Constraining the clustering and 21-cm signature of radio galaxies at cosmic dawn

Kavli Affiliate: George Efstathiou | First 5 Authors: Sudipta Sikder, Rennan Barkana, Anastasia Fialkov, , | Summary: The efficiency of radio emission is an important unknown parameter of early galaxies at cosmic dawn, as models with high efficiency have been shown to modify the cosmological 21-cm signal substantially, deepening the absorption trough and boosting the […]


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JWST-TST High Contrast: Asymmetries, dust populations and hints of a collision in the $β$ Pictoris disk with NIRCam and MIRI

Kavli Affiliate: Sara Seager | First 5 Authors: Isabel Rebollido, Christopher C. Stark, Jens Kammerer, Marshall D. Perrin, Kellen Lawson | Summary: We present the first JWST MIRI and NIRCam observations of the prominent debris disk around Beta Pictoris. Coronagraphic observations in 8 filters spanning from 1.8 to 23~$mu$m provide an unprecedentedly clear view of […]


Continue.. JWST-TST High Contrast: Asymmetries, dust populations and hints of a collision in the $β$ Pictoris disk with NIRCam and MIRI

The Kinematic and Chemical Properties of the Close-in Planet Host Star 8 UMi

Kavli Affiliate: Huawei Zhang | First 5 Authors: Huiling Chen, Yang Huang, Wei Zhu, Timothy C. Beers, Renjing Xie | Summary: A recent study by Hon et al. reported that a close-in planet around the red clump star, 8 UMi, should have been engulfed during the expansion phase of the stellar evolution. They explained the […]


Continue.. The Kinematic and Chemical Properties of the Close-in Planet Host Star 8 UMi

The Kinematic and Chemical Properties of the Close-in Planet Host Star 8 UMi

Kavli Affiliate: Huawei Zhang | First 5 Authors: Huiling Chen, Yang Huang, Wei Zhu, Timothy C. Beers, Renjing Xie | Summary: A recent study by Hon et al. reported that a close-in planet around the red clump star, 8 UMi, should have been engulfed during the expansion phase of its parent star’s evolution. They explained […]


Continue.. The Kinematic and Chemical Properties of the Close-in Planet Host Star 8 UMi

On the Physical Nature of Ly$α$ Transmission Spikes in High Redshift Quasar Spectra

Kavli Affiliate: Nickolay Gnedin | First 5 Authors: Hanjue Zhu, Nickolay Gnedin, Camille Avestruz, , | Summary: We investigate Lyman-alpha (Ly$alpha$) transmission spikes at $5.2 < z < 6.8$ using synthetic quasar spectra from the “Cosmic Reionization On Computers" simulations. We focus on understanding the relationship between these spikes and the properties of the intergalactic […]


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Diverse molecular gas excitations in quasar host galaxies at z sim 6

Kavli Affiliate: Ran Wang | First 5 Authors: Jianan Li, Ran Wang, Antonio Pensabene, Fabian Walter, Bram P. Venemans | Summary: We present observations using the NOrthern Extended Millimetre Array (NOEMA) of CO and $rm H_{2}O$ emission lines, and the underlying dust continuum in two quasars at $z sim 6$, i.e., P215-16 at $z$ = […]


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Detection of X-ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-ray Polarimetry Explorer

Kavli Affiliate: Grzegorz Madejski | First 5 Authors: Manel Errando, Ioannis Liodakis, Alan P. Marscher, Herman L. Marshall, Riccardo Middei | Summary: Observations of linear polarization in the 2-8 keV energy range with the Imaging X-ray Polarimetry Explorer (IXPE) explore the magnetic field geometry and dynamics of the regions generating non-thermal radiation in relativistic jets […]


Continue.. Detection of X-ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-ray Polarimetry Explorer

Detection of X-ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-ray Polarimetry Explorer

Kavli Affiliate: Grzegorz Madejski | First 5 Authors: Manel Errando, Ioannis Liodakis, Alan P. Marscher, Herman L. Marshall, Riccardo Middei | Summary: Observations of linear polarization in the 2-8 keV energy range with the Imaging X-ray Polarimetry Explorer (IXPE) explore the magnetic field geometry and dynamics of the regions generating non-thermal radiation in relativistic jets […]


Continue.. Detection of X-ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-ray Polarimetry Explorer

Long-lived topological time-crystalline order on a quantum processor

Kavli Affiliate: Ke Wang | First 5 Authors: Liang Xiang, Wenjie Jiang, Zehang Bao, Zixuan Song, Shibo Xu | Summary: Topologically ordered phases of matter elude Landau’s symmetry-breaking theory, featuring a variety of intriguing properties such as long-range entanglement and intrinsic robustness against local perturbations. Their extension to periodically driven systems gives rise to exotic […]


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Hydrogen Epoch of Reionization Array (HERA) Phase II Deployment and Commissioning

Kavli Affiliate: Jacqueline N. Hewitt | First 5 Authors: Lindsay M. Berkhout, Daniel C. Jacobs, Zuhra Abdurashidova, Tyrone Adams, James E. Aguirre | Summary: This paper presents the design and deployment of the Hydrogen Epoch of Reionization Array (HERA) phase II system. HERA is designed as a staged experiment targeting 21 cm emission measurements of […]


Continue.. Hydrogen Epoch of Reionization Array (HERA) Phase II Deployment and Commissioning