Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Goldberg, Jared A."'
We predict the existence of $\alpha$ Ori B, a low-mass companion orbiting Betelgeuse. This is motivated by the presence of a 2170-day Long Secondary Period (LSP) in Betelgeuse's lightcurve, a periodicity $\approx5$ times longer than the star's 416 da
Externí odkaz:
http://arxiv.org/abs/2408.09089
Autor:
Hsu, Brian, Smith, Nathan, Goldberg, Jared A., Bostroem, K. Azalee, Hosseinzadeh, Griffin, Sand, David J., Pearson, Jeniveve, Hiramatsu, Daichi, Andrews, Jennifer E., Beasor, Emma R., Dong, Yize, Farah, Joseph, Galbany, LluÍs, Gomez, Sebastian, Gonzalez, Estefania Padilla, Gutiérrez, Claudia P., Howell, D. Andrew, Könyves-Tóth, Réka, McCully, Curtis, Newsome, Megan, Shrestha, Manisha, Terreran, Giacomo, Villar, V. Ashley, Wang, Xiaofeng
We present and analyze the extensive optical broadband photometry of the Type II SN 2023ixf up to one year after explosion. We find that, when compared to two pre-existing model grids, the pseudo-bolometric light curve is consistent with drastically
Externí odkaz:
http://arxiv.org/abs/2408.07874
Relativistic jets from a black hole (BH) following the core-collapse of a massive star (''collapsar'') is a leading model for gamma-ray bursts (GRBs). However, the two key ingredients for a Blandford-Znajek (BZ) powered jet $-$ rapid rotation and a s
Externí odkaz:
http://arxiv.org/abs/2407.16745
Autor:
Teja, Rishabh Singh, Goldberg, Jared A., Sahu, D. K., Anupama, G. C., Singh, Avinash, Swain, Vishwajeet, Bhalerao, Varun
We present detailed multi-band photometric and spectroscopic observations and analysis of a rare core-collapse supernova SN 2021wvw, that includes photometric evolution up to 250 d and spectroscopic coverage up to 100 d post-explosion. A unique event
Externí odkaz:
http://arxiv.org/abs/2407.13207
We derive the dimension-8 standard-model effective theory (SMEFT) contact terms relevant for vector-pair production at the LHC and lepton colliders. We first list the relevant dimension-8 massless SMEFT amplitudes, and then obtain the low-energy ampl
Externí odkaz:
http://arxiv.org/abs/2407.07945
Autor:
Cheng, Shelley J., Goldberg, Jared A., Cantiello, Matteo, Bauer, Evan B., Renzo, Mathieu, Conroy, Charlie
Eruptive mass loss in massive stars is known to occur, but the mechanism(s) are not yet well-understood. One proposed physical explanation appeals to opacity-driven super-Eddington luminosities in stellar envelopes. Here, we present a 1D model for er
Externí odkaz:
http://arxiv.org/abs/2405.12274
Evolved cool stars of various masses are major cosmic engines, delivering substantial mechanical and radiative feedback to the interstellar medium through strong stellar winds and supernova ejecta. These stars play a pivotal role in enriching the int
Externí odkaz:
http://arxiv.org/abs/2402.00187
Some hydrogen-rich core-collapse supernovae (type IIP SNe) exhibit evidence for a sustained energy source powering their light curves, resulting in a brighter and/or longer-lasting hydrogen-recombination plateau phase. We present a semi-analytic SNII
Externí odkaz:
http://arxiv.org/abs/2401.13731
Core-collapse supernovae are candidate sites for the rapid neutron capture process ($r$-process). We explore the effects of enrichment from $r$-process nuclei on the light-curves of hydrogen-rich supernovae (SNe IIP) and assess the detectability of t
Externí odkaz:
http://arxiv.org/abs/2401.13035
Autor:
Johnston, Cole, Michielsen, Mathias, Anders, Evan H., Renzo, Mathieu, Cantiello, Matteo, Marchant, P., Goldberg, Jared A., Townsend, Richard H. D., Sabhahit, Gautham, Jermyn, Adam S.
1D stellar evolution calculations produce uncertain predictions for quantities like the age, core mass, core compactness, and nucleo-synthetic yields; a key source of uncertainty is the modeling of interfaces between regions that are convectively sta
Externí odkaz:
http://arxiv.org/abs/2312.08315