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B3 - Supernovae probing the Dark Energy

Type Ia supernovae, in their unprecedented capability as distance indicators, are the only direct proof of the accelerated expansion of the universe. They are now employed to probe the equation of state of the Dark Energy throughout a large fraction of the history of the universe, and they are currently the only means to map its expansion history and to identify the influence of the dominating energy density. The combination of distances from the local universe to beyond a look-back time of half its present age gives potentially the best leverage on the Dark Energy and its changes, if any.

Several projects are under way or planned to observe SNe Ia at all redshifts, starting from very nearby ones, to search for systematic effects in their calibration, at intermediate redshifts, and also very high redshifts, the aim being to determine the equation of state parameter of Dark Energy and, possibly, also its first derivative. However, model independent ways of interpreting the data sets need to be developed. The combination of data sets spanning all redshifts requires homogenization of the data sample and uniform interpretation. Of course, this work will be guided by information provided by explosion models.

The cross-correlation of different techniques (supernovae, weak lensing, clustering and CMB) is today often done in an ad hoc fashion and the individual correlations are ignored in fitting to the cosmological models. A uniform analysis tool to combine the signatures of the different observations in a single statistical analysis will to be developed.

The principal investigators of the project B3 are Wolfgang Hillebrandt at the Max Planck Institute for Astrophysics and Bruno Leibundgut at ESO.

100s_scaled.jpg sa2_scaled.jpg
Three-dimensional hydrodynamical simulation of a SNIa explosion. The first image shows the density distribution 100s after the explosion. The second image shows color-coded the distribution chemical composition of the same simulation. Blue corresponds to unburned material, redder color intermediate mass elements like magnesium, silicon and sulfur, the yellow region corresponds to material rich in iron group elements.

SN2002bo_scaled.jpg
Supernova SN 2002bo in NGC 3190 (Benetti et al. 2004).

Related publications

Review articles:

Other publications:

SN Ia observations and cosmology

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  • Ellis, R. S. , et al.: Verifying the Cosmological Utility of Type Ia Supernovae: Implications of a Dispersion in the Ultraviolet Spectra, ApJ, 674 (2008) 51
  • Davis, T. et al.: Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes, ApJ, 666 (2007) 716
  • Wood-Vasey, M., et al.: Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey, ApJ, 666 (2007) 694
  • Miknaitis, G., et al.: The ESSENCE Supernova Survey: Survey Optimization, Observations, and Supernova Photometry, ApJ 666 (2007) 674
  • Astier, P., et al.: The Supernova Legacy Survey: measurement of ΩM, ΩΛ and w from the first year data set, A&A 447 (2006) 31
