Zobrazeno 1 - 10
of 1 312
pro vyhledávání: '"Steeghs, D."'
VY Scl binaries are a sub-class of cataclysmic variable (CV) which show extended low states, but do not show outbursts which are seen in other classes of CV. To better determine how often these systems spend in low states and to resolve the state tra
Externí odkaz:
http://arxiv.org/abs/2411.07744
Autor:
Pursiainen, M., Killestein, T. L., Kuncarayakti, H., Charalampopoulos, P., Lyman, J., Kotak, R., Leloudas, G., Coppejans, D., Kravtsov, T., Maeda, K., Nagao, T., Taguchi, K., Ackley, K., Dhillon, V. S., Galloway, D. K., Kumar, A., O'Neill, D., Steeghs, D.
We present the analysis of optical data of a bright and extremely-rapidly evolving transient, AT2024wpp, whose properties are similar to the enigmatic AT2018cow (aka the Cow). AT2024wpp rose to a peak brightness of c=-21.9mag in 4.3d and remained abo
Externí odkaz:
http://arxiv.org/abs/2411.03272
Autor:
Warwick, B., Lyman, J., Pursiainen, M., Coppejans, D. L., Galbany, L., Jones, G. T., Killestein, T. L., Kumar, A., Oates, S. R., Ackley, K., Anderson, J. P., Aryan, A., Breton, R. P., Chen, T. W., Clark, P., Dhillon, V. S., Dyer, M. J., Gal-Yam, A., Galloway, D. K., Gutiérrez, C. P., Gromadzki, M., Inserra, C., Jiménez-Ibarra, F., Kelsey, L., Kotak, R., Kravtsov, T., Kuncarayakti, H., Magee, M. R., Matilainen, K., Mattila, S., Müller-Bravo, T. E., Nicholl, M., Noysena, K., Nuttall, L. K., O'Brien, P., O'Neill, D., Pallé, E., Pessi, T., Petrushevska, T., Pignata, G., Pollacco, D., Ragosta, F., Ramsay, G., Sahu, A., Sahu, D. K., Singh, A., Sollerman, J., Stanway, E., Starling, R., Steeghs, D., Teja, R. S., Ulaczyk, K.
SN 2023tsz is a Type Ibn supernova (SNe Ibn) discovered in an extremely low-mass host. SNe Ibn are an uncommon subtype of stripped-envelope core-collapse SNe. They are characterised by narrow helium emission lines in their spectra and are believed to
Externí odkaz:
http://arxiv.org/abs/2409.14147
Autor:
Gandhi, P., Borowski, E. S., Byrom, J., Hynes, R. I., Maccarone, T. J., Shaw, A. W., Adegoke, O. K., Altamirano, D., Baglio, M. C., Bhargava, Y., Britt, C. T., Buckley, D. A. H., Buisson, D. J. K., Casella, P., Segura, N. Castro, Charles, P. A., Corral-Santana, J. M., Dhillon, V. S., Fender, R., Gúrpide, A., Heinke, C. O., Igl, A. B., Knigge, C., Markoff, S., Mastroserio, G., McCollough, M. L., Middleton, M., Miller, J. M., Miller-Jones, J. C. A., Motta, S. E., Paice, J. A., Pawar, D. D., Plotkin, R. M., Pradhan, P., Ressler, M. E., Russell, D. M., Russell, T. D., Santos-Sanz, P., Shahbaz, T., Sivakoff, G. R., Steeghs, D., Tetarenko, A. J., Tomsick, J. A., Vincentelli, F. M., George, M., Gurwell, M., Rao, R.
