Brüggen, M., Scannapieco, E. & Stinson, G. S., 10 Jun 2011, In: Astrophysical Journal. 734, 1, p. 62 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • high temperature gases 100%
  • baryons 79%
  • dark matter 75%
  • galaxies 63%
  • gas 44%
  8 Citations (Scopus)
• 2010

  An attractor for dark matter structures

  Hansen, S. H., Juncher, D. & Sparre, M., 1 Aug 2010, In: Astrophysical Journal Letters. 718, 2, p. L68-L72 4 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • dark matter 100%
  • merger 48%
  • profiles 46%
  • freedom 39%
  • accretion 35%
  17 Citations (Scopus)

• Confronting theory with observations: A UniverseNet Cosmology Workshop, August 16-20

  Bergström... [et al.], L., Bjerrum-Bohr, N. E. J., Butt, S., Christensen, P. R., Damgaard, P. H., Collins, H. S., Fynbo, J. P. U., Geier, S. J., Hansen, S. H., James, J. B., Kim, J., Li, X., Man, W. S., Nasselski, P., Nesseris, S. & Olesen, P., 16 Jul 2010, København

  Research output: Other contribution › Research

• Searching for dark matter in X-rays: how to check the dark matter origin of a spectral feature

  Boyarsky, A., Ruchayskiy, O., Iakubovskyi, D., Walker, M. G., Riemer-Sørensen, S. & Hansen, S. H., 11 Sept 2010, In: Monthly Notices of the Royal Astronomical Society. 407, 2, p. 1188-1202 14 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • dark matter 100%
  • exclusion 63%
  • x rays 51%
  • dwarf galaxies 43%
  • decay 27%
  30 Citations (Scopus)

• Spaatind 2010, Nordic conference in partcle physics

  Aasvold...[et al.], A., Andersen, M. S., Badensø, M., Damgaard, P. H., Dam, M., Gregersen, K. A., Hansen, J. B., Hansen, P. H., Jørgensen, M. D., Hansen, S. H., Heisterkamp, S. J. F. & Nielsen, H. F. B., 2 Jan 2010, Bi-annual Nordic Conference in Particle Physics . 21st. ed. 2-8 January 2010 Spaatind, Norway

  Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research
• 2009

  Dark matter angular momentum profile from the Jeans equation

  Schmidt, K. B., Hansen, S. H., An, J. H., Williams, L. L. R. & Macci'o, A. V., 2009, In: Astrophysical Journal. 694, 2, p. 893-901

  Research output: Contribution to journal › Journal article › Research › peer-review

  2 Citations (Scopus)

• Decaying dark matter in the draco dwarf galaxy

  Riemer-Sørensen, S. & Hansen, S. H., 2009, In: Astronomy & Astrophysics. 500, 2, p. L37-L40 3 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  24 Citations (Scopus)

• Determining all gas properties in galaxy clusters from the dark matter distribution alone

  Frederiksen, T. F., Hansen, S. H., Høst, O. C. & Roncadlli, M., 2009, In: Astrophysical Journal. 700, 2, p. 1603-1608 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  8 Citations (Scopus)

• Galaksernes oprindelse og universets " dark ages "

  Fynbo, J. P. U., Andersen, A. C., Hansen, S. H., Pedersen, K., Sollerman, J. O. & Watson, D. J., 2009, In: Naturens Verden. 1, p. 26-33

  Research output: Contribution to journal › Journal article › Communication

• Measurement of dark matter velocity anisotropy in galaxy clusters

  Host, O., Hansen, S. H., Morandi, A., Ettori, S., Kay, S. T. & Valdarmini, R., 2009, In: Astrophysical Journal. 690, 1, p. 358-366

  Research output: Contribution to journal › Journal article › Research › peer-review

  33 Citations (Scopus)

• Might we eventually understand the origin of the dark matter velocity anisotropy?

  Hansen, S. H., 2009, In: Astrophysical Journal. 694, 2, p. 1250-1255

  Research output: Contribution to journal › Journal article › Research › peer-review

  20 Citations (Scopus)

• Mørkt stof - vi ved så meget og dog så lidt

  Hansen, S. H., Pedersen, K., Sollerman, J. O., Andersen, A. C., Fynbo, J. P. U., Hjorth, J., Toft, S. & Watson, D. J., 2009, In: Kvant. 2, p. 14-17 3 p.

  Research output: Contribution to journal › Journal article › Communication
• 2008

  Alas, the dark matter structures were not that trivial

  Schmidt, K. B., Hansen, S. H. & Macció, A. V., 2008, In: Astrophysical Journal Letters. 689, 1, p. L33-L36

  Research output: Contribution to journal › Journal article › Research › peer-review

  20 Citations (Scopus)

•  Impact of going beyond the Maxwell distribution in direct dark matter detection rates

  Vergados, J. D., Hansen, S. H. & Host, O., 2008, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 77, 2, p. 023509 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  54 Citations (Scopus)
• 2007

  An alternative to grids and glasses: quaquaversal pre-initial conditions for N-body simulations

  Hansen, S. H., Agertz, O., Joyce, M., Stadel, J., Moore, B. & Potter, D., 2007, In: Astrophysical Journal. 656, 2, p. 631-635 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  17 Citations (Scopus)

• Measuring the dark matter velocity anisotropy in galaxy clusters

  Hansen, S. H. & Piffaretti, R., 2007, In: Astronomy & Astrophysics. 476, 3, p. L37-L40 3 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  22 Citations (Scopus)

• Probing the nature of dark matter with cosmic x rays: Constraints from "dark blobs" and grating spectra of galaxy clusters

  Riemer-Sørensen, S., Pedersen, K., Hansen, S. H. & Dahle, H., 2007, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 76, 4, p. 043524

  Research output: Contribution to journal › Journal article › Research › peer-review

  45 Citations (Scopus)

• Searching for decaying axionlike dark matter from clusters of galaxies

  Riemer-Sørensen, S., Zioutas, K., Hansen, S. H., Pedersen, K., Dahle, H. & Liolios, A., 2007, In: Physical Review Letters. 99, 13, p. 131301

  Research output: Contribution to journal › Journal article › Research › peer-review

  7 Citations (Scopus)

• The nature of dark matter and the density profile and central behavior of relaxed halos

  Salvador-Sol'e, E., Manrique, A., Casado, G. & Hansen, S. H., 2007, In: Astrophysical Journal. 666, 1, p. 181-188 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  33 Citations (Scopus)

• What it takes to measure a fundamental difference between dark matter and baryons: the halo velocity anisotropy

  Host, O. & Hansen, S. H., 2007, In: Journal of Cosmology and Astroparticle Physics. 6, 016

  Research output: Contribution to journal › Journal article › Research › peer-review

  16 Citations (Scopus)
• 2006

  Sterile neutrinos in the milky way: observational constraints

  Riemer-Sørensen, S., Hansen, S. H. & Pedersen, K., 2006, In: Astrophysical Journal. 644, 1, p. L33-L36

  Research output: Contribution to journal › Journal article › Research › peer-review

  87 Citations (Scopus)
• 1999

  Neutrino physics in the early Universe: phenomenological implications of mass, decay and oscillation

  Hansen, S. H., 1999, København. 131 p.

  Research output: Book/Report › Ph.D. thesis