Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Marsh, Tom R"'
Autor:
Toloza, O., Gaensicke, Boris T., Guzman-Rincon, Laura M., Marsh, Tom R., Szkody, Paula, Schreiber, Matthias R., de Martino, Domitilla, Zorotovic, Monica, El-Badry, Kareem, Koester, Detlev, Lagos, Felipe
Some white dwarfs accreting from non-degenerate companions show anomalous carbon and nitrogen abundances in the photospheres of their stellar components which have been postulated to be descendants of supersoft X-ray binaries. Therefore the carbon-to
Externí odkaz:
http://arxiv.org/abs/2209.06873
Autor:
Doyle, J. Gerry, Irawati, Puji, Kolotkov, Dmitrii Y., Ramsay, Gavin, Nhalil, Nived Vilangot, Dhillon, Vik S., Marsh, Tom R., Yadav, Ram Kesh
Using the ULTRASPEC instrument mounted on the 2.4-m Thai National Telescope, we observed two large flares, each with a total energy close to 10^34 erg with sub-second cadence. A combination of a wavelet analysis, a Fourier transform plus an empirical
Externí odkaz:
http://arxiv.org/abs/2206.08070
Autor:
Brown, Alex J., Parsons, Steven G., Littlefair, Stuart P., Wild, James F., Ashley, Richard P., Breedt, Elme, Dhillon, Vik S., Dyer, Martin J., Green, Matthew J., Kerry, Paul, Marsh, Tom R., Pelisoli, Ingrid, Sahman, Dave I.
With the prevalence of wide-field, time-domain photometric sky surveys, the number of eclipsing white dwarf systems being discovered is increasing dramatically. An efficient method to follow these up will be key to determining any population trends a
Externí odkaz:
http://arxiv.org/abs/2204.05155
Autor:
Stringer, James G., Breton, Rene P., Clark, Colin J., Voisin, Guillaume, Kennedy, Mark R., Sànchez, Daniel Mata, Shahbaz, Tariq, Dhillon, Vik S., van Kerkwijk, Marten, Marsh, Tom R.
We present ULTRACAM multiband optical photometry of two transitional millisecond pulsars, PSR J1023+0038 and PSR J1227$-$4853, taken while both were in their radio pulsar states. The light curves show significant asymmetry about the flux maxima in al
Externí odkaz:
http://arxiv.org/abs/2107.11306
Autor:
Hollands, Mark A., Tremblay, Pier-Emmanuel, Gänsicke, Boris T., Camisassa, María E., Koester, Detlev, Aungwerojwit, Amornrat, Chote, Paul, Córsico, Alejandro H., Dhillon, Vik S., Gentile-Fusillo, Nicola P., Hoskin, Matthew J., Izquierdo, Paula, Marsh, Tom R., Steeghs, Danny
White dwarfs are dense, cooling stellar embers consisting mostly of carbon and oxygen, or oxygen and neon (with a few percent carbon) at higher initial stellar masses. These stellar cores are enveloped by a shell of helium which in turn is usually su
Externí odkaz:
http://arxiv.org/abs/2003.00028
Autor:
Colón, Knicole D., Zhou, George, Shporer, Avi, Collins, Karen A., Bieryla, Allyson, Espinoza, Néstor, Murgas, Felipe, Pattarakijwanich, Petchara, Awiphan, Supachai, Armstrong, James D., Bailey, Jeremy, Barentsen, Geert, Bayliss, Daniel, Chakpor, Anurak, Cochran, William D., Dhillon, Vikram S., Horne, Keith, Ireland, Michael, Kedziora-Chudczer, Lucyna, Kielkopf, John F., Komonjinda, Siramas, Latham, David W., Marsh, Tom. R., Mkrtichian, David E., Pallé, Enric, Ruffolo, David, Sefako, Ramotholo, Tinney, Chris G., Wannawichian, Suwicha, Yuma, Suraphong
We present 45 ground-based photometric observations of the K2-22 system collected between December 2016 and May 2017, which we use to investigate the evolution of the transit of the disintegrating planet K2-22b. Last observed in early 2015, in these
Externí odkaz:
http://arxiv.org/abs/1809.06978
Autor:
Gandhi, Poshak, Bachetti, Matteo, Dhillon, Vik S., Fender, Robert P., Hardy, Liam K., Harrison, Fiona A., Littlefair, Stuart P., Malzac, Julien, Markoff, Sera, Marsh, Tom R., Mooley, Kunal, Stern, Daniel, Tomsick, John A., Walton, Dominic J., Casella, Piergiorgio, Vincentelli, Federico, Altamirano, Diego, Casares, Jorge, Ceccobello, Chiara, Charles, Phil A., Ferrigno, Carlo, Hynes, Robert I., Knigge, Christian, Kuulkers, Erik, Pahari, Mayukh, Rahoui, Farid, Russell, David M., Shaw, Aarran W.
Relativistic plasma jets are observed in many accreting black holes. According to theory, coiled magnetic fields close to the black hole accelerate and collimate the plasma, leading to a jet being launched. Isolating emission from this acceleration a
Externí odkaz:
http://arxiv.org/abs/1710.09838
Autor:
Hardy, Liam K, Dhillon, Vik S, Spitler, Laura G, Littlefair, Stuart P, Ashley, Richard P, De Cia, Annalisa, Green, Matthew J, Jaroenjittichai, Phrudth, Keane, Evan F, Kerry, Paul, Kramer, Michael, Malesani, Daniele, Marsh, Tom R, Parsons, Steven G, Possenti, Andrea, Rattanasoon, Somsawat, Sahman, David I
We present a search for optical bursts from the repeating fast radio burst FRB 121102 using simultaneous observations with the high-speed optical camera ULTRASPEC on the 2.4-m Thai National Telescope and radio observations with the 100-m Effelsberg R
Externí odkaz:
http://arxiv.org/abs/1708.06156
Autor:
Kupfer, Thomas, van Roestel, Jan, Brooks, Jared, Geier, Stephan, Marsh, Tom R., Groot, Paul J., Bloemen, Steven, Prince, Thomas A., Bellm, Eric, Heber, Ulrich, Bildsten, Lars, Miller, Adam A., Dyer, Martin J., Dhillon, Vik S., Green, Matthew, Irawati, Puji, Laher, Russ, Littlefair, Stuart P., Shupe, David L., Steidel, Charles C., Rattansoon, Somsawat, Pettini, Max
We present the discovery of the hot subdwarf B star (sdB) binary PTF1 J082340.04+081936.5. The system has an orbital period P$_{\rm orb}=87.49668(1)$ min (0.060761584(10) days), making it the second-most compact sdB binary known. The lightcurve shows
Externí odkaz:
http://arxiv.org/abs/1612.02019
Autor:
Hardy, Liam K, McAllister, Martin J, Dhillon, Vik S, Littlefair, Stuart P, Bours, Madelon C P, Breedt, Elme, Butterley, Tim, Chakpor, Anurak, Irawati, Puji, Kerry, Paul, Marsh, Tom R, Parsons, Steven G, Savoury, Chris D J, Wilson, Richard W, Woudt, Patrick A
We present new time-resolved photometry of 74 cataclysmic variables (CVs), 47 of which are eclipsing. 13 of these eclipsing systems are newly discovered. For all 47 eclipsing systems we show high cadence (1-20 seconds) light curves obtained with the
Externí odkaz:
http://arxiv.org/abs/1611.07885