Zobrazeno 1 - 10
of 3 081
pro vyhledávání: '"Dhawan, S."'
Autor:
Andreoni, Igor, Margutti, Raffaella, Banovetz, John, Greenstreet, Sarah, Hebert, Claire-Alice, Lister, Tim, Palmese, Antonella, Piranomonte, Silvia, Smartt, S. J., Smith, Graham P., Stein, Robert, Ahumada, Tomas, Anand, Shreya, Auchettl, Katie, Bannister, Michele T., Bellm, Eric C., Bloom, Joshua S., Bolin, Bryce T., Bom, Clecio R., Brethauer, Daniel, Brucker, Melissa J., Buckley, David A. H., Chandra, Poonam, Chornock, Ryan, Christensen, Eric, Cooke, Jeff, Corsi, Alessandra, Coughlin, Michael W., Cuevas-Otahola, Bolivia, Filippo, D'Ammando, Dai, Biwei, Dhawan, S., Filippenko, Alexei V., Foley, Ryan J., Franckowiak, Anna, Gomboc, Andreja, Gompertz, Benjamin P., Guy, Leanne P., Hazra, Nandini, Hernandez, Christopher, Hosseinzadeh, Griffin, Hussaini, Maryam, Ibrahimzade, Dina, Izzo, Luca, Jones, R. Lynne, Kang, Yijung, Kasliwal, Mansi M., Knight, Matthew, Kunnumkai, Keerthi, Lamb, Gavin P, LeBaron, Natalie, Lejoly, Cassandra, Levan, Andrew J., MacBride, Sean, Mallia, Franco, Malz, Alex I., Miller, Adam A., Mora, J. C., Narayan, Gautham, J., Nayana A., Nicholl, Matt, Nichols, Tiffany, Oates, S. R., Panayada, Akshay, Ragosta, Fabio, Ribeiro, Tiago, Ryczanowski, Dan, Sarin, Nikhil, Schwamb, Megan E., Sears, Huei, Seligman, Darryl Z., Sharma, Ritwik, Shrestha, Manisha, Simran, Stroh, Michael C., Terreran, Giacomo, Thakur, Aishwarya Linesh, Trivedi, Aum, Tyson, J. Anthony, Utsumi, Yousuke, Verma, Aprajita, Villar, V. Ashley, Volk, Kathryn, Vyas, Meet J., Wasserman, Amanda R., Wheeler, J. Craig, Yoachim, Peter, Zegarelli, Angela, Bianco, Federica
The Legacy Survey of Space and Time (LSST) at Vera C. Rubin Observatory is planned to begin in the Fall of 2025. The LSST survey cadence has been designed via a community-driven process regulated by the Survey Cadence Optimization Committee (SCOC), w
Externí odkaz:
http://arxiv.org/abs/2411.04793
Autor:
Dimitriadis, G., Burgaz, U., Deckers, M., Maguire, K., Johansson, J., Smith, M., Rigault, M., Frohmaier, C., Sollerman, J., Galbany, L., Kim, Y. -L., Liu, C., Miller, A. A., Nugent, P. E., Alburai, A., Chen, P., Dhawan, S., Ginolin, M., Goobar, A., Groom, S. L., Harvey, L., Kenworthy, W. D., Kulkarni, S. R., Popovic, B., Riddle, R. L., Rusholme, B., Muller-Bravo, T. E., Nordin, J., Terwel, J. H., Townsend, A.
The Zwicky Transient Facility SN Ia Data Release 2 (ZTF SN Ia DR2) contains more than 3,000 Type Ia supernovae (SNe Ia), providing the largest homogeneous low-redshift sample of SNe Ia. Having at least one spectrum per event, this data collection is
Externí odkaz:
http://arxiv.org/abs/2409.04200
Autor:
Dhawan, S., Pierel, J. D. R., Gu, M., Newman, A. B., Larison, C., Siebert, M., Petrushevska, T., Poidevin, F., Jha, S. W., Chen, W., Ellis, Richard S., Frye, B., Hjorth, J., Koekemoer, Anton M., Pérez-Fournon, I., Rest, A., Treu, T., Windhorst, R. A., Zenati, Y.
Strong gravitational lensing magnifies the light from a background source, allowing us to study these sources in detail. Here, we study the spectra of a $z = 1.95$ lensed Type Ia supernova SN~Encore for its brightest Image A, taken 39 days apart. We
Externí odkaz:
http://arxiv.org/abs/2407.16492
Autor:
Burgaz, U., Maguire, K., Dimitriadis, G., Harvey, L., Senzel, R., Sollerman, J., Nordin, J., Galbany, L., Rigault, M., Smith, M., Goobar, A., Johansson, J., Rosnet, P., Amenouche, M., Deckers, M., Dhawan, S., Ginolin, M., Kim, Y. -L., Miller, A. A., Muller-Bravo, T. E., Nugent, P. E., Terwel, J. H., Dekany, R., Drake, A., Graham, M. J., Groom, S. L., Kasliwal, M. M., Kulkarni, S. R., Nolan, K., Nir, G., Riddle, R. L., Rusholme, B., Sharma, Y.
More than 3000 spectroscopically confirmed Type Ia supernovae (SNe Ia) are presented in the Zwicky Transient Facility SN Ia Data Release 2 (ZTF DR2). In this paper, we detail the spectral properties of 482 SNe Ia near maximum light, up to a redshift
Externí odkaz:
http://arxiv.org/abs/2407.06828
Autor:
Deckers, M., Maguire, K., Shingles, L., Dimitriadis, G., Rigault, M., Smith, M., Goobar, A., Nordin, J., Johansson, J., Amenouche, M., Burgaz, U., Dhawan, S., Ginolin, M., Harvey, L., Kenworthy, W. D., Kim, Y. -L., Laher, R. R., Luo, N., Kulkarni, S. R., Masci, F. J., Müller-Bravo, T. E., Nugent, P. E., Pletskova, N., Purdum, J., Racine, B., Sollerman, J., Terwel, J. H.