  • Clocchiatti, A., et al.: Hubble Space Telescope and Ground-based Observations of Type Ia Supernovae at Redshift 0.5: Cosmological Implications, ApJ, 642 (2006) 1
  • Stritzinger, M., Leibundgut, B., Walch, S., Contardo, G.: Constraints on the progenitor systems of type Ia supernovae, A&A, 450 (2006) 241
  • Stritzinger, M., Leibundgut, B.: Lower limits on the Hubble Constant from models of Type Ia Supernovae, A&A, 431 (2005) 423
  • Blondin, S., Walsh, J. R., Leibundgut, B., Sainton, G.: Extracting clear supernova spectra: Towards a quantitative analysis of high-redshift Type Ia supernova spectra, A&A, 431 (2005) 757
  • Matheson, T., et al.: Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First 2 Years, AJ, 129 (2005) 2352
  • Krisciunas, K, et al.: Hubble Space Telescope Observations of Nine High-Redshift ESSENCE Supernovae, AJ, 130 (2005) 2453
  • Mazzali, P. A., et al.: High-Velocity Features: A Ubiquitous Property of Type Ia Supernovae, ApJ Letter, 623 (2005) L37
  • Kotak, R., et al.: Spectroscopy of the type Ia supernova SN 2002er: Days -11 to +215, A&A, 436 (2005) 1021
  • Riess, A. G., et al.: Identification of Type Ia Supernovae at Redshift 1.3 and Beyond with the Advanced Camera for Surveys on HST, ApJ, 600 (2004) L163
  • Barris, B. J., et al.: Twenty-three High-Redshift Supernovae from the Institute for Astronomy Deep Survey: Doubling the Supernova Sample at z$>$0.7, ApJ, 602 (2004) 571
  • Strolger, L.-G., et al.: The Hubble higher-z supernova search project: Supernovae to z ~ 1.6 and constraints on SN Ia progenitor models, ApJ, 613 (2004) 200
  • Riess, A. G., et al.: Type Ia supernovae discoveries at $z>1$ from the Hubble Space Telescope: Evidence for past deceleration and constraints on dark-energy evolution, ApJ, 607 (2004) 665
  • Sollerman, J., et al.: The late-time light curve of the type Ia supernova 2000cx, A&A, 428 (2004) 555
  • Spyromilio, J., Gilmozzi, R., Sollerman, J., Leibundgut, B., Fransson, C., Cuby, J.-G.: Optical and near infrared observations of SN 1998bu, A&A, 426 (2004) 547
  • Pignata, G., et al.: Photometric Observations of the Type Ia SN 2002er in UGC 10743, MNRAS, 355 (2004) 178
  • Tonry, J. L., et al.: Cosmological Results from High-z Supernovae, ApJ, 594 (2003) 1
  • Williams, B. F., et al.: Imaging and demography of the host galaxies of high-redshift Type Ia supernovae, AJ, 126 (2003) 2608
  • Knop, R. A., et al.: New Constraints on \Omega_M, \Omega_\Lambda, and w from an Independent Set of 11 High-Redshift Supernovae Observed with the Hubble Space Telescope, ApJ, 598 (2003) 103
  • Leibundgut, B.: Cosmological implications from observations of type Ia supernovae, Comp. Phys. Comm., 147 (2002) 459
  • Leibundgut, B.: Distant Type Ia Supernovae and Cosmology, Nucl. Phys. A, 688 (2001) 1
  • Contardo, G., Leibundgut, B., Vacca, W.D.: Epochs of Maximum Light and Bolometric Light Curves of Type Ia Supernovae, A&A, 359 (2000) 876
  • Riess, A.G., et al.: Tests of the Accelerating Universe with Near-Infrared Observations of a High-Redshift Type Ia Supernova, ApJ, 536 (2000) 62
  • Coil, A.L., et al.: Optical Spectra of Type Ia Supernovae at z=0.46 and z=1.19, ApJ, 544 (2000) L111

