Results 11 to 20 of about 185 (62)

Bioverse: Potentially Observable Exoplanet Biosignature Patterns under the UV Threshold Hypothesis for the Origin of Life [PDF]

The Astrophysical Journal
A wide variety of scenarios for the origin of life have been proposed, with many influencing the prevalence and distribution of biosignatures across exoplanet populations.
Martin Schlecker, Dániel Apai, Antonin Affholder, Sukrit Ranjan, Régis Ferrière, Kevin K. Hardegree-Ullman, Tim Lichtenberg, Stéphane Mazevet   +7 more
doaj   +2 more sources

Systematic search for gamma-ray periodicity in active galactic nuclei detected by the Fermi Large Area Telescope [PDF]

, 2020
We use nine years of gamma-ray data provided by the Fermi Large Area Telescope (LAT) to systematically study the light curves of more than two thousand active galactic nuclei (AGN) included in recent Fermi-LAT catalogs. Ten different techniques are used,
Ajello, M., Barrio, J. A., Buson, S., Cavazzuti, E., Cutini, S., Domínguez, A., Franckowiak, A., Nemmen, R., Otero-Santos, J., Peñil, P., Rani, B.   +10 more
core   +3 more sources

Statistical Methods in the Era of Large Astronomical Surveys [PDF]

, 2023
Statistical methods play a crucial role in modern astronomical research. The development and understanding of these methods will be of fundamental importance to future work on large astronomical surveys.
Hughes, Arvind Christopher Nagarajah
core   +1 more source

TD-CARMA: Painless, accurate, and scalable estimates of gravitational-lens time delays with flexible CARMA processes [PDF]

, 2022
Cosmological parameters encoding our current understanding of the expansion history of the Universe can be constrained by the accurate estimation of time delays arising in gravitationally lensed systems. We propose TD-CARMA, a Bayesian method to estimate
Meyer, Antoine D., Siemiginowska, Aneta, Tak, Hyungsuk, van Dyk, David A.   +3 more
core   +2 more sources

The Overlooked Potential of Generalized Linear Models in Astronomy - I: Binomial Regression [PDF]

, 2015
Revealing hidden patterns in astronomical data is often the path to fundamental scientific breakthroughs; meanwhile the complexity of scientific inquiry increases as more subtle relationships are sought.
Biffi, V., Cameron, E., Ciardi, B., de Souza, R. S., Hilbe, J., Killedar, M., Maio, U., Riggs, J. D., Vilalta, R.   +8 more
core   +2 more sources

Are tiled display walls needed for astronomy? [PDF]

, 2014
Clustering commodity displays into a Tiled Display Wall (TDW) provides a cost-effective way to create an extremely high resolution display, capable of approaching the image sizes now gen- erated by modern astronomical instruments.
Fluke, Christopher J, Manos, Steven, Meade, Bernard F, Sinnott, Richard O   +3 more
core   +1 more source

Metropolis-Hastings within Partially Collapsed Gibbs Samplers [PDF]

, 2014
The Partially Collapsed Gibbs (PCG) sampler offers a new strategy for improving the convergence of a Gibbs sampler. PCG achieves faster convergence by reducing the conditioning in some of the draws of its parent Gibbs sampler.
Jiao, Xiyun, van Dyk, David A.
core   +2 more sources

EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade [PDF]

, 2021
Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the direct detection of gravitational waves with LIGO and Virgo, and many ...
Amin, M. A., Barenboim, G., Bartolo, N., Batista, R. Alves, Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertolami, M. M. Miller, Bertone, G., Blasi, P., Bošnjak, Ž., Bringmann, T., Burrage, C., Bustamante, M., Bustillo, J. Calderón, Byrnes, C. T., Böhmer, C. G., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Dietrich, T., Domènech, G., Drewes, M., Edwards, T. D. P., Erdem, R., Esteban, I., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Gaggero, D., Galatyuk, T., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Khalifeh, A. Rida, Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Millington, P., Moesta, P., Nippel, K., Niro, V., O'Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pascoli, S., Pfrommer, C., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raccanelli, A., Raffelt, G. G., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Riotto, A., Roiban, R., Rubio, J., Sabti, N., Sagunski, L., Sahlén, M., Said, J. Levi, Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., van Vliet, A., Vernizzi, F., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., Zeng, M., Šarčević, N.   +136 more
core   +4 more sources

Multivariate Approaches to Classification in Extragalactic Astronomy [PDF]

, 2015
Clustering objects into synthetic groups is a natural activity of any science. Astrophysics is not an exception and is now facing a deluge of data. For galaxies, the one-century old Hubble classification and the Hubble tuning fork are still largely in ...
Chattopadhyay, Asis Kumar, Fraix-Burnet, Didier, Thuillard, Marc   +2 more
core   +3 more sources

A new modification nonlinear conjugate gradient method with strong wolf-powell line search [PDF]

, 2020
The conjugate gradient method has played a special role in   solving large-scale unconstrained Optimization problems. In this paper, we propose a new family of CG coefficients that   possess    sufficient descent conditions and global convergence ...
Ahmed, Chergui, Tahar, Bouali
core   +2 more sources