“Supernova” Science-Research, November 2021 — summary from DOE Pages, Astrophysics Data System and Arxiv

DOE Pages — summary generated by Brevi Assistant

Improving making use of Type Ia supernovae as common candles calls for a much better approach to incorporating the relationship between SNe Ia and the properties of their host galaxies. Using a spectroscopically confirmed example of ~1600 SNe Ia, we create the first empirical model of underlying populations for SNe Ia light-curve properties that includes their dependence on host-galaxy stellar mass; we find a substantial relationship between stretch population and stellar mass and a weaker relationship in between color and stellar mass. For low-redshift SN Ia samples utilized in numerous cosmological evaluations over the past years, we probe for organized predisposition by searching for correlations between surface area brightness measurements and Hubble residuals. The Hubble residuals are from two current dimensions with low-z SNe Ia that overlap the PS1 footprint: the DES 3 year cosmology evaluation, with 120 overlapping low-z SNe Ia from the Harvard-Smithsonian Center for Astrophysics surveys and Carnegie Supernova Project, and the PS1 single-telescope analysis, with 172 overlapping low-z SNe Ia from the Foundation Supernova Survey. We examine the spooky diversity of Type Ia supernovae at optimum light using high signal-to-noise spectrophotometry of 173 SNe Ia from the Nearby Supernova Factory. We find that the time evolution of SNe Ia near optimum light is incredibly similar, with 84. 6% of the difference alike to all SNe Ia. We reveal just how spectra of Type Ia supernovae at maximum light can be utilized to improve cosmological range price quotes. In a companion article, we utilized manifold learning to build a three-dimensional parameterization of the inherent diversity of SNe Ia at optimal light that we call the Twins Embedding. ABSTRACT The success of Type Ia supernova range standardization for cosmology counts on a single global straight relationship in between their peak brightness and colour, the β specification. Additionally, we discover that blue SNe in low-mass environments are much better standard candle lights than the others. In the following decade, short-term searches from the Vera C. Rubin Observatory and the Nancy Grace Roman Space Telescope will raise the sample of well-known Type Ia supernovae from ~10 3 to 10 5. By utilizing byosed for SN Ia cosmology simulations, future evaluations will have better adaptability to constrain or lower such SN Ia modeling unpredictabilities.

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Astrophysics Data System — summary generated by Brevi Assistant

We present the results of 3 GHz radio continuum monitorings of 23 superluminous supernovae and their host galaxies by utilizing the Karl G. Jansky Very Large Array performed 5–21 yr after the surges. We additionally constricted the models of pulsar wind galaxies powered by a recently born magnetar for a subsample of SLSNe with model predictions in the literary works. Some extremely reddened Type Ia supernovae present low total-to-selective extinction proportions in contrast to that of common Milky Way dust, and polarization contours that increase outstanding to blue wavelengths, with peak polarization worths at short wavelengths in comparison to the regular Galactic values. We find that there is a general fad of SNe Ia in spiral nebula displaying enhanced polarization worths when located better to the host galaxies’ centre, while SNe Ia in elliptical machine host galaxies show low polarization. We performed a comprehensive evaluation of the detectability of a wide variety of gravitational waves stemmed from core-collapse supernova simulations utilizing gravitational-wave detector sound scaled to the level of sensitivity of the upcoming 4th and fifth observing runs of the Advanced LIGO, Advanced Virgo, and KAGRA. As systematic WaveBurst makes very little assumptions on the morphology of a gravitational-wave signal, it can play a crucial function in the first detection of gravitational waves from an event in the Milky Way. Current empirical proof has shown that white dwarf mergings are an extremely effective mechanism for mass accumulation onto WDs in the galaxy. We present early-time observations of SN 2019muj, among the best-observed members of the strange SN Iax course. SN 2019muj supplies a one-of-akind possibility to link very low-luminosity SNe Iax to well-studied, brighter SNe Iax. Cosmological analyses of examples of photometrically-identified Type Ia supernovae depend upon understanding the effects of ‘contamination’ from core-collapse and strange SN Ia occasions. We employ a rigorous analysis on state-of-the-art simulations of photometrically determined SN Ia examples and establish cosmological predispositions because of such ‘non-Ia’ contamination at night Energy Survey 5-year SN example.

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Arxiv — summary generated by Brevi Assistant

Some highly reddened Type Ia supernovae show reduced total-to-selective extinction proportions in comparison to that of common Milky Way dust, and polarization curves that climb outstanding to blue wavelengths, with peak polarization values at short wavelengths in contrast to the normal Galactic values. We discover that there is a basic fad of SNe Ia in spiral nebula showing enhanced polarization values when located more detailed to the host galaxies’ centre, while SNe Ia in elliptical exerciser host galaxies show reduced polarization. In this paper we present a novel approach to estimating the time advancement of proto-neutron star structure from the neutrino signal in core-collapse supernovae. By combining an additional fitting function standing for the correlation between TONE and advancing number of events at each neutrino observatory, PNS mass and span can be recovered from totally observed neutrino data. Making use of ultraviolet light contours we constrict the circumstellar environments of 1080 Type Ia supernovae within z < 0.5 from historical Galaxy Evolution Explorer monitorings. By injecting model light contours into our information and then recuperating them, we constrict a broad series of CSM communications based upon the CSM communication beginning time and the optimum luminosity. Current observational proof has shown that white dwarf mergings are an extremely reliable mechanism for mass accumulation onto WDs in the galaxy. In contrast to the SD channel, WD merger near- M_Ch SNe Ia and SNe Iax will not create observable buddy trademarks. We present a new technique to evaluate in an extensive way supernovae and large-scale surveys. We compare the performance of the 6x2pt approach to the typical one using just galaxy clustering and some recently proposed combinations of galaxy and supernovae data and evaluate the feasible gains by ideally extracting the linear details. Cosmological analyses of examples of photometrically-identified Type Ia supernovae depend on recognizing the effects of ‘contamination’ from core-collapse and peculiar SN Ia events. We employ a rigorous analysis on advanced simulations of photometrically identified SN Ia samples and figure out cosmological biases as a result of such ‘non-Ia’ contamination at night Energy Survey 5-year SN sample.

Please keep in mind that the text is machine-generated by the Brevi Technologies’ Natural language Generation model, and we do not bear any responsibility. The text above has not been edited and/or modified in any way.

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