Theoretical models for SN Ia explosions and radiative transfer

  • Sauer, D., Mazzali, P.A., Blondin, S., et al.: Properties of the ultraviolet flux of type Ia supernovae: an analysis with synthetic spectra of SN 2001ep and SN 2001eh, MNRAS, (2008) in press (arXiv:0803.0871)
  • Pakmor, R. Röpke, F.K., Weiss, A., Hillebrandt, W.: The impact of type Ia supernovae on main sequence binary companions, A&A, 489 (2008) 943
  • Hachinger, S.,Mazzali, P.A., Tanaka, M., et al.: Spectral luminosity indicators in Type Ia supernovae. Understanding the SiII line-strength ratio and beyond, MNRAS, 389 (2008) 1087
  • Mazzali, P., Sauer, D.N., Pastorello, A., et al.: Abundance stratification in Type Ia supernovae - II. The rapidly declining, spectroscopically normal SN2004eo, MNRAS, 386 (2008) 1897
  • Taubenberger, S., Hachinger, S., Pignata, G., et al.: The underluminous Type Ia supernova 2005bl and the class of objects similar to SN 1991bg, MNRAS, 385 (2008) 75
  • Fink, M., Hillebrandt, W., Röpke, F.: Double-detonation supernovae of sub-Chandrasekhar mass white dwarfs, A&A, 467 (2007) 1133
  • Röpke, F., Hillebrandt, W., Schmidt, W., et al.: A Three-Dimensional Deflagration Model for Type Ia Supernovae Compared with Observations, ApJ, 668 (2007) 1132
  • Röpke, F.: Flame-driven Deflagration-to-Detonation Transitions in Type Ia Supernovae? ApJ, 668 (2007) 1103
  • Sim, S.A., Sauer, D.N., Röpke, F.K., Hillebrandt, W.: Light curves for off-centre ignition models of Type Ia supernovae, MNRAS, 378 (2007) 2
  • Röpke, F., Woosley, S.E., Hillebrandt, W.: Off-Center Ignition in Type Ia Supernovae. I. Initial Evolution and Implications for Delayed Detonation, ApJ, 660 (2007) 1344
  • Hillebrandt, W.; Sim, S. A.; Röpke, F. K.: Off-center explosions of Chandrasekhar-mass white dwarfs: an explanation of super-bright type Ia supernovae? A&A, 465 (2007) 17
  • Röpke, F. K.; Niemeyer, J. C.: Delayed detonations in full-star models of type Ia supernova explosions, A&A, 464 (2007) 683
  • Mazzali, P.A., Röpke, F.K. Benetti, S., Hillebrandt, W.: A Common Explosion Mechanism for Type Ia Supernovae, Science, 315 (2007) 825
  • Blinnikov, S., Röpke, F.K., Sorokina, E.I., et al.: Theoretical light curves for deflagration models of type Ia supernova, A&A, 453 (2007) 229
  • Röpke, F. K., Gieseler, M., Reinecke, M., Travaglio, C., Hillebrandt, W.: Type Ia supernova diversity in three-dimensional models, A&A, 453 (2006) 203
  • Iapichino, L., Brüggen, M., Hillebrandt, W., Niemeyer, J. C.: The ignition of thermonuclear flames in type Ia supernovae, A&A, 450 (2006) 655
  • Schmidt, W., Niemeyer, J. C., Hillebrandt, W., Röpke, F. K.: A localised subgrid scale model for fluid dynamical simulations in astrophysics. II. Application to type Ia supernovae, A&A, 450 (2006) 283
  • Sauer, D. N. , Hoffmann, T., Pauldrach, A. W. A.: Non-LTE models for synthetic spectra of type Ia supernovae / hot stars with extremely extended atmospheres Improved lower boundary conditions for the numerical solution of the radiative transfer, A&A, 459 (2006) 229
  • Blinnikov, S. I., Röpke, F. K., Sorokina, E. I., Gieseler, M., Reinecke, M., Travaglio, C., Hillebrandt, W.: Theoretical light curves for deflagration models of type Ia supernova, A&A, 453 (2006) 229
  • Stehle, M., Mazzali, P., Benetti, S., Hillebrandt, W.: Abundance Tomography of Type Ia Supernovae: I. The Case of SN 2002bo, MNRAS, 360 (2005) 1231
  • Kozma, C., Fransson, C., Hillebrandt, W., Travaglio, C., Sollerman, J., Reinecke, M., Röpke, F. K., Spyromilio, J.: Three-dimensional modeling of type Ia supernovae - The power of late time spectra, A&A, 437 (2005) 983
  • Röpke, F. K., Hillebrandt, W.: The distributed burning regime in type Ia supernova models, A&A, 429 (2005) L29
  • Röpke, F. K., Hillebrandt, W.: Full-star type Ia supernova explosion models, A&A, 431 (2005) 635
  • Röpke, F.K., Hillebrandt, W., Niemeyer, J.C.: The Cellular Burning Regime in Type Ia Supernova Explosions - II. Flame Propagation into Quiescent Fuel, A&A, 420 (2004) 411
  • Röpke, F.K., Hillebrandt, W., Niemeyer, J.C.: The Cellular Burning Regime in Type Ia Supernova Explosions - II. Flame Propagation into Vortical Fuel, A&A, 421 (2004) 783
  • Röpke, F.K., Hillebrandt: The case against the progenitor's carbon-to-oxygen ratio as a source of peak luminosity variations in Type Ia supernovae, A&A Lett., 420 (2004) L1
  • Benetti, S., Meikle, P., Stehle, M., et al.: Supernova 2002bo: inadequacy of the single parameter description, MNRAS, 348 (2004) 261
  • Travaglio, C., Hillebrandt, W., Reinecke, M., Thielemann, F.-K.: Nucleosynthesis in multi-dimensional SNIa explosions, A&A, 425 (2004) 1029
  • Röpke, F. K., Niemeyer, J. C., Hillebrandt, W.: On the Small-Scale Stability of Thermonuclear Flames in Type Ia Supernovae, ApJ, 588 (2003) 952
  • Reinecke, M. Hillebrandt, W., Niemeyer, J.C.: Three-dimensional simulations of type Ia supernovae, A&A, 391 (2002) 1167

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