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Tentative detection of the gravitational magnification of type Ia supernovae
Jakob Jonsson, Tomas Dahlen, Ariel Goobar +2
The flux from distant type Ia supernovae (SN) is likely to be amplified or de-amplified by gravitational lensing due to matter distributions along the line-of-sight. A gravitationa…
The Peculiar Type Ia Supernova 2005hk
V. Stanishev, S. Taubenberger, G. Blanc +15
We present a preliminary analysis of an extensive set of optical observations of the Type Ia SN 2005hk. We show that the evolution of SN 2005hk closely follows that of the peculiar…
Tuning Gravitationally Lensed Standard Sirens
Jakob Jonsson, Ariel Goobar, Edvard Mortsell
Gravitational waves emitted by chirping supermassive black hole binaries could in principle be used to obtain very accurate distance determinations. Provided they have an electroma…
Type Ia SNe along redshift: the R(Si II) ratio and the expansion velocities in intermediate z supernovae
G. Altavilla, P. Ruiz-Lapuente, A. Balastegui +17
We study intermediate--z SNe Ia using the empirical physical diagrams which enable to learn about those SNe explosions. This information can be very useful to reduce systematic unc…
SN 2004aw: Confirming Diversity of Type Ic Supernovae
S. Taubenberger, A. Pastorello, P. A. Mazzali +24
Optical and near-infrared observations of the Type Ic supernova (SN) 2004aw are presented, obtained from day -3 to day +413 with respect to the B-band maximum. The photometric evol…
Measurement of Ω_m, Ω_Λ from a blind analysis of Type Ia supernovae with CMAGIC: Using color information to verify the acceleration of the Universe
A. Conley, G. Goldhaber, L. Wang +26
We present measurements of Ω_m and Ω_Λ from a blind analysis of 21 high-redshift supernovae using a new technique (CMAGIC) for fitting the multi-color lightcurves of Type Ia supern…