Results 1 to 10 of about 166,732 (180)

Ultrafast strong-field dissociation of vinyl bromide: An attosecond transient absorption spectroscopy and non-adiabatic molecular dynamics study

Structural Dynamics, 2021
Attosecond extreme ultraviolet (XUV) and soft x-ray sources provide powerful new tools for studying ultrafast molecular dynamics with atomic, state, and charge specificity.
Florian Rott, Maurizio Reduzzi, Thomas Schnappinger, Yuki Kobayashi, Kristina F. Chang, Henry Timmers, Daniel M. Neumark, Regina de Vivie-Riedle, Stephen R. Leone   +8 more
doaj   +2 more sources

A Swift Response to Newly Discovered, Nearby Transients

Universe, 2023
The Neil Gehrels Swift Observatory has proven to be an extraordinary supernova (SN) observatory. The clearest application of Swift’s unique strengths is obtaining very early UV and X-ray data of young SNe, which enables robust constraints on their ...
Peter J. Brown, Macie Robertson, Yaswant Devarakonda, Emily Sarria, David Pooley, Maximilian D. Stritzinger   +5 more
doaj   +1 more source

Live to Die Another Day: The Rebrightening of AT 2018fyk as a Repeating Partial Tidal Disruption Event

The Astrophysical Journal Letters, 2023
Stars that interact with supermassive black holes (SMBHs) can be either completely or partially destroyed by tides. In a partial tidal disruption event (TDE), the high-density core of the star remains intact, and the low-density outer envelope of the ...
T. Wevers, E. R. Coughlin, D. R. Pasham, M. Guolo, Y. Sun, S. Wen, P. G. Jonker, A. Zabludoff, A. Malyali, R. Arcodia, Z. Liu, A. Merloni, A. Rau, I. Grotova, P. Short, Z. Cao   +15 more
doaj   +1 more source

SN 2022acko: The First Early Far-ultraviolet Spectra of a Type IIP Supernova

The Astrophysical Journal Letters, 2023
We present five far- and near-ultraviolet spectra of the Type II plateau supernova, SN 2022acko, obtained 5, 6, 7, 19, and 21 days after explosion, all observed with the Hubble Space Telescope/Space Telescope Imaging Spectrograph.
K. Azalee Bostroem, Luc Dessart, D. John Hillier, Michael Lundquist, Jennifer E. Andrews, David J. Sand, Yize Dong, Stefano Valenti, Joshua Haislip, Emily T. Hoang, Griffin Hosseinzadeh, Daryl Janzen, Jacob E. Jencson, Saurabh W. Jha, Vladimir Kouprianov, Jeniveve Pearson, Nicolas E. Meza Retamal, Daniel E. Reichart, Manisha Shrestha, Christopher Ashall, E. Baron, Peter J. Brown, James M. DerKacy, Joseph Farah, Lluís Galbany, J. I. González Hernández, Elizabeth Green, Peter Hoeflich, D. Andrew Howell, Lindsey A. Kwok, Curtis McCully, Tomás E. Müller-Bravo, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Jeonghee Rho, Micalyn Rowe, Michaela Schwab, Melissa Shahbandeh, Nathan Smith, Jay Strader, Giacomo Terreran, Schuyler D. Van Dyk, Samuel Wyatt   +43 more
doaj   +1 more source

Pan-STARRS1 Discovery of Two Ultra-Luminous Supernovae at z ~ 0.9 [PDF]

