Gravitational collapse for the K-essence emergent Vaidya spacetime

Abstract

In this paper, we study the gravitational collapse in the k-essence emergent gravity using a generalized Vaidya-type metric as a background. We also analyze the cosmic censorship hypothesis for this system. We show that the emergent gravity metric resembles closely to the new type of the generalized Vaidya metrics for null fluid collapse with the k-essence emergent mass function, where we consider the k-essence scalar field being a function solely of the advanced or the retarded time. This new type of k-essence emergent Vaidya metric has satisfied the required energy conditions. The existence of the locally naked central singularity, the strength and the strongness of the singularities for the kessence emergent Vaidya metric are the interesting outcomes of the present work.

Collapsing scenario for the k-essence emergent generalized Vaidya spacetime in the context of massive gravity's rainbow

“…Manna et al established the general connection between the k-essence geometry and the Vaidya spacetime in [69][70][71]. More specifically, using a generalized Vaidya-type metric [62,63], they have worked on the gravitational collapse in the k-essence emergent gravity in [71] in the context of cosmic censorship hypothesis. Alongside, the existence of the locally naked central singularity, the strength, and the strongness of the singularities for the k-essence emergent Vaidya metric was established by them.…”

“…Based on the following articles [14,15,71], our work in this paper includes the exploration of the collapsing scenario for the k-essence emergent Vaidya spacetime in the context of massive gravity's rainbow. To do this, we started our work by considering the background metric as Vaidya spacetime in massive gravity's rainbow [14].…”

Synthesis, spectral characterization, density functional theory studies, and biological screening of some transition metal complexes of a novel hydrazide–hydrazone ligand of isonicotinic acid

“…[15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Moreover, isonicotinic acid and its derivatives showed important properties like antibacterial, antioxidant, and anticancer agents. [14,[31][32][33] Isonicotinic acid hydrazide (isoniazid; INH) is widely applied as a first line drug for the treatment of tuberculosis and still the most effective antituberculosis drug, recommended by WHO. [14,[31][32][33] Designing derivatives from this molecule has been a challenge taken up by several research groups [31][32][33] as the pharmacokinetic properties and cellular permeability of the drug can be enhanced by derivatization to bioreversible forms of this drug as hydrazones.…”

“…[14,[31][32][33] Isonicotinic acid hydrazide (isoniazid; INH) is widely applied as a first line drug for the treatment of tuberculosis and still the most effective antituberculosis drug, recommended by WHO. [14,[31][32][33] Designing derivatives from this molecule has been a challenge taken up by several research groups [31][32][33] as the pharmacokinetic properties and cellular permeability of the drug can be enhanced by derivatization to bioreversible forms of this drug as hydrazones. [34] On the other hand, organic antibiotics generally have a single molecular target.…”

Recent Advances in the Microwave Assisted Synthesis of Benzofuran and Indole Derivatives

“…Benzofuran is a heterocyclic compound consisting of fused benzene and furan rings. This heterocycle is well known for its anti-inflammatory, 11 anti-hypertensive, 12 anti-tubercular 13 and anti-hyperglycaemia 14 activities. Benzofurans are important moiety present in polymers and natural products.…”