Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Asenjo, Felipe A."'
Autor:
Asenjo, Felipe A., Mahajan, Swadesh M.
We show that dispersive gravitational waves, as a background spacetime, can reflect electromagnetic waves in a plasma. This reflection upshifts the frequency of the reflected wave, being larger for low-frequency incident waves. This effect takes plac
Externí odkaz:
http://arxiv.org/abs/2406.18831
Autor:
Asenjo, Felipe A.
Relativistic electromagnetic plasma waves are described by a dynamical equation that can be solved not only in terms of plane waves, but for several different accelerating wavepacket solutions. Depending on the spatial and temporal dependence of the
Externí odkaz:
http://arxiv.org/abs/2405.12351
From a classical analysis, it is shown that the nondiffractive accelerating gravitational Airy wave packets are solutions of Einstein equations for their linearized tensor modes in a Friedmann-Lema\^itre-Robertson-Walker cosmological background fille
Externí odkaz:
http://arxiv.org/abs/2403.05421
Autor:
Echeverría-Veas, Sebastián, Moya, Pablo S., Lazar, Marian, Poedts, Stefaan, Asenjo, Felipe A.
Different in situ satellite observations within 0.3 to 1 AU from the Sun reveal deviations in the thermodynamics of solar wind expansion. Specifically, these deviations challenge the applicability of the double adiabatic or CGL theory, indicating pot
Externí odkaz:
http://arxiv.org/abs/2403.04011
Autor:
Djalo, Alpha O., Asenjo, Felipe A.
It is discussed how Penrose process can be used in a strange star, described by the Hartle-Thorne metric, to extract its rotational energy. This metric has an ergosphere region that depends only on its angular momentum. It is shown that massive parti
Externí odkaz:
http://arxiv.org/abs/2403.00618
Autor:
Asenjo, Felipe A., Koch, Benjamin
We propose a generalized form of the Thomas-Bargmann-Michel-Telegdi equations. These are first-order in both electric and magnetic fields and retain the conventional conserved quantities and constraints. Within this novel phenomenological framework,
Externí odkaz:
http://arxiv.org/abs/2309.16216
Publikováno v:
A&A 686, A26 (2024)
The ponderomotive force is involved in a variety of space plasmas phenomena which are characterized by the family of Kappa distributions. Therefore, evaluating these nonthermal effects in the ponderomotive force is required. The Washimi and Karpman p
Externí odkaz:
http://arxiv.org/abs/2309.11460
Autor:
Asenjo, Felipe A.
It is known that a nonlinear Schr\"odinger equation describes the self-modulation of a large amplitude circularly polarized wave in relativistic electron-positron plasmas in the weakly and strongly magnetized limits. Here, we show that such equation
Externí odkaz:
http://arxiv.org/abs/2308.14760
Autor:
Asenjo, Felipe A.
We explore electromagnetic wave modes that can exist in a cosmological plasma dominated by dark energy due to a cosmological constant. It is found that, in the cold and hot plasma cases, electromagnetic plasma wave modes can be found exactly. The eff
Externí odkaz:
http://arxiv.org/abs/2308.09875
Autor:
Hojman, Sergio A., Asenjo, Felipe A.
It is shown that any mathematical solution for null electromagnetic field knots in flat spacetime is also a null field knotted solution for cosmological electromagnetic fields. This is obtained by replacing the time $t\rightarrow \tau=\int dt/a$, whe
Externí odkaz:
http://arxiv.org/abs/2308.07142