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51 papers · 1 filter
Observations of AGN-driven feedback: dynamics and ionization of the filaments in M87
Camille Poitras, Marie-Lou Gendron-Marsolais, Valeria Olivares +9
We present a comprehensive kinematic and ionization analysis of the warm ionized filaments ( K) in M87, the central galaxy of the Virgo cluster, using new integral field spec…
Quantum geometry, localization, and topological bounds of spin fluctuations
Carlos Saji, Roberto E. Troncoso
We study how topological crystalline defects--dislocations--reshape the real-space quantum geometric tensor and act as tunable sources of quantum geometry. We show that dislocation…
PSR J0537-6910: Exponential recoveries detected for 12 glitches
E. Zubieta, C. M. Espinoza, D. Antonopoulou +4
Pulsar glitches are unresolved increments of the rotation rate that sometimes trigger an enhancement of the spin-down rate. On occasions, the augmented spin-down decays gradually i…
Interferometric view into RT Pav's long secondary period. binary vs oscillatory convective modes
B. Courtney-Barrer, X. Haubois, P. Wood +6
Long secondary periods (LSPs) occur in about one-third of evolved stars, yet their origin remains unclear. The leading explanations are oscillatory convective modes and a binary co…
A review on fundamental bounds and estimators for photometry and astrometry of celestial point sources using array detectors, from first principles
Sebastián Espinosa, Rene A. Mendez, Jorge F. Silva +1
Precise astrometric and photometric measurements of celestial point sources are fundamental to modern astronomy. These measurements, used to determine object positions, motions, an…
New and updated timing models for seven young energetic X-ray pulsars, including the Big Glitcher PSR J0537-6910
Wynn C. G. Ho, Lucien Kuiper, Cristobal M. Espinoza +6
We present new timing models and update our previous ones for the rotational evolution of seven young energetic pulsars, including four of the top five in spin-down luminosity Edot…