Results 41 to 50 of about 7,751,768 (367)

PELICAN: deeP architecturE for the LIght Curve ANalysis [PDF]

Astronomy & Astrophysics, 2019
We developed a deeP architecturE for the LIght Curve ANalysis (PELICAN) for the characterization and the classification of supernovae light curves. It takes light curves as input, without any additional features.
Johanna Pasquet, J. Pasquet, M. Chaumont, D. Fouchez   +3 more
semanticscholar   +1 more source

Type IIn supernova light-curve properties measured from an untargeted survey sample [PDF]

Astronomy & Astrophysics, 2019
The evolution of a Type IIn supernova (SN IIn) is governed by the interaction between the SN ejecta and a hydrogen-rich circumstellar medium. The SNe IIn thus allow us to probe the late-time mass-loss history of their progenitor stars.
A. Nyholm, J. Sollerman, L. Tartaglia, F. Taddia, C. Fremling, N. Blagorodnova, A. Filippenko, A. Gal-yam, D. Howell, E. Karamehmetoglu, S. Kulkarni, R. Laher, G. Leloudas, F. Masci, M. Kasliwal, K. Mora, T. Moriya, E. Ofek, S. Papadogiannakis, R. Quimby, U. Rebbapragada, S. Schulze   +21 more
semanticscholar   +1 more source

Seeing Double: ASASSN-18bt Exhibits a Two-component Rise in the Early-time K2 Light Curve [PDF]

Astrophysical Journal, 2018
On 2018 February 4.41, the All-Sky Automated Survey for SuperNovae (ASAS-SN) discovered ASASSN-18bt in the K2 Campaign 16 field. With a redshift of z = 0.01098 and a peak apparent magnitude of Bmax = 14.31, ASASSN-18bt is the nearest and brightest SNe Ia
B. Shappee, T. Holoien, M. Drout, K. Auchettl, M. Stritzinger, C. Kochanek, K. Stanek, E. Shaya, G. Narayan, J. Brown, S. Bose, D. Bersier, J. Brimacombe, Ping Chen, S. Dong, S. Holmbo, B. Katz, J. Munnoz, R. Mutel, R. Post, J. Prieto, J. Shields, D. Tallon, T. Thompson, P. Vallely, S. Villanueva, L. Denneau, H. Flewelling, A. Heinze, K. Smith, B. Stalder, J. Tonry, H. Weiland, T. Barclay, G. Barentsen, A. Cody, J. Dotson, F. Foerster, P. Garnavich, M. Gully-Santiago, C. Hedges, S. Howell, D. Kasen, S. Margheim, R. Mushotzky, A. Rest, B. Tucker, A. Villar, A. Zenteno, G. Beerman, R. Bjella, G. Castillo, J. Coughlin, B. Elsaesser, S. Flynn, R. Gangopadhyay, K. Griest, M. Hanley, J. Kampmeier, R. Kloetzel, L. Kohnert, C. Labonde, R. Larsen, K. Larson, K. Mccalmont-everton, C. Mcginn, L. Migliorini, J. Moffatt, M. Muszynski, V. Nystrom, D. Osborne, M. Packard, C. Peterson, M. Redick, L. Reedy, S. Ross, B. Spencer, K. Steward, J. Cleve, J. V. M. Cardoso, T. Weschler, A. Wheaton, J. Bulger, T. Lowe, E. Magnier, A. Schultz, C. Waters, M. Willman, E. Baron, Zhihao Chen, J. DerKacy, F. Huang, Linyi Li, Wenxiong Li, Xia Li, L. Rui, H. Sai, Lifan Wang, Lingzhi Wang, Xiaofeng Wang, D. Xiang, Jicheng Zhang, Jujia Zhang, Kaicheng Zhang, Tianmeng Zhang, Xinghan Zhang, Xulin Zhao, P. Brown, J. Hermes, J. Nordin, S. Points, G. Strampelli   +111 more
semanticscholar   +1 more source

Classical Machine Learning Techniques in the Search of Extrasolar Planets

CLEI Electronic Journal, 2019
The field of astronomical data analysis has experienced an important paradigm shift in the recent years. The automation of certain analysis procedures is no longer a desirable feature for reducing the human effort, but a must have asset for coping with ...
Francisco Alejandro Mena, Margarita Constanza Bugueño, Mauricio Araya   +2 more
doaj   +1 more source

Terrestrial Exoplanet Light Curves [PDF]

Proceedings of the International Astronomical Union, 2005
The phase or orbital light curves of extrasolar terrestrial planets in reflected or emitted light will contain information about their atmospheres and surfaces complementary to data obtained by other techniques such as spectrosopy. We show calculated light curves at optical and thermal infrared wavelengths for a variety of Earth-like and Earth-unlike ...
Nicholas Moskovitz, Darren M. Williams, Eric Gaidos   +2 more
openaire   +3 more sources

K2 Observations of SN 2018oh Reveal a Two-component Rising Light Curve for a Type Ia Supernova [PDF]

