TY - JOUR T1 - Narrowband Searches for Continuous Gravitational Waves from known Pulsars in the First Two Parts of the Fourth LIGO–Virgo–KAGRA Observing Run JO - The Astrophysical Journal UR - https://doi.org/10.3847/1538-4357/ae77fc PY - 2026/07/07 AU - Abac AG AU - Abouelfettouh I AU - Acernese F AU - Ackley K AU - Adam A AU - Adamcewicz C AU - Adhicary S AU - Adhikari D AU - Adhikari N AU - Adhikari RX AU - Adkins VK et al ED - DO - DOI: 10.3847/1538-4357/ae77fc PB - American Astronomical Society VL - 1005 IS - 2 SP - 221 EP - 221 Y2 - 2026/07/27 ER -