56 citations · 227 across the 24 of their papers we have counts for
8 papers · 1 filter
New Rotating Black Hole in Electromagnetic Fields: Cosmological Horizon without Cosmological Constant
Liang Ma, H. Lu
We obtain a new electrovacuum and related background spacetime that contains a cosmological horizon supported entirely by the electromagnetic field. The local solution belongs to t…
Global Distinctions Between New Electrovacuum and Kundt Class
Liang Ma, H. Lu
It was observed [2606.30426] that our recently constructed electrovacuum [2606.23782], supported by electromagnetic fields, can be locally transformed to a special Petrov type D so…
Demagnetizing KBR and New Ricci-flat Rotating Metric
Liang Ma, H. Lu
We construct a new Ricci-flat metric by demagnetizing the recently reported Kerr-Bertotti-Robinson (KBR) solution. The metric is a deformation of the Kerr metric characterized by a…
Weak Cosmic Censorship Conjecture in Gedanken Experiments at All Orders
Kai-Peng Lu, Peng-Yu Wu, H. Lu
We present a systematic analysis of the Weak Cosmic Censorship Conjecture (WCCC) through Gedankenexperiments involving black hole perturbations induced by test particles. Our appro…
Charging the Love numbers: Charged scalar response coefficients of Kerr-Newman black holes
Liang Ma, Ze-Hua Wu, Yi Pang +1
We study the electrically-charged massless scalar response to the general Kerr-Newman black hole and obtain the exact (complex) response coefficients, whose real parts are the Love…
Vacua and Exact Solutions in Lower- Limits of EGB
Liang Ma, H. Lu
We consider the action principles that are the lower dimensional limits of the Einstein-Gauss-Bonnet gravity {\it via} the Kaluza-Klein route. We study the vacua and obtain some ex…
Universal bounds on the size of a black hole
Run-Qiu Yang, H. Lu
For static black holes in Einstein gravity, if matter fields satisfy a few general conditions, we conjecture that three characteristic parameters about the spatial size of black ho…
Bounds on Photon Spheres and Shadows of Charged Black Holes in Einstein-Gauss-Bonnet-Maxwell Gravity
Liang Ma, H. Lu
We consider spherically symmetric and static charged black holes in Einstein-Gauss-Bonnet-Maxwell gravities in general dimensions and study their photon spheres and black…