, 2011
We present the discovery of two ultra-luminous supernovae (SNe) at z ~ 0.9 with the Pan-STARRS1 Medium-Deep Survey. These SNe, PS1-10ky and PS1-10awh, are amongst the most luminous SNe ever discovered, comparable to the unusual transients SN 2005ap and ...
A. M. Soderberg, A. Rest, A. Riess, Abazajian, Barbary, C. W. Stubbs, Chatzopoulos, Chevalier, Chevalier, Chevalier, Contardo, D. C. Martin, Drout, E. A. Magnier, E. Berger, Faber, Foley, Frail, Frail, G. Narayan, Gaensler, Gezari, Gänsicke, H. Flewelling, Hogg, I. Czekala, Immler, Ivezic, J. D. Neill, J. L. Tonry, J. S. Morgan, Jeffery, K. C. Chambers, K. C. Roth, K. Forster, Kasen, Katz, Kewley, Kocevski, L. Chomiuk, M. E. Huber, MacFadyen, Magnier, Malesani, Miller, Mink, Modjaz, N. E. Sanders, N. Kaiser, Nakar, Neill, Nugis, Ofek, Onaka, P. A. Price, Pastorello, Perley, Quimby, R. A. Chevalier, R. Chornock, R. J. Foley, R. J. Wainscoat, R. P. Kirshner, R.-P. Kudritzki, Rest, S. A. Rodney, S. Gezari, S. J. Smartt, Schlegel, Shklovskii, Smith, Smith, Smith, Stoll, Stubbs, Tonry, Tremonti, van der Horst, W. M. Wood-Vasey, W. S. Burgett, Woosley, York   +81 more
core   +5 more sources

Ultrafast Dynamics of Excited Electronic States in Nitrobenzene Measured by Ultrafast Transient Polarization Spectroscopy. [PDF]

, 2019
We investigate ultrafast dynamics of the lowest singlet excited electronic state in liquid nitrobenzene using ultrafast transient polarization spectroscopy, extending the well-known technique of optical Kerr effect spectroscopy to excited electronic ...
Bakhti, Said, Belkacem, Ali, Brister, Matthew M, Champenois, Elio G, Muddukrishna, Pavan, Shivaram, Niranjan, Slaughter, Daniel S, Tan, Liang Z, Thurston, Richard, Weber, Thorsten   +9 more
core   +2 more sources

Core-collapse Supernova Explosions in Active Galactic Nucleus Accretion Disks

The Astrophysical Journal, 2023
Astrophysical events that occur in active galactic nucleus (AGN) disks are believed to differ significantly from the ordinary in the interstellar medium.
Fu-Lin Li, Yu Liu, Xiao Fan, Mao-Kai Hu, Xuan Yang, Jin-Jun Geng, Xue-Feng Wu   +6 more
doaj   +1 more source

Intermediate Palomar Transient Factory: Realtime Image Subtraction Pipeline [PDF]

, 2016
A fast-turnaround pipeline for realtime data reduction plays an essential role in discovering and permitting follow-up observations to young supernovae and fast-evolving transients in modern time-domain surveys.
Cao, Yi, Kasliwal, Mansi M, Nugent, Peter E   +2 more
core   +2 more sources

Light Curves of the Neutron Star Merger GW170817/SSS17a: Implications for R-Process Nucleosynthesis [PDF]

, 2017
On 2017 August 17, gravitational waves were detected from a binary neutron star merger, GW170817, along with a coincident short gamma-ray burst, GRB170817A.
Adams, C., Alatalo, K., Baughman, J., Bañados, E., Beers, T. C., Bernstein, R. A., Bidin, C. Moni, Bitsakis, T., Boutsia, K., Campillay, A., Contreras, C., Coulter, D. A., Di Mille, F., Drout, M. R., Foley, R. J., Hansen, T. T., Higgs, C. R., Holoien, T. W. -S., Ji, A. P., Kasen, D., Kilpatrick, C. D., Kollmeier, J. A., Madore, B. F., Maravelias, G., Marshall, J. L., Monson, A. J., Morrell, N., Murguia-Berthier, A., Pan, Y. -C., Piro, A. L., Prieto, J. L., Prochaska, J. X., Ramirez-Ruiz, E., Rasmussen, K. C., Rest, A., Rojas-Bravo, C., Shappee, B. J., Siebert, M. R., Simon, J. D., Strom, A. L., Ulloa, N., Vargas-González, J., Wan, Z., Whitten, D. D.   +43 more
core   +2 more sources

A Tidal Flare Candidate in Abell 1795 [PDF]

, 2013
As part of our ongoing archival X-ray survey of galaxy clusters for tidal flares, we present evidence of an X-ray transient source within 1 arcmin of the core of Abell 1795. The extreme variability (a factor of nearly 50), luminosity (> 2 x 10^42 erg s^{-
Eracleous, M. C., Guennou, L., Ho, L. C., Maksym, W. P., Ulmer, M. P.   +4 more
core   +3 more sources