Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Mandel, Kaisey S"'
Autor:
Boyd, Benjamin M., Narayan, Gautham, Mandel, Kaisey S., Grayling, Matthew, Berres, Aidan, Li, Mai, Do, Aaron, Saha, Abhijit, Axelrod, Tim, Matheson, Thomas, Olszewski, Edward W., Bohlin, Ralph C., Calamida, Annalisa, Holberg, Jay B., Hubeny, Ivan, Mackenty, John W., Rest, Armin, Sabbi, Elena, Stubbs, Christopher W.
We use hierarchical Bayesian modelling to calibrate a network of 32 all-sky faint DA white dwarf (DA WD) spectrophotometric standards ($16.5 < V < 19.5$) alongside the three CALSPEC standards, from 912 \r{A} to 32 $\mu$m. The framework is the first o
Externí odkaz:
http://arxiv.org/abs/2412.08809
Autor:
Tak, Hyungsuk, Chen, Yang, Kashyap, Vinay L., Mandel, Kaisey S., Meng, Xiao-Li, Siemiginowska, Aneta, van Dyk, David A.
The production of complex astronomical data is accelerating, especially with newer telescopes producing ever more large-scale surveys. The increased quantity, complexity, and variety of astronomical data demand a parallel increase in skill and sophis
Externí odkaz:
http://arxiv.org/abs/2408.16179
Type Ia supernovae (SNe Ia) are thermonuclear exploding stars that can be used to put constraints on the nature of our universe. One challenge with population analyses of SNe Ia is Malmquist bias, where we preferentially observe the brighter SNe due
Externí odkaz:
http://arxiv.org/abs/2407.15923
Type Ia supernovae (SNe Ia) are standarizable candles whose observed light curves can be used to infer their distances, which can in turn be used in cosmological analyses. As the quantity of observed SNe Ia grows with current and upcoming surveys, in
Externí odkaz:
http://arxiv.org/abs/2405.06013
Autor:
Karchev, Konstantin, Grayling, Matthew, Boyd, Benjamin M., Trotta, Roberto, Mandel, Kaisey S., Weniger, Christoph
Publikováno v:
Mon. Notices Royal Astron. Soc. 530 (2024) 3881-3896
We present the first fully simulation-based hierarchical analysis of the light curves of a population of low-redshift type Ia supernovae (SNae Ia). Our hardware-accelerated forward model, released in the Python package slicsim, includes stochastic va
Externí odkaz:
http://arxiv.org/abs/2403.07871
Autor:
Do, Aaron, Shappee, Benjamin J., Tonry, John L., Tully, R. Brent, de Jaeger, Thomas, Rubin, David, Ashall, Chris, Burns, Christopher R., Desai, Dhvanil D., Hinkle, Jason T., Hoogendam, Willem B., Huber, Mark E., Jones, David O., Mandel, Kaisey S., Payne, Anna V., Peterson, Erik R., Scolnic, Dan, Tucker, Michael A.
We introduce the Hawai'i Supernova Flows project and present summary statistics of the first 1,217 astronomical transients observed, 668 of which are spectroscopically classified Type Ia Supernovae (SNe Ia). Our project is designed to obtain systemat
Externí odkaz:
http://arxiv.org/abs/2403.05620
Publikováno v:
MNRAS 530, 4016-4031 (2024)
We use rest-frame optical and near-infrared (NIR) observations of 42 Type Ia supernovae (SNe Ia) from the Carnegie Supernova Project at low-$z$ and 37 from the RAISIN Survey at high-$z$ to investigate correlations between SN Ia host galaxy dust, host
Externí odkaz:
http://arxiv.org/abs/2402.18624
Autor:
Grayling, Matthew, Thorp, Stephen, Mandel, Kaisey S., Dhawan, Suhail, Uzsoy, Ana Sofia M., Boyd, Benjamin M., Hayes, Erin E., Ward, Sam M.
We apply the hierarchical probabilistic SED model BayeSN to analyse a sample of 475 SNe Ia (0.015 < z < 0.4) from Foundation, DES3YR and PS1MD to investigate the properties of dust in their host galaxies. We jointly infer the dust law $R_V$ populatio
Externí odkaz:
http://arxiv.org/abs/2401.08755
Autor:
Hayes, Erin E., Thorp, Stephen, Mandel, Kaisey S., Arendse, Nikki, Grayling, Matthew, Dhawan, Suhail
Publikováno v:
MNRAS, 530, pp.3942-3963 (2024)
We present GausSN, a Bayesian semi-parametric Gaussian Process (GP) model for time-delay estimation with resolved systems of gravitationally lensed supernovae (glSNe). GausSN models the underlying light curve non-parametrically using a GP. Without as
Externí odkaz:
http://arxiv.org/abs/2311.17997
A detailed map of the distribution of dust at high Galactic latitudes is essential for future cosmic microwave background (CMB) polarization experiments because the dust, while diffuse, remains a significant foreground in these regions. We develop a
Externí odkaz:
http://arxiv.org/abs/2311.03199