BASS-XL: X-ray variability properties of unobscured Active Galactic Nuclei

Kavli Affiliate: Claudio Ricci | First 5 Authors: Alessia Tortosa, Claudio Ricci, Patricia Arévalo, Michael J. Koss, Franz E. Bauer | Summary: We investigate the X-ray variability properties of Seyfert1 Galaxies belonging to the BAT AGN Spectroscopic Survey (BASS). The sample includes 151 unobscured (N$_{rm H}<10^{22}$ cm$^{-2}$) AGNs observed with XMM-Newton for a total exposure […]


Continue.. BASS-XL: X-ray variability properties of unobscured Active Galactic Nuclei

BASS-XL: X-ray variability properties of unobscured Active Galactic Nuclei

Kavli Affiliate: Claudio Ricci | First 5 Authors: Alessia Tortosa, Claudio Ricci, Patricia Arévalo, Michael J. Koss, Franz E. Bauer | Summary: We investigate the X-ray variability properties of Seyfert1 Galaxies belonging to the BAT AGN Spectroscopic Survey (BASS). The sample includes 151 unobscured (N$_{rm H}<10^{22}$ cm$^{-2}$) AGNs observed with XMM-Newton for a total exposure […]


Continue.. BASS-XL: X-ray variability properties of unobscured Active Galactic Nuclei

X-ray eruptions every 22 days from the nucleus of a nearby galaxy

Kavli Affiliate: Ronald Remillard | First 5 Authors: Muryel Guolo, Dheeraj R. Pasham, Michal Zajaček, Eric R. Coughlin, Suvi Gezari | Summary: Galactic nuclei showing recurrent phases of activity and quiescence have recently been discovered, with recurrence times as short as a few hours to a day — known as quasi-periodic X-ray eruption (QPE) sources […]


Continue.. X-ray eruptions every 22 days from the nucleus of a nearby galaxy

X-ray eruptions every 22 days from the nucleus of a nearby galaxy

Kavli Affiliate: Ronald Remillard | First 5 Authors: Muryel Guolo, Dheeraj R. Pasham, Michal Zajaček, Eric R. Coughlin, Suvi Gezari | Summary: Galactic nuclei showing recurrent phases of activity and quiescence have recently been discovered, with recurrence times as short as a few hours to a day — known as quasi-periodic X-ray eruption (QPE) sources […]


Continue.. X-ray eruptions every 22 days from the nucleus of a nearby galaxy

X-ray eruptions every 22 days from the nucleus of a nearby galaxy

Kavli Affiliate: Ronald Remillard | First 5 Authors: Muryel Guolo, Dheeraj R. Pasham, Michal Zajaček, Eric R. Coughlin, Suvi Gezari | Summary: Galactic nuclei showing recurrent phases of activity and quiescence have recently been discovered, with recurrence times as short as a few hours to a day — known as quasi-periodic X-ray eruption (QPE) sources […]


Continue.. X-ray eruptions every 22 days from the nucleus of a nearby galaxy

Moment of Inertia for Axisymmetric Neutron Stars in the Standard-Model Extension

Kavli Affiliate: Lijing Shao | First 5 Authors: Yiming Dong, Zexin Hu, Rui Xu, Lijing Shao, | Summary: We develop a consistent approach to calculate the moment of inertia (MOI) for axisymmetric neutron stars (NSs) in the Lorentz-violating Standard-Model Extension (SME) framework. To our knowledge, this is the first relativistic MOI calculation for axisymmetric NSs […]


Continue.. Moment of Inertia for Axisymmetric Neutron Stars in the Standard-Model Extension

Low disorder and high valley splitting in silicon

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Davide Degli Esposti, Lucas E. A. Stehouwer, Önder Gül, Nodar Samkharadze, Corentin Déprez | Summary: The electrical characterisation of classical and quantum devices is a critical step in the development cycle of heterogeneous material stacks for semiconductor spin qubits. In the case of silicon, properties such as […]


Continue.. Low disorder and high valley splitting in silicon

Low disorder and high valley splitting in silicon

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Davide Degli Esposti, Lucas E. A. Stehouwer, Önder Gül, Nodar Samkharadze, Corentin Déprez | Summary: The electrical characterisation of classical and quantum devices is a critical step in the development cycle of heterogeneous material stacks for semiconductor spin qubits. In the case of silicon, properties such as […]


Continue.. Low disorder and high valley splitting in silicon

Low disorder and high valley splitting in silicon

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Davide Degli Esposti, Lucas E. A. Stehouwer, Önder Gül, Nodar Samkharadze, Corentin Déprez | Summary: The electrical characterisation of classical and quantum devices is a critical step in the development cycle of heterogeneous material stacks for semiconductor spin qubits. In the case of silicon, properties such as […]


Continue.. Low disorder and high valley splitting in silicon

Probing the Galactic halo with RR Lyrae stars — IV. On the Oosterhoff dichotomy of RR Lyrae stars

Kavli Affiliate: Huawei Zhang | First 5 Authors: Shan Zhang, Gaochao Liu, Yang Huang, Zongfei Lv, Sarah Ann Bird | Summary: We use 3653 (2661 RRab, 992 RRc) RR Lyrae stars (RRLs) with 7D (3D position, 3D velocity, and metallicity) information selected from SDSS, LAMOST, and Gaia EDR3, and divide the sample into two Oosterhoff […]


Continue.. Probing the Galactic halo with RR Lyrae stars — IV. On the Oosterhoff dichotomy of RR Lyrae stars