Accumulated Tidal Heating of Stars Over Multiple Pericenter Passages Near SgrA*

Abstract

We consider the long-term tidal heating of a star by the supermassive black hole at the Galactic center, SgrA*. We show that gravitational interaction with background stars leads to a linear growth of the tidal excitation energy with the number of pericenter passages near SgrA*. The accumulated heat deposited by excitation of modes within the star over many pericenter passages can lead to a runaway disruption of the star at a pericenter distance that is 4-5 times farther than the standard tidal disruption radius. The accumulated heating may explain the lack of massive ($\gtrsim 10M_{\odot }$) S-stars closer than several tens of AU from SgrA*.

8 pages, 8 figures and 1 table, accepted by MNRAS

References in corpus (10)

• Modules for Experiments in Stellar Astrophysics (MESA)
• ADIPLS -- the Aarhus adiabatic oscillation package
• Testing the general relativistic ''no-hair'' theorems using the galactic center black hole SgrA*
• Stellar remnants in galactic nuclei: mass segregation
• Interaction of massive black hole binaries with their stellar environment: I. Ejection of hypervelocity stars
• On the nature of the fast moving star S2 in the Galactic Center
• Tidal effects on small bodies by massive black holes
• Resonant Tidal Excitations of Inertial Modes in Coalescing Neutron Star Binaries
• Tracing intermediate-mass black holes in the Galactic Centre
• Nonlinear Saturation of g-modes in Proto-Neutron Stars: Quieting the Acoustic Engine

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• Tidal capture of a primordial black hole by a neutron star: implications for constraints on dark matter
• Turbovelocity Stars: Kicks Resulting From the Tidal Disruption of Solitary Stars
• In-situ extreme mass ratio inspirals via sub-parsec formation and migration of stars in thin, gravitationally unstable AGN discs
• The Dynamics of the Multi-planet System Orbiting Kepler-56
• Dynamical Tides in Highly Eccentric Binaries: Chaos, Dissipation and Quasi-Steady State
• The secular tidal disruption of stars by low-mass Super Massive Black Holes secondaries in galactic nuclei
• Rates of capture of stars by supermassive black holes in non-spherical galactic nuclei
• Shock Breakouts from Tidal Disruption Events
• Sgr A* and its Environment: Low Mass Star Formation, the Origin of X-ray Gas and Collimated Outflow
• Repeating Partial Tidal Encounters of Sun-like Stars Leading to their Complete Disruption
• Deviation of Stellar Orbits from Test Particle Trajectories Around Sgr A* Due to Tides and Winds
• Modified evolution of stellar binaries from supermassive black hole binaries
• The S stars' zone of avoidance in the Galactic center
• The former companion of the hyper-velocity star S5-HVS1
• Irregular Repeating Tidal Disruption Events due to Diffusive Tides