Results 21 to 30 of about 11,937,910 (228)

A statistical analysis of circumstellar material in Type Ia supernovae [PDF]

, 2013
A key tracer of the elusive progenitor systems of Type Ia supernovae (SNe Ia) is the detection of narrow blueshifted time-varying Na I D absorption lines, interpreted as evidence of circumstellar material surrounding the progenitor system.
Hadjiyska, E., Smartt, SJ, Leloudas, Georgios,, Dhawan, S, Laher, R. R., Sand, D., Bersier, D, Ellman, N., Patat, F., Valenti, S, Chen, TW, Fraser, M, Nugent, P. E., Nugent, P., Margheim, S., Foerster, F., Walton, N., Hadjiyska, E, Smartt, S., Förster, F., Pan, Y.- C., Laher, R., Simon, J. D., González Gaitán, Santiago, Nugent, PE, Sternberg, A, Walton, NA, González-Gaitán, S, Chen, T.-W., Pan, Yunxiang, Molinaro, M, Ofek, E. O., Mazzali, P, Smartt, S. J.; id_orcid, Rabinowitz, D, Sand, D, Chen, T., Gal-Yam, A, Hachinger, S., Smareglia, R, Rabinowitz, D., Knapic, C, Margheim, S, Graham, M., Mazzali, PA, Blagorodnova, N, Podsiadlowski, P, Foerster, F, Feindt, U, Taddia, Francesco,, Podsiadlowski, P., Gal-Yam, A., Walker, E. S., Chen, T.- W., Chen, T. -W., Simon, J., Pan, Y. -C, Rest, A, Howell, D. A., Graham, ML, Walker, E., Patat, F, Sullivan, M., Pan, Y. C., Hachinger, S, Young, D. R.; id_orcid, Mazzali, P., Chen, T-W, Valenti, S., Maguire, K., Simon, JD, Morrell, N, Hook, Isobel, Ellman, N, Podsiadlowski, Philipp, Leloudas, G, McKinnon, R, Walker, ES, Smareglia, R., Baltay, C., González-Gaitán, S., Graham, M. L., Smartt, S. J., Pan, Y-C, Hook, I., Feindt, U., Molinaro, M., Walton, N. A., Förster, Francisco, Howell, DA, Fraser, M., Förster, F, Taddia, F, Taddia, F., Baltay, C, Laher, RR, Young, D., Chen, T. W., Ofek, E., Hook, IM, McKinnon, R., Sullivan, M, Sternberg, A., Young, D. R., Pan, Y.-C., Pan, Y. -C., Hook, I. M., Rest, A., Gutiérrez, C, Pan, YC, Young, DR, Bersier, D., Maguire, K, Knapic, C., Ofek, EO, Blagorodnova, N., Inserra, C, Howell, D., Gutiérrez, C., Dhawan, S., Chen, T. -W, Inserra, C., Pan, Y., Leloudas, G., Morrell, N.   +124 more
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The pursuit of the Hubble Constant using Type II Supernovae [PDF]

, 2023
The use of multiple independent methods with their own systematic uncertainties is crucial for resolving the ongoing tension between local and distant measurements of the Hubble constant ($H_{0}$). While type Ia supernovae (SNe Ia) have historically been
Galbany, L., de Jaeger, T.
core   +4 more sources

Topics in Core-Collapse Supernova Theory: The Formation of Black Holes and the Transport of Neutrinos [PDF]

, 2012
Core-Collapse Supernovae are one of the most complex astrophysical systems in the universe. They deeply entwine aspects of physics and astrophysics that are rarely side by side in nature.
O'Connor, Evan Patrick
core   +1 more source

Dynamics of Type-II Supernovae [PDF]

International Astronomical Union Colloquium, 1996
Hydrodynamical simulations of type-II supernovae in one and two dimensions are performed for the revival phase of the delayed shock by neutrino energy deposition. Starting with a post-collapse model of the 1.31 Mʘ iron core of a 15 Mʘ star immediately after the stagnation of the prompt shock about 10 ms after core bounce, the models are followed for ...
H.-TH. Janka, E. M. Müller
openaire   +1 more source

Abundance Tomography of Type Ia Supernovae [PDF]

, 2004
Many uncertainties about the physics of Type Ia Supernovae have been revealed in the recent past, and numerous pieces are puzzled together to achieve a complete description of the phenomenon of thermonuclear explosions in the sky. However, very important
Stehle, Matthias
core   +1 more source

Type II supernova energetics

The Astrophysical Journal, 1985
In this paper we exploit the fact that the collapsing core of a massive star, at the endpoint of its thermonuclear life, rapidly becomes hydrostatic after bouncing at nuclear densities. The energy transferred by pdV work from the inner unshocked core as it becomes hydrostatic to the bounce shock in the outer core is, to a good approximation, the ...
J. M. Lattimer, A. Burrows, A. Yahil
openaire   +1 more source

Type II Supernova Photospheres and the Distance to Supernova 1987A [PDF]

International Astronomical Union Colloquium, 1988
Among the many historic opportunities provided by the recent supernova in the LMC is that to improve our understanding of the physical conditions in the neighborhood of supernova photospheres, even though 1987A was initially characterized by radial and time scales smaller (by a factor 5–10) than “standard” more luminous SNII.
Manorama Chilukuri, Robert V. Wagoner
openaire   +1 more source

Type-II supernovae and neutrino magnetic moments [PDF]

Astroparticle Physics, 1999
11 pages, 5 figures, latex file, final version, references ...
Nunokawa, Hiroshi, Tomàs, Ricard, Furtado Valle, José Wagner   +2 more
openaire   +3 more sources

An updated Type II supernova Hubble diagram [PDF]

Astronomy & Astrophysics, 2018
We present photometry and spectroscopy of nine Type II-P/L supernovae (SNe) with redshifts in the 0.045 ≲z≲ 0.335 range, with a view to re-examining their utility as distance indicators. Specifically, we apply the expanding photosphere method (EPM) and the standardized candle method (SCM) to each target, and find that both methods yield distances that ...
Gall, E. E. E., Kotak, R., Leibundgut, B., Taubenberger, S., Hillebrandt, W., Kromer, M., Burgett, W. S., Chambers, K., Flewelling, H., Huber, M. E., Kaiser, N., Kudritzki, R. P., Magnier, E. A., Metcalfe, N., Smith, K., Tonry, J. L., Wainscoat, R. J., Waters, C.   +17 more
openaire   +5 more sources

Optical Spectra of Thermonuclear Supernovae in the Local and Distant Universe [PDF]

, 2005
This thesis is devoted to the study of optical spectra of thermonuclear supernovae, known as ``Type Ia'' supernovae (SN Ia). These violent stellar explosions, visible across a large fraction of the observable universe, are used to measure distances on ...
Blondin, Stephane
core   +1 more source