Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Harper, Ryan"'
We reanalyse the Pantheon+ supernova catalogue to compare a cosmology with non-FLRW evolution, the "timescape cosmology", with the standard $\Lambda$CDM cosmology. To this end, we consider the Pantheon+ supernova catalogue, which is the largest avail
Externí odkaz:
http://arxiv.org/abs/2311.01438
Autor:
Kareta, Theodore, Thomas, Cristina, Li, Jian-Yang, Knight, Matthew M., Moskovitz, Nicholas, Rozek, Agata, Bannister, Michele T., Ieva, Simone, Snodgrass, Colin, Pravec, Petr, Ryan, Eileen V., Ryan, William H., Fahnestock, Eugene G., Rivkin, Andrew S., Chabot, Nancy, Fitzsimmons, Alan, Osip, David, Lister, Tim, Sarid, Gal, Hirabayashi, Masatoshi, Farnham, Tony, Tancredi, Gonzalo, Michel, Patrick, Wainscoat, Richard, Weryk, Rob, Burrati, Bonnie, Pittichova, Jana, Ridden-Harper, Ryan, Tan, Nicole J., Tristram, Paul, Brown, Tyler, Bonavita, Mariangela, Burgdorf, Martin, Khalouei, Elahe, Longa, Penelope, Rabus, Markus, Sajadian, Sedighe, Jorgensen, Uffe Graae, Dominik, Martin, Kikwaya, Jean-Baptiste, Epifani, Elena Mazzotta, Dotto, Elisabetta, Deshapriya, J. D. Prasanna, Hasselmann, Pedro H., Dall'Ora, Massimo, Abe, Lyu, Guillot, Tristan, Mekarnia, Djamel, Agabi, Abdelkrim, Bendjoya, Philippe, Suarez, Olga, Triaud, Amaury, Gasparetto, Thomas, Gunther, Maximillian N., Kueppers, Michael, Merin, Bruno, Chatelain, Joseph, Gomez, Edward, Usher, Helen, Stoddard-Jones, Cai, Bartnik, Matthew, Bellaver, Michael, Chetan, Brenna, Dugan, Emma, Fallon, Tori, Fedewa, Jeremy, Gerhard, Caitlyn, Jacobson, Seth A., Painter, Shane, Peterson, David-Michael, Rodriguez, Joseph E., Smith, Cody, Sokolovsky, Kirill V., Sullivan, Hannah, Townley, Kate, Watson, Sarah, Webb, Levi, Trigo-Rodrıguez, Josep M., Llenas, Josep M., Perez-Garcıa, Ignacio, Castro-Tirado, A. J., Vincent, Jean-Baptiste, Migliorini, Alessandra, Lazzarin, Monica, La Forgia, Fiorangela, Ferrari, Fabio, Polakis, Tom, Skiff, Brian
The impact of the DART spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos' orbit substantially, largely from the ejection of material. We present results from twelve Earth-based facilities involved in a world-wide campaign to
Externí odkaz:
http://arxiv.org/abs/2310.12089
Autor:
Partoush, Roee, Rest, Armin, Jencson, Jacob E., Poznanski, Dovi, Foley, Ryan J., Kilpatrick, Charles D., Andrews, Jennifer E., Angulo, Rodrigo, Badenes, Carles, Bianco, Federica B., Filippenko, Alexei V., Ridden-Harper, Ryan, Li, Xiaolong, Margheim, Steve, Matheson, Thomas, Olsen, Knut A. G., Siebert, Matthew R., Smith, Nathan, Welch, Douglas L., Zenteno, A.
Light echoes give us a unique perspective on the nature of supernovae and non-terminal stellar explosions. Spectroscopy of light echoes can reveal details on the kinematics of the ejecta, probe asymmetry, and reveal details on its interaction with ci
Externí odkaz:
http://arxiv.org/abs/2310.01501
Autor:
Boyle, Rebecca, Littlefield, Colin, Garnavich, Peter, Ridden-Harper, Ryan, Szkody, Paula, Boyd, Patricia, Smith, Krista Lynne
We investigate K2BS5, an optical transient that we identified in Campaign 13 of the Kepler/K2 archives by the "K2 Background Survey", and classify it as a new SU UMa-type dwarf nova. Using the light curve generated from Kepler's long-cadence observat
Externí odkaz:
http://arxiv.org/abs/2309.12396
Autor:
Roxburgh, Hugh, Ridden-Harper, Ryan, Lane, Zachary G., Rest, Armin, Hubley, Lancia, Hounsell, Rebekah, Wang, Qinan, Gomez, Sebastian, Guolo, Muryel, Rest, Sofia, von Coelln, Sophie
Gamma-ray bursts produce afterglows that can be observed across the electromagnetic spectrum and can provide insight into the nature of their progenitors. While most telescopes that observe afterglows are designed to rapidly react to trigger informat
Externí odkaz:
http://arxiv.org/abs/2307.11294
Autor:
Wang, Qinan, Rest, Armin, Dimitriadis, Georgios, Ridden-harper, Ryan, Siebert, Matthew R., Magee, Mark, Angus, Charlotte R., Auchettl, Katie, Davis, Kyle W., Foley, Ryan J., Fox, Ori D., Gomez, Sebastian, Jencson, Jacob E., Jones, David O., Kilpatrick, Charles D., Pierel, Justin D. R., Piro, Anthony L., Polin, Abigail, Politsch, Collin A., Rojas-bravo, César, Shahbandeh, Melissa, Villar, V. Ashley, Zenati, Yossef, Ashall, C., Chambers, Kenneth C., Coulter, David A., De Boer, Thomas, Dilullo, Nico, Gall, Christa, Gao, Hua, Hsiao, Eric Y., Huber, Mark E., Izzo, Luca, Khetan, Nandita, Lebaron, Natalie, Magnier, Eugene A., Mandel, Kaisey S., Mcgill, Peter, Miao, Hao-yu, Pan, Yen-chen, Stevens, Catherine P., Swift, Jonathan J., Taggart, Kirsty, Yang, Grace
We present high-cadence ultraviolet through near-infrared observations of the Type Ia supernova (SN Ia) 2023bee in NGC~2708 ($D = 32 \pm 3$ Mpc), finding excess flux in the first days after explosion relative to the expected power-law rise from an ex
Externí odkaz:
http://arxiv.org/abs/2305.03779
Autor:
Dimitriadis, Georgios, Maguire, Kate, Karambelkar, Viraj R., Lebron, Ryan J., Liu, Chang, Kozyreva, Alexandra, Miller, Adam A., Ridden-Harper, Ryan, Anderson, Joseph P., Chen, Ting-Wan, Coughlin, Michael, Della Valle, Massimo, Drake, Andrew, Galbany, Lluís, Gromadzki, Mariusz, Groom, Steven L., Gutiérrez, Claudia P., Ihanec, Nada, Inserra, Cosimo, Johansson, Joel, Müller-Bravo, Tomás E., Nicholl, Matt, Polin, Abigail, Rusholme, Ben, Schulze, Steve, Sollerman, Jesper, Srivastav, Shubham, Taggart, Kirsty, Wang, Qinan, Yang, Yi, Young, David R.
