Results 51 to 60 of about 243,233 (254)

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

High-energy astrophysics - II. Compact binary stars [PDF]

, 2004
Not ...
Haswell, C.
core  

Quantifying the Impact of Relativistic Precession on Tidal Disruption Event Light Curves

Astronomische Nachrichten, EarlyView.
ABSTRACT The tidal field of a black hole can turn a star into a gas stream whose orbit can precess, especially if the a black hole is rapidly spinning. In this work, we investigate the impact of precession on the light curves of tidal disruption events (TDE).
Diego Calderón, Ondřej Pejcha, Brian D. Metzger, Paul C. Duffell, Stephan Rosswog   +4 more
wiley   +1 more source

Minimal length scale correction in the noise of gravitons

European Physical Journal C: Particles and Fields, 2023
In this paper we have considered a quantized and linearly polarized gravitational wave interacting with a gravitational wave detector (interferometer detector) in the generalized uncertainty principle (GUP) framework. Following the analysis in Phys. Rev.
Soham Sen, Sunandan Gangopadhyay
doaj   +1 more source

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, EarlyView.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source

Filter transmittance calibration of the follow-up x-ray telescope on board the EP satellite

AIP Advances
The Einstein Probe satellite is equipped with two payloads, one of which is the Follow-up X-ray Telescope (FXT). The FXT comprises two completely independent optical and detector systems: FXT-A and FXT-B.
Jingjing Xu, Juan Zhang, Tianxiang Chen, Na Gao, Xiaofan Zhao, Zijian Zhao, Weiwei Cui, Juan Wang, Yusa Wang, Yuxuan Zhu, Yanji Yang, Laidan Luo, Dawei Han, Jia Ma, Hao Wang, Xiongtao Yang, Jia Huo, Wei Li, Ziliang Zhang, Haoyang Geng, Yong Chen   +20 more
doaj   +1 more source

The X-ray properties and structure of A3571 up to R500

Astronomy & Astrophysics
Abell 3571 is a nearby, X-ray-bright galaxy cluster located in the Shapley Supercluster. Although it appears morphologically relaxed in X-ray images, multiwavelength observations reveal subtle indications of residual dynamical activity likely associated ...
Zheng X., Yu H., Jia S., Li C., Hou X., Liu A., Chen Y., Feng H., Song L., Liu C., Lu F., Zhang S., Yuan W., Sanders J., Wang J., Nandra K., Cui W., Guan J., Han D., Jin C., Liu Y., Xu J., Zhang J., Zhao H., Zhao X.   +24 more
doaj   +1 more source

Tests of Lorentz Invariance Using High Energy Astrophysics Observations

, 2013
High-energy astrophysics observations provide the best possibilities to detect a very small violation of Lorentz invariance, such as may be related to the structure of space-time near the Planck scale.
Stecker, Floyd W.
core   +1 more source

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

Information theoretic measures for Lifshitz system

Journal of High Energy Physics
In this work, we have studied various mixed state information theoretic quantities for an excited state of Lifshitz spacetime in 3 + 1-dimensions. This geometry is the gravity dual to a class of 2 + 1-dimensional quantum field theories having Lifshitz ...
Souvik Paul, Anirban Roy Chowdhury, Ashis Saha, Sunandan Gangopadhyay   +3 more
doaj   +1 more source