Zobrazeno 1 - 10
of 350
pro vyhledávání: '"A V, Ashley"'
Autor:
Fryer, Christopher L., Burns, Eric, Ho, Anna Y. Q., Lien, Amy Y., Perley, Daniel A., Vail, Jada L., Villar, V. Ashley
For over 25 years, the origin of long-duration gamma-ray bursts (lGRBs) has been linked to the collapse of rotating massive stars. However, we have yet to pinpoint the stellar progenitor powering these transients. Moreover, the dominant engine poweri
Externí odkaz:
http://arxiv.org/abs/2410.10378
Autor:
Zhang, Gemma, Helfer, Thomas, Gagliano, Alexander T., Mishra-Sharma, Siddharth, Villar, V. Ashley
A common setting in astronomy is the availability of a small number of high-quality observations, and larger amounts of either lower-quality observations or synthetic data from simplified models. Time-domain astrophysics is a canonical example of thi
Externí odkaz:
http://arxiv.org/abs/2408.16829
Autor:
Gomez, Sebastian, Temim, Tea, Fox, Ori, Villar, V. Ashley, Shahbandeh, Melissa, Ashall, Chris, Jencson, Jacob E., Langeroodi, Danial, De Looze, Ilse, Milisavljevic, Dan, Pierel, Justin, Rest, Armin, Szalai, Tamás, Tinyanont, Samaporn
We present JWST/MIRI observations of the Type I superluminous supernova (SLSN) 2017gci taken over 2000 rest-frame days after the supernova (SN) exploded, which represent the latest phase images taken of any known SLSN. We find that archival \WISE det
Externí odkaz:
http://arxiv.org/abs/2408.15397
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
Autor:
Leung, Matthew C. H., Jurgenson, Colby A., Szentgyorgyi, Andrew, McLeod, Brian, Onyuksel, Cem, Zajac, Joseph, Charbonneau, David, Podgorski, William, Unger, Abigail, Mueller, Mark, Smith, Matthew, Baldwin, Daniel, Villar, V. Ashley
Publikováno v:
Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130964M (18 July 2024)
The Hartmann test is a method used to measure the wavefront error in a focal optical system, wherein a mask with a pattern of small holes is placed at the system's aperture stop. By taking an image at a defocused plane, the differences between the id
Externí odkaz:
http://arxiv.org/abs/2407.20344
Autor:
Gomez, Sebastian, Nicholl, Matt, Berger, Edo, Blanchard, Peter K., Villar, V. Ashley, Rest, Sofia, Hosseinzadeh, Griffin, Aamer, Aysha, Ajay, Yukta, Athukoralalage, Wasundara, Coulter, David C., Eftekhari, Tarraneh, Fiore, Achille, Franz, Noah, Fox, Ori, Gagliano, Alexander, Hiramatsu, Daichi, Howell, D. Andrew, Hsu, Brian, Karmen, Mitchell, Siebert, Matthew R., Könyves-Tóth, Réka, Kumar, Harsh, McCully, Curtis, Pellegrino, Craig, Pierel, Justin, Rest, Armin, Wang, Qinan
We present the most comprehensive catalog to date of Type I Superluminous Supernovae (SLSNe), a class of stripped envelope supernovae (SNe) characterized by exceptionally high luminosities. We have compiled a sample of 262 SLSNe reported through 2022
Externí odkaz:
http://arxiv.org/abs/2407.07946
Autor:
Peng, Yinglei, Ristić, Marko, Kedia, Atul, O'Shaughnessy, Richard, Fontes, Christopher J., Fryer, Chris L., Korobkin, Oleg, Mumpower, Matthew R., Villar, V. Ashley, Wollaeger, Ryan T.
Publikováno v:
Phys. Rev. Res. 6, 033078 (2024)
Kilonovae are the electromagnetic transients created by the radioactive decay of freshly synthesized elements in the environment surrounding a neutron star merger. To study the fundamental physics in these complex environments, kilonova modeling requ
Externí odkaz:
http://arxiv.org/abs/2402.05871
Autor:
Gagliano, Alexander, Villar, V. Ashley
The Vera C. Rubin Observatory is slated to observe nearly 20 billion galaxies during its decade-long Legacy Survey of Space and Time. The rich imaging data it collects will be an invaluable resource for probing galaxy evolution across cosmic time, ch
Externí odkaz:
http://arxiv.org/abs/2312.16687
Autor:
Ransome, Conor L., Villar, V. Ashley, Tartaglia, Anna, Gonzalez, Sebastian Javier, Jacobson-Galán, Wynn V., Kilpatrick, Charles D., Margutti, Raffaella, Foley, Ryan J., Grayling, Matthew, Ni, Yuan Qi, Yarza, Ricardo, Ye, Christine, Auchettl, Katie, de Boer, Thomas, Chambers, Kenneth C., Coulter, David A., Drout, Maria R., Farias, Diego, Gall, Christa, Gao, Hua, Huber, Mark E., Ibik, Adaeze L., Jones, David O., Khetan, Nandita, Lin, Chien-Cheng, Politsch, Collin A., Raimundo, Sandra I., Rest, Armin, Wainscoat, Richard J., Yadavalli, S. Karthik, Zenati, Yossef
The nearby type II supernova, SN2023ixf in M101 exhibits signatures of early-time interaction with circumstellar material in the first week post-explosion. This material may be the consequence of prior mass loss suffered by the progenitor which possi
Externí odkaz:
http://arxiv.org/abs/2312.04426
Astrophysical transient phenomena are traditionally classified spectroscopically in a hierarchical taxonomy; however, this graph structure is currently not utilized in neural net-based photometric classifiers for time-domain astrophysics. Instead, in
Externí odkaz:
http://arxiv.org/abs/2312.02266