We present mid-infrared (MIR) spectral-timing measurements of the prototypical Galactic microquasar GRS 1915+105. The source was observed with the Mid-Infrared Instrument (MIRI) onboard JWST in June 2023 at a MIR luminosity L(MIR)~10^{36} erg/s excee
Externí odkaz:
http://arxiv.org/abs/2406.18637
Autor:
Saito, R. K., Hempel, M., Alonso-García, J., Lucas, P. W., Minniti, D., Alonso, S., Baravalle, L., Borissova, J., Caceres, C., Chené, A. N., Cross, N. J. G., Duplancic, F., Garro, E. R., Gómez, M., Ivanov, V. D., Kurtev, R., Luna, A., Majaess, D., Navarro, M. G., Pullen, J. B., Rejkuba, M., Sanders, J. L., Smith, L. C., Albino, P. H. C., Alonso, M. V., Amôres, E. B., Angeloni, R., Arias, J. I., Arnaboldi, M., Barbuy, B., Bayo, A., Beamin, J. C., Bedin, L. R., Bellini, A., Benjamin, R. A., Bica, E., Bonatto, C. J., Botan, E., Braga, V. F., Brown, D. A., Cabral, J. B., Camargo, D., Garatti, A. Caratti o, Carballo-Bello, J. A., Catelan, M., Chavero, C., Chijani, M. A., Clariá, J. J., Coldwell, G. V., Peña, C. Contreras, Ramos, R. Contreras, Corral-Santana, J. M., Cortés, C. C., Cortés-Contreras, M., Cruz, P., Daza-Perilla, I. V., Debattista, V. P., Dias, B., Donoso, L., D'Souza, R., Emerson, J. P., Federle, S., Fermiano, V., Fernandez, J., Fernández-Trincado, J. G., Ferreira, T., Lopes, C. E. Ferreira, Firpo, V., Flores-Quintana, C., Fraga, L., Froebrich, D., Galdeano, D., Gavignaud, I., Geisler, D., Gerhard, O. E., Gieren, W., Gonzalez, O. A., Gramajo, L. V., Gran, F., Granitto, P. M., Griggio, M., Guo, Z., Gurovich, S., Hilker, M., Jones, H. R. A., Kammers, R., Kuhn, M. A., Kumar, M. S . N., Kundu, R., Lares, M., Libralato, M., Lima, E., Maccarone, T. J., Cortés, P. Marchant, Martin, E. L., Masetti, N., Matsunaga, N., Mauro, F., McDonald, I., Mejías, A., Mesa, V., Milla-Castro, F. P., Minniti, J. H., Bidin, C. Moni, Montenegro, K., Morris, C., Motta, V., Navarete, F., Molina, C. Navarro, Nikzat, F., Castellón, J. L. Nilo, Obasi, C., Ortigoza-Urdaneta, M., Palma, T., Parisi, C., Ramírez, K. Pena, Pereyra, L., Perez, N., Petralia, I., Pichel, A., Pignata, G., Alegría, S. Ramírez, Rojas, A. F., Rojas, D., Roman-Lopes, A., Rovero, A. C., Saroon, S., Schmidt, E. O., Schröder, A. C., Schultheis, M., Sgró, M. A., Solano, E., Soto, M., Stecklum, B., Steeghs, D., Tamura, M., Tissera, P., Valcarce, A. A. R., Valotto, C. A., Vasquez, S., Villalon, C., Villanova, S., Cádiz, F. Vivanco, Bacigalupo, R. Zelada, Zijlstra, A., Zoccali, M.
Publikováno v:
A&A 689, A148 (2024)
The ESO public survey VISTA Variables in the V\'ia L\'actea (VVV) surveyed the inner Galactic bulge and the adjacent southern Galactic disk from $2009-2015$. Upon its conclusion, the complementary VVV eXtended (VVVX) survey has expanded both the temp
Externí odkaz:
http://arxiv.org/abs/2406.16646
Autor:
Killestein, T. L., Kelsey, L., Wickens, E., Nuttall, L., Lyman, J., Krawczyk, C., Ackley, K., Dyer, M. J., Jiménez-Ibarra, F., Ulaczyk, K., O'Neill, D., Kumar, A., Steeghs, D., Galloway, D. K., Dhillon, V. S., O'Brien, P., Ramsay, G., Noysena, K., Kotak, R., Breton, R. P., Pallé, E., Pollacco, D., Awiphan, S., Belkin, S., Chote, P., Clark, P., Coppejans, D., Duffy, C., Eyles-Ferris, R., Godson, B., Gompertz, B., Graur, O., Irawati, P., Jarvis, D., Julakanti, Y., Kennedy, M. R., Kuncarayakti, H., Levan, A., Littlefair, S., Magee, M., Mandhai, S., Sánchez, D. Mata, Mattila, S., McCormac, J., Mullaney, J., Munday, J., Patel, M., Pursiainen, M., Rana, J., Sawangwit, U., Stanway, E., Starling, R., Warwick, B., Wiersema, K.
