Zobrazeno 1 - 10
of 19 699
pro vyhledávání: '"Ashish KUMAR"'
Autor:
Meena, Ashish Kumar
This paper studies gravitational lensing degeneracies in the wave-optics regime, focusing on lensed gravitational waves (GWs). Considering lensing degeneracies as re-scaling (or transformations) of arrival time delay surface, we can divide them into
Externí odkaz:
http://arxiv.org/abs/2409.00145
Hyperbolic umbilic (HU) is a point singularity of the gravitational lens equation, giving rise to a ring-shaped image formation made of four highly magnified images, off-centred from the lens centre. Recent observations have revealed new strongly len
Externí odkaz:
http://arxiv.org/abs/2405.16826
Autor:
Shukla, Awadhesh Kumar, Pathak, Sachin, Pandey, Om Prakash, Mishra, Vipul, Upadhyay, Ashish Kumar
Let $\mathbb F_q$ be a finite field, where $q$ is an odd prime power. Let $R=\mathbb{F}_q+u\mathbb{F}_q+v\mathbb{F}_q+uv\mathbb F_q$ with $u^2=u,v^2=v,uv=vu$. In this paper, we study the algebraic structure of $(\theta, \Theta)$-cyclic codes of block
Externí odkaz:
http://arxiv.org/abs/2404.00613
Autor:
Zackrisson, Erik, Hultquist, Adam, Kordt, Aron, Diego, José M., Nabizadeh, Armin, Vikaeus, Anton, Meena, Ashish Kumar, Zitrin, Adi, Volpato, Guglielmo, Lundqvist, Emma, Welch, Brian, Costa, Guglielmo, Windhorst, Rogier A.
Gravitational lensing may render individual high-mass stars detectable out to cosmological distances, and several extremely magnified stars have in recent years been detected out to redshifts $z\approx 6$. Here, we present Muspelheim, a model for the
Externí odkaz:
http://arxiv.org/abs/2312.09289