Zobrazeno 1 - 10
of 479
pro vyhledávání: '"Garnavich, Peter"'
Autor:
Leichty, McKenna, Garnavich, Peter, Littlefield, Colin, Schwope, Axel D., Kurpas, Jan, Mason, Paul A., Beuermann, Klaus
We analyze 15 years of eclipse timings of the polar V808 Aur. The rapid ingress/egress of the white dwarf and bright accretion region provide timings as precise as a few tenths of a second for rapid cadence photometric data. We find that between 2015
Externí odkaz:
http://arxiv.org/abs/2402.16959
Autor:
Garnavich, Peter, Potter, Stephen B., Buckley, David A. H., van Dyk, Anke, Egbo, Daniel, Littlefield, Colin, Greiveldinger, Anousha
Analysis of AR Sco optical light curves spanning nine years show a secular change in the relative amplitudes of the beat pulse pairs generated by the two magnetic poles of its rotating white dwarf. Recent photometry now shows that the primary and sec
Externí odkaz:
http://arxiv.org/abs/2311.04967
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:
Siebert, Matthew R., Kwok, Lindsey A., Johansson, Joel, Jha, Saurabh W., Blondin, Stéphane, Dessart, Luc, Foley, Ryan J., Hillier, D. John, Larison, Conor, Pakmor, Rüdiger, Temim, Tea, Andrews, Jennifer E., Auchettl, Katie, Badenes, Carles, Barna, Barnabas, Bostroem, K. Azalee, Newman, Max J. Brenner, Brink, Thomas G., Bustamante-Rosell, María José, Camacho-Neves, Yssavo, Clocchiatti, Alejandro, Coulter, David A., Davis, Kyle W., Deckers, Maxime, Dimitriadis, Georgios, Dong, Yize, Farah, Joseph, Filippenko, Alexei V., Flörs, Andreas, Fox, Ori D., Garnavich, Peter, Gonzalez, Estefania Padilla, Graur, Or, Hambsch, Franz-Josef, Hosseinzadeh, Griffin, Howell, D. Andrew, Hughes, John P., Kerzendorf, Wolfgang E., Saux, Xavier K. Le, Maeda, Keiichi, Maguire, Kate, McCully, Curtis, Mihalenko, Cassidy, Newsome, Megan, O'Brien, John T., Pearson, Jeniveve, Pellegrino, Craig, Pierel, Justin D. R., Polin, Abigail, Rest, Armin, Rojas-Bravo, César, Sand, David J., Schwab, Michaela, Shahbandeh, Melissa, Shrestha, Manisha, Smith, Nathan, Strolger, Louis-Gregory, Szalai, Tamás, Taggart, Kirsty, Terreran, Giacomo, Terwel, Jacco H., Tinyanont, Samaporn, Valenti, Stefano, Vinkó, József, Wheeler, J. Craig, Yang, Yi, Zheng, Weikang, Ashall, Chris, Derkacy, James M., Galbany, Lluís, Hoeflich, Peter, Hsiao, Eric, De Jaeger, Thomas, Lu, Jing, Maund, Justyn, Medler, Kyle, Morrell, Nidia, Shappee, Benjamin J., Stritzinger, Maximilian, Suntzeff, Nicholas, Tucker, Michael, Wang, Lifan
Nebular-phase observations of peculiar Type Ia supernovae (SNe Ia) provide important constraints on progenitor scenarios and explosion dynamics for both these rare SNe and the more common, cosmologically useful SNe Ia. We present observations from an
Externí odkaz:
http://arxiv.org/abs/2308.12449
Autor:
Kwok, Lindsey A., Siebert, Matthew R., Johansson, Joel, Jha, Saurabh W., Blondin, Stephane, Dessart, Luc, Foley, Ryan J., Hillier, D. John, Larison, Conor, Pakmor, Ruediger, Temim, Tea, Andrews, Jennifer E., Auchettl, Katie, Badenes, Carles, Barna, Barnabas, Bostroem, K. Azalee, Newman, Max J. Brenner, Brink, Thomas G., Bustamante-Rosell, Maria Jose, Camacho-Neves, Yssavo, Clocchiatti, Alejandro, Coulter, David A., Davis, Kyle W., Deckers, Maxime, Dimitriadis, Georgios, Dong, Yize, Farah, Joseph, Filippenko, Alexei V., Flors, Andreas, Fox, Ori D., Garnavich, Peter, Gonzalez, Estefania Padilla, Graur, Or, Hambsch, Franz-Josef, Hosseinzadeh, Griffin, Howell, D. Andrew, Hughes, John P., Kerzendorf, Wolfgang E., Saux, Xavier K. Le, Maeda, Keiichi, Maguire, Kate, McCully, Curtis, Mihalenko, Cassidy, Newsome, Megan, O'Brien, John T., Pearson, Jeniveve, Pellegrino, Craig, Pierel, Justin D. R., Polin, Abigail, Rest, Armin, Rojas-Bravo, Cesar, Sand, David J., Schwab, Michaela, Shahbandeh, Melissa, Shrestha, Manisha, Smith, Nathan, Strolger, Louis-Gregory, Szalai, Tamas, Taggart, Kirsty, Terreran, Giacomo, Terwel, Jacco H., Tinyanont, Samaporn, Valenti, Stefano, Vinko, Jozsef, Wheeler, J. Craig, Yang, Yi, Zheng, WeiKang, Ashall, Chris, DerKacy, James M., Galbany, Lluis, Hoeflich, Peter, de Jaeger, Thomas, Lu, Jing, Maund, Justyn, Medler, Kyle, Morrell, Nidia, Shappee, Benjamin J., Stritzinger, Maximilian, Suntzeff, Nicholas, Tucker, Michael, Wang, Lifan