Time-domain astrophysics continues to grow rapidly, with the inception of new surveys drastically increasing data volumes. Democratised, distributed approaches to training sets for machine learning classifiers are crucial to make the most of this tor
Externí odkaz:
http://arxiv.org/abs/2406.02334
Autor:
Pattie, E. C., Maccarone, T. J., Britt, C. T., Heinke, C. O., Jonker, P. G., Lorimer, D. R., Sivakoff, G. R., Steeghs, D., Strader, J., Torres, M. A. P., Wijnands, R.
We present the results of a high angular resolution (1.1") and sensitivity (maximum of ~0.1 mJy) radio survey at 1-2 GHz in the Galactic Bulge. This complements the X-ray Chandra Galactic Bulge Survey, and investigates the full radio source populatio
Externí odkaz:
http://arxiv.org/abs/2405.04626
Doppler Tomography as a tool for characterising exoplanet atmospheres II: an analysis of HD 179949 b
Autor:
Matthews, S. M., Watson, C. A., de Mooij, E. J. W., Marsh, T. R., Brogi, M., Merritt, S. R., Smith, K. W., Steeghs, D.
High-resolution Doppler spectroscopy provides an avenue to study the atmosphere of both transiting and non-transiting planets. This powerful method has also yielded some of the most robust atmospheric detections to date. Currently, high-resolution Do
Externí odkaz:
http://arxiv.org/abs/2404.05652
Autor:
Hennessy, A., Starling, R. L. C., Rowlinson, A., de Ruiter, I., Kumar, A., Eyles-Ferris, R. A. J., Ror, A. K., Anderson, G. E., Gourdji, K., van der Horst, A. J., Pandey, S. B., Shimwell, T. W., Steeghs, D., Stylianou, N., ter Veen, S., Wiersema, K., Wijers, R. A. M. J.
Publikováno v:
MNRAS, 526, 106-117 (2023)
The composition of relativistic gamma-ray burst (GRB) jets and their emission mechanisms are still debated, and they could be matter or magnetically dominated. One way to distinguish these mechanisms arises because a Poynting flux dominated jet may p
Externí odkaz:
http://arxiv.org/abs/2308.16121
Autor:
Levan, A., Gompertz, B. P., Salafia, O. S., Bulla, M., Burns, E., Hotokezaka, K., Izzo, L., Lamb, G. P., Malesani, D. B., Oates, S. R., Ravasio, M. E., Escorial, A. Rouco, Schneider, B., Sarin, N., Schulze, S., Tanvir, N. R., Ackley, K., Anderson, G., Brammer, G. B., Christensen, L., Dhillon, V. S., Evans, P. A., Fausnaugh, M., Fong, W. -F., Fruchter, A. S., Fryer, C., Fynbo, J. P. U., Gaspari, N., Heintz, K. E., Hjorth, J., Kennea, J. A., Kennedy, M. R., Laskar, T., Leloudas, G., Mandel, I., Martin-Carrillo, A., Metzger, B. D., Nicholl, M., Nugent, A., Palmerio, J. T., Pugliese, G., Rastinejad, J., Rhodes, L., Rossi, A., Smartt, S. J., Stevance, H. F., Tohuvavohu, A., van der Horst, A., Vergani, S. D., Watson, D., Barclay, T., Bhirombhakdi, K., Breedt, E., Breeveld, A. A., Brown, A. J., Campana, S., Chrimes, A. A., D'Avanzo, P., D'Elia, V., De Pasquale, M., Dyer, M. J., Galloway, D. K., Garbutt, J. A., Green, M. J., Hartmann, D. H., Jakobsson, P., Kerry, P., Langeroodi, D., Leung, J. K., Littlefair, S. P., Munday, J., O'Brien, P., Parsons, S. G., Pelisoli, I., Saccardi, A., Sahman, D. I., Salvaterra, R., Sbarufatti, B., Steeghs, D., Tagliaferri, G., Thöne, C. C., Postigo, A. de Ugarte, Kann, D. A.
The mergers of binary compact objects such as neutron stars and black holes are of central interest to several areas of astrophysics, including as the progenitors of gamma-ray bursts (GRBs), sources of high-frequency gravitational waves and likely pr
Externí odkaz:
http://arxiv.org/abs/2307.02098