RADIATION-HYDRODYNAMICAL MODELING OF CORE-COLLAPSE SUPERNOVAE: LIGHT CURVES AND THE EVOLUTION OF PHOTOSPHERIC VELOCITY AND TEMPERATURE

Journal Article · Tue Nov 01 00:00:00 EDT 2011 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/741/1/41; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21612755

Pumo, M L; Zampieri, L ^[1]

---

1. INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova (Italy)

We have developed a relativistic, radiation-hydrodynamics Lagrangian code, specifically tailored to simulate the evolution of the main observables (light curve and the evolution of photospheric velocity and temperature) in core-collapse supernova (CC-SN) events. The distinctive features of the code are an accurate treatment of radiative transfer coupled to relativistic hydrodynamics, a self-consistent treatment of the evolution of the innermost ejecta taking into account the gravitational effects of the central compact remnant, and a fully implicit Lagrangian approach to the solution of the coupled nonlinear finite difference system of equations. Our aim is to use it as a numerical tool to perform calculations of a grid of models to be compared with observations of CC-SNe. In this paper, we present some testcase simulations and a comparison with observations of SN 1987A, as well as with the results obtained with other numerical codes. We also briefly discuss the influence of the main physical parameters (ejected mass, progenitor radius, explosion energy, amount of {sup 56}Ni) on the evolution of the ejecta, and the implications of our results in connection with the possibility to 'standardize' hydrogen-rich CC-SNe for using them as candles to measure cosmological distances.

• OSTI ID: 21612755
• Journal Information: Astrophysical Journal, Vol. 741, Issue 1; Other Information: DOI: 10.1088/0004-637X/741/1/41; Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
EQUATIONS
GALACTIC EVOLUTION
HYDRODYNAMICS
HYDROGEN
LAGRANGIAN FUNCTION
NONLINEAR PROBLEMS
RADIANT HEAT TRANSFER
RELATIVISTIC RANGE
SIMULATION
STAR EVOLUTION
SUPERNOVAE
BINARY STARS
ELEMENTS
ENERGY RANGE
ENERGY TRANSFER
ERUPTIVE VARIABLE STARS
EVOLUTION
FLUID MECHANICS
FUNCTIONS
HEAT TRANSFER
MECHANICS
NONMETALS
STARS
VARIABLE STARS