Zobrazeno 1 - 10
of 21 518
pro vyhledávání: '"P Giuseppina"'
Context. The characterization of exoplanets requires a good description of the host star. Stellar activity acts as a source of noise which can alter planet radii as derived from the transit depth or atmospheric characterization. Aims. Here, we propos
Externí odkaz:
http://arxiv.org/abs/2412.10035
The paper is devoted to the optimal control of a system with two time-scales, in a regime when the limit equation is not of averaging type but, in the spirit of Wong-Zakai principle, it is a stochastic differential equation for the slow variable, wit
Externí odkaz:
http://arxiv.org/abs/2411.16491
Autor:
Arroyo-Polonio, José María, Battaglia, Giuseppina, Thomas, Guillaume F., Pascale, Raffaele, Tolstoy, Eline, Nipoti, Carlo
Aims. Recently, both the presence of multiple stellar chemo-kinematic components and rotation in the Sculptor dwarf spheroidal galaxy have been put into question. Therefore, we re-examine the chemo-kinematic properties of this galaxy making use of th
Externí odkaz:
http://arxiv.org/abs/2411.07283
Publikováno v:
Mathematical Biosciences and Engineering, 21(9), 7067-7083, 2024
We consider a time-inhomogeneous diffusion process able to describe the dynamics of infected people in a susceptible-infectious epidemic model in which the transmission intensity function is time-dependent. Such a model is well suited to describe som
Externí odkaz:
http://arxiv.org/abs/2410.21954
Autor:
Biagini, Alfredo, Petralia, Antonino, Di Maio, Claudia, Betti, Lorenzo, Pace, Emanuele, Micela, Giuseppina
Publikováno v:
A&A 690, A386 (2024)
Context. Stellar activity consists of different phenomena, mainly spots and faculae, and it is one of the main sources of noise in exoplanetary observations because it affects both spectroscopic and photometric observations. If we want to study young
Externí odkaz:
http://arxiv.org/abs/2409.11034
Autor:
Foord, Adi, Civano, Francesca, Comerford, Julia M., Elvis, Martin, Fabbiano, Giuseppina, Liu, Tingting, Lusso, Elisabeta, Marchesi, Stefano, Mezcua, Mar, Muller-Sanchez, Francisco, Nevin, Rebecca, Nyland, Kristina
We present a multi-wavelength analysis of MCG+11-11-032, a nearby AGN with the unique classification of both a binary and a dual AGN candidate. With new Chandra observations we aim to resolve any dual AGN system via imaging data, and search for signs
Externí odkaz:
http://arxiv.org/abs/2409.03839
Autor:
Viswanathan, Akshara, Byström, Amanda, Starkenburg, Else, Foppen, Anne, Straat, Jill, Montelius, Martin, Sestito, Federico, Venn, Kim A., Navarrete, Camila, Matsuno, Tadafumi, Martin, Nicolas F., Thomas, Guillaume F., Ardern-Arentsen, Anke, Battaglia, Giuseppina, Fouesneau, Morgan, Navarro, Julio, Vitali, Sara
Context: In the context of Galactic archaeology, the outer halo remains relatively unexplored with respect to its metallicity distribution, merger debris, and the abundance of known very/extremely metal-poor ([Fe/H]<-2.5) stars. Aim: We utilize the P
Externí odkaz:
http://arxiv.org/abs/2408.17250
We investigate the existence of "generic derivations" in exponential fields. We show that exponential fields without additional compatibility conditions between derivation and exponentiation cannot support a generic derivation.
Externí odkaz:
http://arxiv.org/abs/2407.14840
Autor:
Evans, Ian N., Evans, Janet D., Martínez-Galarza, J. Rafael, Miller, Joseph B., Primini, Francis A., Azadi, Mojegan, Burke, Douglas J., Civano, Francesca M., D'Abrusco, Raffaele, Fabbiano, Giuseppina, Graessle, Dale E., Grier, John D., Houck, John C., Lauer, Jennifer, McCollough, Michael L., Nowak, Michael A., Plummer, David A., Rots, Arnold H., Siemiginowska, Aneta, Tibbetts, Michael S.
The Chandra Source Catalog (CSC) is a virtual X-ray astrophysics facility that enables both detailed individual source studies and statistical studies of large samples of X-ray sources detected in ACIS and HRC-I imaging observations obtained by the C
Externí odkaz:
http://arxiv.org/abs/2407.10799
In this paper, we study the existence and the summability of solutions to a Robin boundary value problem whose prototype is the following: $$ \begin{cases} -\text{div}(b(|u|)\nabla u)=f &\text{in }\Omega,\\[.2cm] \displaystyle\frac{\partial u}{\parti
Externí odkaz:
http://arxiv.org/abs/2407.10607