G2 can Illuminate the Black Hole Population near the Galactic Center
arXiv:1302.3220 · doi:10.1103/PhysRevLett.110.221102
Abstract
Galactic nuclei are expected to be densely populated with stellar and intermediate mass black holes. Exploring this population will have important consequences for the observation prospects of gravitational waves as well as understanding galactic evolution. The gas cloud G2 currently approaching Sgr A* provides an unprecedented opportunity to probe the black hole and neutron star population of the Galactic nucleus. We examine the possibility of a G2-black hole encounter and its detectability with current X-ray satellites, such as Chandra and NuSTAR. We find that multiple encounters are likely to occur close to the pericenter, which may be detectable upon favorable circumstances. This opportunity provides an additional, important science case for leading X-ray observatories to closely follow G2 on its way to the nucleus.
Accepted to PRL. 4 pages, 2 pictures
References in corpus (12)
- Gravitational waves from scattering of stellar-mass black holes in galactic nuclei
- GRMHD Simulations of Magnetized Advection Dominated Accretion on a Non-Spinning Black Hole: Role of Outflows
- Advection-Dominated Accretion and the Black Hole Event Horizon
- Intermediate mass black holes in AGN disks: I. Production & Growth
- Starbursts near supermassive black holes: young stars in the Galactic Center, and gravitational waves in LISA band
- Stellar remnants in galactic nuclei: mass segregation
- Rotating Accretion Flows: From Infinity to the Black Hole
- Detection Rate Estimates of Gravity-waves Emitted During Parabolic Encounters of Stellar Black Holes in Globular Clusters
- Observing complete gravitational wave signals from dynamical capture binaries
- New observations of the gas cloud G2 in the Galactic Center
- Radio light curves during the passage of cloud G2 near Sgr A*
- X-rays from cusps of compact remnants near galactic centres
Cited by in corpus (16)
- Rapid and Bright Stellar-mass Binary Black Hole Mergers in Active Galactic Nuclei
- Keck Observations of the Galactic Center Source G2: Gas Cloud or Star?
- Black Hole Formation in the Lower Mass Gap through Mergers and Accretion in AGN Disks
- Black Hole Disks in Galactic Nuclei
- Physical laboratory at the center of the Galaxy
- Observations of Sagittarius A* during the pericenter passage of the G2 object with MAGIC
- Expectations for extreme-mass-ratio bursts from the Galactic Centre
- Isotropic-Nematic Phase Transitions in Gravitational Systems II: Higher Order Multipoles
- Testing the Black Hole No-hair Theorem with Galactic Center Stellar Orbits
- Black Hole Discs and Spheres in Galactic Nuclei -- Exploring the Landscape of Vector Resonant Relaxation Equilibria
- Sculpting the Stellar Cusp in the Galactic Center
- Menus for Feeding Black Holes
- Colliding with G2 near the Galactic Centre: a geometrical approach
- Spin dynamics of moving bodies in rotating black hole spacetimes
- The gas streamer G1-2-3 in the Galactic Center
- Constraints on the VHE counterpart of two binary black hole mergers observed by the MAGIC and CTAO LST-1 telescopes