Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Thorstensen, J R"'
Autor:
Greiveldinger, A., Garnavich, P., Littlefield, C., Kennedy, M. R., Halpern, J. P., Thorstensen, J. R., Szkody, P., Oksanen, A., Boyle, R. S.
We identify a previously undetected periodicity at a frequency of 49.08$\pm$0.01 d$^{-1}$ (period of 29.34$\pm$0.01 minutes) during a super-outburst of V844 Her observed by TESS. V844 Her is an SU UMa type cataclysmic variable with an orbital period
Externí odkaz:
http://arxiv.org/abs/2308.10344
Autor:
Inight, K., Gänsicke, Boris T., Schwope, A., Anderson, S. F., Badenes, C., Breedt, E., Chandra, V., Davies, B. D. R., Fusillo, N. P. Gentile, Green, M. J., Hermes, J. J., Huamani, I. Achaica, Hwang, H., Knauff, K., Kurpas, J., Long, K. S., Malanushenko, V., Morrison, S., C., I. J. Quiroz, Ramos, G. N. Aichele, Roman-Lopes, A., Schreiber, M. R., Standke, A., Stütz, L., Thorstensen, J. R., Toloza, O., Tovmassian, G., Zakamska, N. L.
Publikováno v:
2023MNRAS.525.3597I
SDSS-V is carrying out a dedicated survey for white dwarfs, single and in binaries, and we report the analysis of the spectroscopy of cataclysmic variables (CVs) and CV candidates obtained during the final plug plate observations of SDSS. We identify
Externí odkaz:
http://arxiv.org/abs/2305.13371
Autor:
Halpern, J. P., Thorstensen, J. R.
We conducted time-resolved optical spectroscopy and/or photometry of ten cataclysmic binaries that were discovered in hard X-ray surveys, with the goal of measuring their orbital periods and searching for evidence that they are magnetic. Four of the
Externí odkaz:
http://arxiv.org/abs/2110.07466
Autor:
Paterson, K., Woudt, P. A., Warner, B., Breytenbach, H., Gilligan, C. K., Motsoaledi, M., Thorstensen, J. R., Worters, H. L.
We present high-speed photometric observations of 25 cataclysmic variables detected by the All Sky Automated Search for Super-Novae (ASAS-SN), the Mobile Astronomical System of the TElescope-Robot (MASTER) and the Catalina Real-Time Transient Survey
Externí odkaz:
http://arxiv.org/abs/1903.11643
Autor:
Breytenbach, H., Buckley, D. A. H., Hakala, P., Thorstensen, J. R., Kniazev, A. Y., Motsoaledi, M., Woudt, P. A., Potter, S. B., Lipunov, V., Gorbovskoy, E., Balanutsa, P., Tyurina, N.
We report the discovery of a new eclipsing polar, MASTER OT J061451.70-272535.5, detected as an optical transient by MASTER auto-detection software at the recently commissioned MASTER-SAAO telescope. Time resolved (10-20 s) photometry with the SAAO 1
Externí odkaz:
http://arxiv.org/abs/1901.02669
Autor:
Halpern, J. P., Thorstensen, J. R., Cho, P., Collver, G., Motsoaledi, M., Breytenbach, H., Buckley, D. A. H., Woudt, P. A.
We conducted time-resolved optical spectroscopy and/or time-series photometry of 15 cataclysmic binaries that were discovered in hard X-ray surveys by the Swift Burst Alert Telescope (BAT) and the International Gamma-Ray Astrophysics Laboratory (INTE
Externí odkaz:
http://arxiv.org/abs/1804.08532
Autor:
Vennes, S., Nemeth, P., Kawka, A., Thorstensen, J. R., Khalack, V., Ferrario, L., Alper, E. H.
Publikováno v:
Science, 2017, Vol. 357, p. 680 - 683
Subluminous Type Ia supernovae, such as the Type Iax class prototype SN 2002cx, are described by a variety of models such as the failed detonation and partial deflagration of an accreting carbon-oxygen white dwarf star, or the explosion of an accreti
Externí odkaz:
http://arxiv.org/abs/1708.05568
Autor:
Rappaport, S., Vanderburg, A., Nelson, L., Gary, B. L., Kaye, T. G., Kalomeni, B., Howell, S. B., Thorstensen, J. R., Lachapelle, F. -R., Lundy, M., St-Antoine, J.
Among the 28,000 targeted stars in K2 Field 10 is the white dwarf WD 1202-024 (EPIC 201283111), first noted in the SDSS survey (SDSS 120515.80-024222.7). We have found that this hot white dwarf (Teff = 22,640 K) is in a very close orbit (P = 71 min)
Externí odkaz:
http://arxiv.org/abs/1705.05863
Autor:
Halpern, J. P., Thorstensen, J. R.
From a set of thirteen cataclysmic binaries that were discovered in the Swift Burst Alert Telescope (BAT) survey, we conducted time-resolved optical spectroscopy and/or time-series photometry of eleven, with the goal of measuring their orbital period
Externí odkaz:
http://arxiv.org/abs/1510.00703
Autor:
Holoien, T. W. -S., Kochanek, C. S., Prieto, J. L., Stanek, K. Z., Dong, Subo, Shappee, B. J., Grupe, D., Brown, J. S., Basu, U., Beacom, J. F., Bersier, D., Brimacombe, J., Danilet, A. B., Falco, E., Guo, Z., Jose, J., Herczeg, G. J., Long, F., Pojmanski, G., Simonian, G. V., Szczygiel, D. M., Thompson, T. A., Thorstensen, J. R., Wozniak, P. R.
Publikováno v:
MNRAS 455 (2016), 2918-2935
We present ground-based and Swift photometric and spectroscopic observations of the candidate tidal disruption event (TDE) ASASSN-14li, found at the center of PGC 043234 ($d\simeq90$ Mpc) by the All-Sky Automated Survey for SuperNovae (ASAS-SN). The
Externí odkaz:
http://arxiv.org/abs/1507.01598