Type Ia supernova (SN Ia) light curves have a secondary maximum that exists in the $r$, $i$, and near-infrared filters. The secondary maximum is relatively weak in the $r$ band, but holds the advantage that it is accessible, even at high redshift. We
Externí odkaz:
http://arxiv.org/abs/2406.19460
Autor:
Rigault, M., Smith, M., Regnault, N., Kenworthy, D. W., Maguire, K., Goobar, A., Dimitriadis, G., Amenouche, M., Aubert, M., Barjou-Delayre, C., Bellm, C. E., Burgaz, U., Carreres, B., Copin, Y., Deckers, M., de Jaeger, T., Dhawan, S., Feinstein, F., Fouchez, D., Galbany, L., Ginolin, M., Graham, J. M., Kim, Y. -L., Kowalski, M., Kuhn, D., Kulkarni, R. S., Muller-Bravo, E. T., Nordin, K., Popovic, M., Purdum, J., Rosnet, P., Rosselli, D., Racine, B., Ruppin, F., Sollerman, J., Terwel, H. J., Townsend, A.
Type Ia supernova (SN Ia) cosmology relies on the estimation of lightcurve parameters to derive precision distances that leads to the estimation of cosmological parameters. The empirical SALT2 lightcurve modeling that relies on only two parameters, a
Externí odkaz:
http://arxiv.org/abs/2406.02073
Autor:
Ginolin, M., Rigault, M., Copin, Y., Popovic, B., Dimitriadis, G., Goobar, A., Johansson, J., Maguire, K., Nordin, J., Smith, M., Aubert, M., Barjou-Delayre, C., Burgaz, U., Carreres, B., Dhawan, S., Deckers, M., Feinstein, F., Fouchez, D., Galbany, L., Ganot, C., de Jaeger, T., Kim, Y. -L., Kuhn, D., Lacroix, L., Müller-Bravo, T. E., Nugent, P., Racine, B., Rosnet, P., Rosselli, D., Ruppin, F., Sollerman, J., Terwel, J. H., Townsend, A., Dekany, R., Graham, M., Kasliwal, M., Groom, S. L., Purdum, J., Rusholme, B., van der Walt, S.
As Type Ia supernova cosmology transitions from a statistics dominated to a systematics dominated era, it is crucial to understand leftover unexplained uncertainties affecting their luminosity, such as the ones stemming from astrophysical biases. Ind
Externí odkaz:
http://arxiv.org/abs/2406.02072
Autor:
Dhawan, S., Mortsell, E., Johansson, J., Goobar, A., Rigault, M., Smith, M., Maguire, K., Nordin, J., Dimitriadis, G., Nugent, P. E., Galbany, L., Sollerman, J., de Jaeger, T., Terwel, J. H., Kim, Y. -L., Burgaz, Umut, Helou, G., Purdum, J., Groom, S. L., Laher, R., Healy, B.
Understanding Type Ia supernovae (SNe~Ia) and the empirical standardisation relations that make them excellent distance indicators is vital to improving cosmological constraints. SN~Ia ``siblings", i.e. two or more SNe~Ia in the same host or parent g
Externí odkaz:
http://arxiv.org/abs/2406.01434
Autor:
Ginolin, M., Rigault, M., Smith, M., Copin, Y., Ruppin, F., Dimitriadis, G., Goobar, A., Johansson, J., Maguire, K., Nordin, J., Amenouche, M., Aubert, M., Barjou-Delayre, C., Betoule, M., Burgaz, U., Carreres, B., Deckers, M., Dhawan, S., Feinstein, F., Fouchez, D., Galbany, L., Ganot, C., Harvey, L., de Jaeger, T., Kenworthy, W. D., Kim, Y. -L., Kowalski, M., Kuhn, D., Lacroix, L., Muller-Bravo, T. E., Nugent, P., Popovic, B., Racine, B., Rosnet, P., Rosselli, D., Sollerman, J., Terwel, J. H., Townsend, A., Brugger, J., Bellm, E. C., Kasliwal, M. M., Kulkarni, S., Laher, R. R., Masci, F. J., Riddle, R. L., Sharma, Y.
To get distances, Type Ia Supernovae magnitudes are corrected for their correlation with lightcurve width and colour. Here we investigate how this standardisation is affected by the SN environment, with the aim to reduce scatter and improve standardi
Externí odkaz:
http://arxiv.org/abs/2405.20965
Autor:
Carreres, B., Rosselli, D., Bautista, J. E., Feinstein, F., Fouchez, D., Racine, B., Ravoux, C., Sanchez, B., Dimitriadis, G., Goobar, A., Johansson, J., Nordin, J., Rigault, M., Smith, M., Amenouche, M., Aubert, M., Barjou-Delayre, C., Burgaz, U., Kenworthy, W. D'Arcy, De Jaeger, T., Dhawan, S., Galbany, L., Ginolin, M., Kuhn, D., Kowalski, M., Müller-Bravo, T. E., Nugent, P. E., Popovic, B., Rosnet, P., Ruppin, F., Sollerman, J., Terwel, J. H., Townsend, A., Groom, S. L., Kulkarni, S. R., Purdum, J., Rusholme, B., Sravan, N.
SNe Ia are used to determine the distance-redshift relation and build the Hubble diagram. Neglecting their host-galaxy peculiar velocities (PVs) may bias the measurement of cosmological parameters. The smaller the redshift, the larger the effect is.
Externí odkaz:
http://arxiv.org/abs/2405.20409