We present a photometric and spectroscopic analysis of the ultra-luminous and slowly evolving 03fg-like Type Ia SN 2021zny. Our observational campaign starts from $\sim5.3$ hours after explosion (making SN 2021zny one of the earliest observed members
Externí odkaz:
http://arxiv.org/abs/2302.08228
Autor:
Andreoni, Igor, Coughlin, Michael W., Perley, Daniel A., Yao, Yuhan, Lu, Wenbin, Cenko, S. Bradley, Kumar, Harsh, Anand, Shreya, Ho, Anna Y. Q., Kasliwal, Mansi M., Postigo, Antonio de Ugarte, Sagues-Carracedo, Ana, Schulze, Steve, Kann, D. Alexander, Kulkarni, S. R., Sollerman, Jesper, Tanvir, Nial, Rest, Armin, Izzo, Luca, Somalwar, Jean J., Kaplan, David L., Ahumada, Tomas, Anupama, G. C., Auchettl, Katie, Barway, Sudhanshu, Bellm, Eric C., Bhalerao, Varun, Bloom, Joshua S., Bremer, Michael, Bulla, Mattia, Burns, Eric, Campana, Sergio, Chandra, Poonam, Charalampopoulos, Panos, Cooke, Jeff, D'Elia, Valerio, Das, Kaustav Kashyap, Dobie, Dougal, Fernández, José Feliciano Agüí, Freeburn, James, Fremling, Cristoffer, Gezari, Suvi, Goode, Simon, Graham, Matthew, Hammerstein, Erica, Karambelkar, Viraj R., Kilpatrick, Charles D., Kool, Erik C., Krips, Melanie, Laher, Russ R., Leloudas, Giorgos, Levan, Andrew, Lundquist, Michael J., Mahabal, Ashish A., Medford, Michael S., Miller, M. Coleman, Möller, Anais, Mooley, Kunal, Nayana, A. J., Nir, Guy, Pang, Peter T. H., Paraskeva, Emmy, Perley, Richard A., Petitpas, Glen, Pursiainen, Miika, Ravi, Vikram, Ridden-Harper, Ryan, Riddle, Reed, Rigault, Mickael, Rodriguez, Antonio C., Rusholme, Ben, Sharma, Yashvi, Smith, I. A., Stein, Robert D., Thöne, Christina, Tohuvavohu, Aaron, Valdes, Frank, van Roestel, Jan, Vergani, Susanna D., Wang, Qinan, Zhang, Jielai
Tidal disruption events (TDEs) are bursts of electromagnetic energy released when supermassive black holes (SMBHs) at the centers of galaxies violently disrupt a star that passes too close. TDEs provide a new window to study accretion onto SMBHs; in
Externí odkaz:
http://arxiv.org/abs/2211.16530
Autor:
Wang, Qinan, Armstrong, Patrick, Zenati, Yossef, Ridden-Harper, Ryan, Rest, Armin, Arcavi, Iair, Kilpatrick, Charles D., Foley, Ryan J., Tucker, Brad E., Lidman, Chris, Killestein, Thomas L., Shahbandeh, Melissa, Anderson, Joseph P, Ashall, Chris, Burke, Jamison, Chen, Ting-wan, Dalrymple, Kyle A., Davis, Kyle W., Fulton, Michael D., Galbany, Lluís, Gromadzki, Mariusz, Ihanec, Nada, Jencson, Jacob E., Jones, David O., Lyman, Joseph D., Müller-bravo, Tomás E., Newsome, Megan, Nicholl, Matt, O'neill, David, Pellegrino, Craig, Rest, Sofia, Smartt, Stephen J., Smith, Ken, Srivastav, Shubham, Tinyanont, Samaporn, Young, David R., Zenteno, Alfredo
We present early observations and analysis of the double-peaked Type IIb supernova (SN IIb) 2021zby. $TESS$ captured the prominent early shock cooling peak of SN 2021zby within the first $\sim$10 days after explosion with a 30-minute cadence. We pres
Externí odkaz:
http://arxiv.org/abs/2211.03811