搜索结果: 31-45 共查到“理学 supernova”相关记录103条 . 查询时间(0.078 秒)
Improved Constraints on Type Ia Supernova Host Galaxy Properties using Multi-Wavelength Photometry and their Correlations with Supernova Properties
Improved Constraints Supernova Galaxy Properties Multi-Wavelength Photometry Correlations Supernova Properties
2011/10/18
We improve estimates of stellar mass and mass-weighted average age of Type Ia supernova (SN Ia) host galaxies by combining UV and near-IR photometry with optical photometry in our analysis. Using 206 ...
Classifying structures in the ISM with Support Vector Machines: the G16.05-0.57 supernova remnant
Classifying structures Support Vector Machines supernova remnant
2011/10/20
We apply Support Vector Machines -- a machine learning algorithm -- to the task of classifying structures in the Interstellar Medium. As a case study, we present a position-position velocity data cube...
A More General Model for the Intrinsic Scatter in Type Ia Supernova Distance Moduli
General Model Intrinsic Scatter Supernova Distance Moduli
2011/10/13
We describe a new formalism to fit the parameters $\alpha$ and $\beta$ that are used in the SALT2 model to determine the standard magnitudes of Type Ia supernovae. The new formalism describes the intr...
The Role of Collective Neutrino Flavor Oscillations in Core-Collapse Supernova Shock Revival
Core-Collapse Supernova Shock Revival Neutrino
2011/7/21
We explore the effects of collective neutrino flavor oscillations due to neutrino-neutrino interactions on the neutrino heating behind a stalled core-collapse supernova shock. We carry out axisymmetri...
Five Supernova Survey Galaxies in the Southern Hemisphere: Supernova Ia Rates
supernovae: general galaxies:general galaxies: stellar content
2011/10/9
Based on the database with 56 SN events discovered in 3838 galaxies of the southern hemisphere, we compute the rate of supernovae (SNe) of different types along the Hubble sequence normalized to the o...
{\it Suzaku} observation of Galactic supernova remnant CTB 37A (G348.5+0.1)
ISM: supernova remnants− ISM:individual(CTB 37A)− X-rays
2011/9/28
We present here the results of the observation of CTB 37A obtained with the X-ray Imaging Spectrometer onboard the {\it Suzaku} satellite. The X-ray spectrum of CTB 37A is well fitted by two component...
A Sino-German $λ$6\ cm polarization survey of the Galactic plane VI. Discovery of supernova remnants G178.2-4.2 and G25.1-2.3
supernova remnants – ISM: individual objects: G178.2− 4.2, G25.1− 2.3 – Radio continuum: ISM
2011/9/27
Supernova remnants (SNRs) were often discovered in radio surveys of the Galactic plane. Because of the surface-brightness limit of previous surveys, more faint or confused SNRs await discovery. The Si...
Negative Cosmological Energy Indicated by Supernova Redshift-Luminosity Correlation
Negative Cosmological Energy Supernova Redshift-Luminosity General Relativity and Quantum Cosmology
2011/8/2
Abstract: Milne's classical homogeneous-universe cosmology predicts a product of Hubble constant with luminosity distance that equals z + z2/2, where z is redshift. Supernova-data's support of this un...
Discovery Prospects for a Biogenic Supernova Signature
Discovery Prospects Biogenic Supernova Signature
2011/1/10
Within the universe, the astrophysical sites responsible for the production of radioactive 60Fe, of half life 2.62 Myr, are primarily confined to two: Type 1a supernovae and massive stars that end the...
Lepton flavor violating New Physics and supernova explosion
Lepton flavor violating New Physics supernova explosion
2011/1/13
Electrons and electron neutrinos in the inner core of the core-collapse supernova are highly degenerate and therefore numerous during a few seconds of explosion. In contrast, leptons of other flavors ...
Collateral Effects on Solar Nebula Oxygen Isotopes due to Injection of 26Al by a Nearby Supernova
Solar Nebula Oxygen Isotopes 26Al Nearby Supernova
2011/1/10
Injection of material from a core-collapse supernova into the solar system's already-formed disk is one proposed mechanism for producing the short-lived radionuclides, such as 26Al and 41Ca, inferred ...
The Supernova Legacy Survey 3-year sample: Type Ia Supernovae photometric distances and cosmological constraints
The Supernova Legacy Survey 3-year sample Type Ia Supernovae photometric distances
2011/1/10
We present photometric properties and distance measurements of 252 high redshift Type Ia supernovae (0.15 < z < 1.1) discovered during the first three years of the Supernova Legacy Survey (SNLS). Thes...
Quark nova imprint in the extreme supernova explosion SN 2006gy: the advent of the Quark Star
Quark nova imprint the extreme supernova explosion SN 2006gy
2011/1/11
The existence of quark stars has until now been purely hypothetical. In this work, we uncover undeniable evidence of these exotic objects with far reaching implications to various branches of physics ...
Observational astronomy has shown significant growth over the last decade and has made important contributions to cosmology. A major paradigm shift in cosmology was brought about by observations of Ty...
Supersoft X-ray Phase of Single Degenerate Type Ia Supernova Progenitors in Early Type Galaxies
Supersoft X-ray Phase Single Degenerate Type
2011/1/13
In the single degenerate (SD) scenario for Type Ia supernova (SN Ia) progenitors, an accreting white dwarf (WD) is expected to undergo a supersoft X-ray source (SSS) phase. Recently, Gilfanov & Bogdan...