Zobrazeno 1 - 10
of 572
pro vyhledávání: '"A. Jerkstrand"'
Autor:
Ravi, Aravind P., Valenti, Stefano, Dong, Yize, Hiramatsu, Daichi, Barmentloo, Stan, Jerkstrand, Anders, Bostroem, K. Azalee, Pearson, Jeniveve, Shrestha, Manisha, Andrews, Jennifer E., Sand, David J., Hosseinzadeh, Griffin, Lundquist, Michael, Hoang, Emily, Mehta, Darshana, Retamal, Nicolas Meza, Martas, Aidan, Jha, Saurabh W., Janzen, Daryl, Subrayan, Bhagya, Howell, D. Andrew, McCully, Curtis, Farah, Joseph, Newsome, Megan, Gonzalez, Estefania Padilla, Terreran, Giacomo, Andrews, Moira, Filippenko, Alexei V., Brink, Thomas G., Zheng, Weikang, Yang, Yi, Vinko, Jozsef, Wheeler, J. Craig, Smith, Nathan, Rho, Jeonghee, Konyves-Toth, Reka, Gutierrez, Claudia P.
We present supernova (SN) 2023ufx, a unique Type IIP SN with the shortest known plateau duration ($t_\mathrm{PT}$ $\sim$47 days), a luminous V-band peak ($M_{V}$ = $-$18.42 $\pm$ 0.08 mag), and a rapid early decline rate ($s1$ = 3.47 $\pm$ 0.09 mag (
Externí odkaz:
http://arxiv.org/abs/2411.02493
Autor:
Pognan, Quentin, Wu, Meng-Ru, Martínez-Pinedo, Gabriel, da Silva, Ricardo Ferreira, Jerkstrand, Anders, Grumer, Jon, Flörs, Andreas
Neutron star (NS) mergers are known to produce heavy elements through rapid neutron capture (r-process) nucleosynthesis. Actinides are expected to be created solely by the r-process in the most neutron rich environments. Confirming if NS mergers prov
Externí odkaz:
http://arxiv.org/abs/2409.16210
Autor:
Schulze, Steve, Gal-Yam, Avishay, Dessart, Luc, Miller, Adam A., Woosley, Stan E., Yang, Yi, Bulla, Mattia, Yaron, Ofer, Sollerman, Jesper, Filippenko, Alexei V., Hinds, K-Ryan, Perley, Daniel A., Tsuna, Daichi, Lunnan, Ragnhild, Sarin, Nikhil, Brennan, Sean J., Brink, Thomas G., Bruch, Rachel J., Chen, Ping, Das, Kaustav K., Dhawan, Suhail, Fransson, Claes, Fremling, Christoffer, Gangopadhyay, Anjasha, Irani, Ido, Jerkstrand, Anders, Knezevic, Nikola, Kushnir, Doron, Maeda, Keiichi, Maguire, Kate, Ofek, Eran, Omand, Conor M. B., Qin, Yu-Jing, Sharma, Yashvi, Sit, Tawny, Srinivasaragavan, Gokul P., Strothjohann, Nora L., Takei, Yuki, Waxman, Eli, Yan, Lin, Yao, Yuhan, Zheng, WeiKang, Zimmerman, Erez A., Bellm, Eric C., Coughlin, Michael W., Masci, Frank. J., Purdum, Josiah, Rigault, Mickael, Wold, Avery, Kulkarni, Shrinivas R.