Astrophysical Journal, 2018
We present an exquisite 30 minute cadence Kepler (K2) light curve of the Type Ia supernova (SN Ia) 2018oh (ASASSN-18bt), starting weeks before explosion, covering the moment of explosion and the subsequent rise, and continuing past peak brightness. These
G. Dimitriadis, R. Foley, A. Rest, D. Kasen, A. Piro, A. Polin, D. Jones, A. Villar, G. Narayan, D. A. Coulter, C. Kilpatrick, Y. Pan, C. Rojas-Bravo, O. Fox, S. Jha, P. Nugent, A. Riess, D. Scolnic, M. Drout, G. Barentsen, J. Dotson, M. Gully-Santiago, C. Hedges, A. Cody, T. Barclay, S. Howell, P. Garnavich, B. Tucker, E. Shaya, R. Mushotzky, R. Olling, S. Margheim, A. Zenteno, J. Coughlin, J. Cleve, J. V. De Miranda Cardoso, K. Larson, K. Mccalmont-everton, C. Peterson, S. Ross, L. Reedy, D. Osborne, C. Mcginn, L. Kohnert, L. Migliorini, A. Wheaton, B. Spencer, C. Labonde, G. Castillo, G. Beerman, K. Steward, M. Hanley, R. Larsen, R. Gangopadhyay, R. Kloetzel, T. Weschler, V. Nystrom, J. Moffatt, M. Redick, K. Griest, M. Packard, M. Muszynski, J. Kampmeier, R. Bjella, S. Flynn, B. Elsaesser, K. Chambers, H. Flewelling, M. Huber, E. Magnier, C. Waters, A. Schultz, J. Bulger, T. Lowe, M. Willman, S. Smartt, K. Smith, S. Points, G. Strampelli, J. Brimacombe, P. Chen, J. A. Muñoz, R. Mutel, J. Shields, P. Vallely, S. Villanueva, W. Li, X. Wang, J. Zhang, H. Lin, J. Mo, X. Zhao, H. Sai, X. Zhang, Kecheng Zhang, T. Zhang, L. Wang, J. Zhang, E. Baron, J. DerKacy, L. Li, Z. Chen, D. Xiang, L. Rui, L. Wang, F. Huang, X. Li, G. Hosseinzadeh, D. Howell, I. Arcavi, D. Hiramatsu, J. Burke, S. Valenti, J. Tonry, L. Denneau, A. Heinze, H. Weiland, B. Stalder, J. Vinkó, K. Sárneczky, A. Pál, A. Bódi, Zs. Bognár, B. Csák, B. Cseh, G. Csörnyei, O. Hanyecz, B. Ignácz, Cs. Kalup, R. Könyves-Tóth, L. Kriskovics, A. Ordasi, I. Rajmon, Á. Sódor, R. Szabó, R. Szakáts, G. Zsidi, S. Williams, J. Nordin, R. Cartier, C. Frohmaier, L. Galbany, C. Gutiérrez, I. Hook, C. Inserra, M. Smith, D. Sand, J. Andrews, N. Smith, C. Bilinski   +149 more
semanticscholar   +1 more source

Supernova light-curve fitters and Dark Energy [PDF]

, 2010
We show that when a procedure is made to remove the tension between a supernova Ia (SN Ia) data set and observations from BAO and CMB, there might be the case where the same SN Ia set built with two different light-curve fitters behaves as two separate ...
Amanullah, Bengochea, Bengochea, Bueno Sanchez, Caldwell, Davis, Eisenstein, Frieman, Frieman, Gabriel R. Bengochea, Guy, Hicken, Huterer, Huterer, Jha, Kessler, Komatsu, Komatsu, Kowalski, Li, Nesseris, Nesseris, Padmanabhan, Percival, Perivolaropoulos, Perlmutter, Perlmutter, Phillips, Pigozzo, Riess, Riess, Riess, Sahni, Smale, Sollerman, Wei   +35 more
core   +2 more sources

Superluminous Supernovae in LSST: Rates, Detection Metrics, and Light-curve Modeling [PDF]

Astrophysical Journal, 2018
We explore and demonstrate the capabilities of the upcoming Large Synoptic Survey Telescope (LSST) to study Type I superluminous supernovae (SLSNe). We fit the light curves of 58 known SLSNe at z ≈ 0.1–1.6, using a magnetar spin-down model.
V. Villar, M. Nicholl, E. Berger
semanticscholar   +1 more source

The 72-Hour WEBT Microvariability Observation of Blazar S5 0716+714 in 2009 [PDF]

, 2013
Context. The international whole earth blazar telescope (WEBT) consortium planned and carried out three days of intensive micro-variability observations of S5 0716+714 from February 22, 2009 to February 25, 2009.
Bachev, R., Bhatta, G., Blinov, D. A., Bottcher, M., Calcidese, P., Calle, O. J. A. Bravo, Capezzali, D., Carosati, D., Chigladze, R., Collins, A., Coloma, J. M., Dhalla, S., Efimov, Y., Gupta, A. C., Hollingsworth, H., Hu, S-M., Khanuja, A., Kurtanidze, O., Lamerato, A., Larionov, V. M., Lee, C. -U., Lindfors, E., Murphy, B., Nilsson, K., Ohlert, J. M., Oksanen, A., Paakkonen, P., Pollock, J. T., Rani, B., Reinthal, R., Rodriguez, D., Ros, J. A., Roustazadeh, P., Sagar, R., Sanchez, A., Shastri, P., Sillanpaa, A., Strigachev, A., Takalo, L., Vennes, S., Villata, M., Villforth, C., Webb, J. R., Wu, J., Zhou, X.   +44 more
core   +2 more sources

The Magnetar Model for Type I Superluminous Supernovae. I. Bayesian Analysis of the Full Multicolor Light-curve Sample with MOSFiT [PDF]

, 2017
We use the new Modular Open Source Fitter for Transients to model 38 hydrogen-poor superluminous supernovae (SLSNe). We fit their multicolor light curves with a magnetar spin-down model and present posterior distributions of magnetar and ejecta ...
M. Nicholl, J. Guillochon, E. Berger
semanticscholar   +1 more source