Publikováno v:
The Astrophysical Journal, Volume 966, Issue 1, id.135, 18 pp., May 2024
We present an analysis of ground-based and JWST observations of SN~2022pul, a peculiar "03fg-like" (or "super-Chandrasekhar") Type Ia supernova (SN Ia), in the nebular phase at 338d post explosion. Our combined spectrum continuously covers 0.4--14 $\
Externí odkaz:
http://arxiv.org/abs/2308.12450
Autor:
Littlefield, Colin, Mason, Paul A., Garnavich, Peter, Szkody, Paula, Thorstensen, John, Scaringi, Simone, Ilkiewicz, Krystian, Kennedy, Mark R., Wells, Natalie
When the accreting white dwarf in a magnetic cataclysmic variable star (mCV) has a field strength in excess of 10 MG, it is expected to synchronize its rotational frequency to the binary orbit frequency, particularly at small binary separations, due
Externí odkaz:
http://arxiv.org/abs/2301.05723
Autor:
Kwok, Lindsey A., Jha, Saurabh W., Temim, Tea, Fox, Ori D., Larison, Conor, Camacho-Neves, Yssavo, Newman, Max J. Brenner, Pierel, Justin D. R., Foley, Ryan J., Andrews, Jennifer E., Badenes, Carles, Barna, Barnabas, Bostroem, K. Azalee, Deckers, Maxime, Flors, Andreas, Garnavich, Peter, Graham, Melissa L., Graur, Or, Hosseinzadeh, Griffin, Howell, D. Andrew, Hughes, John P., Johansson, Joel, Kendrew, Sarah, Kerzendorf, Wolfgang E., Maeda, Keiichi, Maguire, Kate, McCully, Curtis, O'Brien, John T., Rest, Armin, Sand, David J., Shahbandeh, Melissa, Strolger, Louis-Gregory, Szalai, Tamas, Ashall, Chris, Baron, E., Burns, Chris R., DerKacy, James M., Evans, Tyco Mera, Fisher, Alec, Galbany, Lluis, Hoeflich, Peter, Hsiao, Eric, de Jaeger, Thomas, Karamehmetoglu, Emir, Krisciunas, Kevin, Kumar, Sahana, Lu, Jing, Maund, Justyn, Mazzali, Paolo A., Medler, Kyle, Morrell, Nidia, Phillips, Mark. M., Shappee, Benjamin J., Stritzinger, Maximilian, Suntzeff, Nicholas, Telesco, Charles, Tucker, Michael, Wang, Lifan
Publikováno v:
ApJL, Volume 944 L3, 2023
We present JWST near- and mid-infrared spectroscopic observations of the nearby normal Type Ia supernova SN 2021aefx in the nebular phase at $+255$ days past maximum light. Our Near Infrared Spectrograph (NIRSpec) and Mid Infrared Instrument (MIRI) o
Externí odkaz:
http://arxiv.org/abs/2211.00038
The Intermediate Polar FO Aquarii Has Not Been the Same Since Recovering from a Series of Low States
FO Aqr is a bright intermediate polar that has long displayed large amplitude photometric variations corresponding to the 20.9 min spin period of its white dwarf. Between 2016 and 2020, the system suffered a series of unprecedented low-states, but re
Externí odkaz:
http://arxiv.org/abs/2210.13492
Autor:
Mason, Paul A., Littlefield, Colin, Monroy, Lorena C., Morales, John F., Hakala, Pasi, Garnavich, Peter, Szkody, Paula, Kennedy, Mark R., Ramsay, Gavin, Scaringi, Simone
We present TESS photometry of the asynchronous polar BY Cam, which undergoes a beat-cycle between the 199.384-min white dwarf (WD) spin period and the 201.244-min orbital period. This results in changes in the flow of matter onto the WD. The TESS lig
Externí odkaz:
http://arxiv.org/abs/2209.05524
Publikováno v:
Research Notes of the American Astronomical Society, 6, 91 (2022)
We analyze two sectors of TESS photometry of the nova-like cataclysmic variable star V533 Her. We detect a periodicity consistent with the binary orbital period and estimate a revised value of 3.53709(2) hr. We also detect a strong signal near a peri
Externí odkaz:
http://arxiv.org/abs/2205.09176