For charged scalar perturbations of an Ernst-Schwarzschild black hole, the quasinormal-mode frequency scales as |q - q_c|^{1/2} near a critical charge q_c, with a mode-independent exponent.
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LOFAR2.0, FAST Core Array and BINGO are forecast to bound f_PBH < 0.16 (M>1 Msun), <0.39 (M>10 Msun) and <0.39 (M>0.1 Msun) respectively from null FRB lensing.
KNN classification and hybrid decision-tree photo-z methods applied to DES DR2 cross-matched with SDSS yield a quasar catalog spanning z~0.5 to >3.
citing papers explorer
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Universality in quasinormal modes of a magnetized black hole
For charged scalar perturbations of an Ernst-Schwarzschild black hole, the quasinormal-mode frequency scales as |q - q_c|^{1/2} near a critical charge q_c, with a mode-independent exponent.
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Probing Primordial Black Holes with upcoming Radio Telescopes: a case study for LOFAR2.0, FAST Core Array and BINGO
LOFAR2.0, FAST Core Array and BINGO are forecast to bound f_PBH < 0.16 (M>1 Msun), <0.39 (M>10 Msun) and <0.39 (M>0.1 Msun) respectively from null FRB lensing.
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Photometric classification of quasars from DES and photo-$z$ estimation with Machine Learning
KNN classification and hybrid decision-tree photo-z methods applied to DES DR2 cross-matched with SDSS yield a quasar catalog spanning z~0.5 to >3.