The cores of stars are the cosmic furnaces where light elements are fused into heavier nuclei. The fusion of hydrogen to helium initially powers all stars. The ashes of the fusion reactions are then predicted to serve as fuel in a series of stages, e
Externí odkaz:
http://arxiv.org/abs/2409.02054
Autor:
Temim, Tea, Laming, J. Martin, Kavanagh, P. J., Smith, Nathan, Slane, Patrick, Blair, William P., De Looze, Ilse, Bucciantini, Niccolò, Jerkstrand, Anders, Gountanis, Nicole Marcelina, Sankrit, Ravi, Milisavljevic, Dan, Rest, Armin, Lyutikov, Maxim, DePasquale, Joseph, Martin, Thomas, Drissen, Laurent, Raymond, John, Fox, Ori D., Modjaz, Maryam, Spitkovsky, Anatoly, Strolger, Lou
We present JWST observations of the Crab Nebula, the iconic remnant of the historical SN 1054. The observations include NIRCam and MIRI imaging mosaics, plus MIRI/MRS IFU spectra that probe two select locations within the ejecta filaments. We derive
Externí odkaz:
http://arxiv.org/abs/2406.00172
Understanding the explosion mechanism and hydrodynamic evolution of core-collapse supernovae is a long-standing quest in astronomy. The asymmetries caused by the explosion are encoded into the line profiles which appear in the nebular phase of the SN
Externí odkaz:
http://arxiv.org/abs/2404.01763
Autor:
Barmentloo, Stan, Jerkstrand, Anders, Iwamoto, Koichi, Hachisu, Izumi, Nomoto, Ken'ichi, Sollerman, Jesper, Woosley, Stan
Nitrogen is produced by CNO-cycling in massive stars, and can be ejected in significant amounts in supernova explosions. While in H-rich SNe, its [\ion{N}{II}] 6548, 6583 emission becomes obscured by strong H$\alpha$, in explosions of He stars, this
Externí odkaz:
http://arxiv.org/abs/2403.08911
Autor:
Sharma, Yashvi, Sollerman, Jesper, Kulkarni, Shrinivas R., Moriya, Takashi J., Schulze, Steve, Barmentloo, Stan, Fausnaugh, Michael, Gal-Yam, Avishay, Jerkstrand, Anders, Ahumada, Tomás, Bellm, Eric C., Das, Kaustav K., Drake, Andrew, Fremling, Christoffer, Hall, Saarah, Hinds, K. R., Laz, Theophile Jegou du, Karambelkar, Viraj, Kasliwal, Mansi M., Masci, Frank J., Miller, Adam A., Nir, Guy, Perley, Daniel A., Purdum, Josiah N., Qin, Yu-Jing, Rehemtulla, Nabeel, Rich, R. Michael, Riddle, Reed L., Rodriguez, Antonio C., Rose, Sam, Somalwar, Jean, Wise, Jacob L., Wold, Avery, Yan, Lin, Yao, Yuhan
Multi-peaked supernovae with precursors, dramatic light-curve rebrightenings, and spectral transformation are rare, but are being discovered in increasing numbers by modern night-sky transient surveys like the Zwicky Transient Facility (ZTF). Here, w
Externí odkaz:
http://arxiv.org/abs/2402.02780
Autor:
Fiore, Achille, Benetti, Stefano, Tartaglia, Leonardo, Jerkstrand, Anders, Salmaso, Irene, Tomasella, Lina, Morales-Garoffolo, Antonia, Geier, Stefan, Elias-Rosa, Nancy, Cappellaro, Enrico, Wang, Xiaofeng, Mo, Jun, Chen, Zhihao, Yan, Shengyu, Pastorello, Andrea, Mazzali, Paolo A., Ciolfi, Riccardo, Cai, Yongzhi, Fraser, Morgan, Gutiérrez, Claudia P., Karamehmetoglu, Emir, Kuncarayakti, Hanindyo, Moran, Shane, Ochner, Paolo, Reguitti, Andrea, Reynolds, Thomas M., Valerin, Giorgio
SN 2019neq was a very fast evolving superluminous supernova. At a redshift z=0.1059, its peak absolute magnitude was -21.5+/-0.2 mag in g band. In this work, we present data and analysis from an extensive spectrophotometric follow-up campaign using m
Externí odkaz:
http://arxiv.org/abs/2311.13940
The electromagnetic transient following a binary neutron star merger is known as a kilonova (KN). Owing to rapid expansion velocities and small ejecta masses, KNe rapidly transition into the Non-Local Thermodynamic Equilibrium (NLTE) regime. In this
Externí odkaz:
http://arxiv.org/abs/2309.01134
Autor:
Aamer, Aysha, Nicholl, Matt, Jerkstrand, Anders, Gomez, Sebastian, Oates, Samantha R., Smartt, Stephen J., Srivastav, Shubham, Leloudas, Giorgos, Anderson, Joseph P., Berger, Edo, de Boer, Thomas, Chambers, Kenneth, Chen, Ting-Wan, Galbany, Lluís, Gao, Hua, Gompertz, Benjamin P., González-Bañuelos, Maider, Gromadzki, Mariusz, Gutiérrez, Claudia P., Inserra, Cosimo, Lowe, Thomas B., Magnier, Eugene A., Mazzali, Paolo A., Moore, Thomas, Müller-Bravo, Tomás E., Pursiainen, Miika, Rest, Armin, Schulze, Steve, Smith, Ken W., Terwel, Jacco H., Wainscoat, Richard, Young, David R.
Publikováno v:
Volume 527, (2024), Pages 11970-11995
We present a detailed study on SN2019szu, a Type I superluminous supernova at $z=0.213$, that displayed unique photometric and spectroscopic properties. Pan-STARRS and ZTF forced photometry shows a pre-explosion plateau lasting $\sim$ 40 days. Unlike
Externí odkaz:
http://arxiv.org/abs/2307.02487