GA-NIFS: JWST/NIRSpec IFS view of the z~3.5 galaxy GS5001 and its close environment at the core of a large-scale overdensity

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Isabella Lamperti, Santiago Arribas, Michele Perna, Bruno Rodríguez Del Pino, Chiara Circosta | Summary: We present JWST NIRSpec observations in IFS mode of the galaxy GS5001 at redshift z=3.47, the brightest member of a candidate protocluster in the GOODS-S field. The data cover a field of view […]


Continue.. GA-NIFS: JWST/NIRSpec IFS view of the z~3.5 galaxy GS5001 and its close environment at the core of a large-scale overdensity

Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Eric Zhang, Laura V Sales, Federico Marinacci, Paul Torrey, Mark Vogelsberger | Summary: Simulations of galaxy formation are mostly unable to resolve the energy-conserving phase of individual supernova events, having to resort to subgrid models to distribute the energy and momentum resulting from stellar feedback. However, the […]


Continue.. Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models

Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Eric Zhang, Laura V. Sales, Federico Marinacci, Paul Torrey, Mark Vogelsberger | Summary: Simulations of galaxy formation are mostly unable to resolve the energy-conserving phase of individual supernova events, having to resort to subgrid models to distribute the energy and momentum resulting from stellar feedback. However, the […]


Continue.. Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models

HD 21520 b: a warm sub-Neptune transiting a bright G dwarf

Kavli Affiliate: Avi Shporer | First 5 Authors: Molly Nies, Ismael Mireles, François Bouchy, Diana Dragomir, Belinda A. Nicholson | Summary: We report the discovery and validation of HD 21520 b, a transiting planet found with TESS and orbiting a bright G dwarf (V=9.2, $T_{eff} = 5871 pm 62$ K, $R_{star} = 1.04pm 0.02, R_{odot}$). […]


Continue.. HD 21520 b: a warm sub-Neptune transiting a bright G dwarf

Probing the polarized emission from SMC X-1: the brightest X-ray pulsar observed by IXPE

Kavli Affiliate: Nicola Omodei | First 5 Authors: Sofia V. Forsblom, Sergey S. Tsygankov, Juri Poutanen, Victor Doroshenko, Alexander A. Mushtukov | Summary: Recent observations of X-ray pulsars (XRPs) performed by the Imaging X-ray Polarimetry Explorer (IXPE) have made it possible to investigate the intricate details of these objects in a new way, thanks to […]


Continue.. Probing the polarized emission from SMC X-1: the brightest X-ray pulsar observed by IXPE

Constraints on Ultra Heavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations

Kavli Affiliate: Li Xin Li | First 5 Authors: Zhen Cao, F. Aharonian, Q. An, Axikegu, Y. X. Bai | Summary: In this work we try to search for signals generated by ultra-heavy dark matter at the Large High Altitude Air Shower Observatory (LHAASO) data. We look for possible gamma-ray by dark matter annihilation or […]


Continue.. Constraints on Ultra Heavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations

Constraints on Ultra Heavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations

Kavli Affiliate: Zhuo Li | First 5 Authors: Zhen Cao, F. Aharonian, Q. An, Axikegu, Y. X. Bai | Summary: In this work we try to search for signals generated by ultra-heavy dark matter at the Large High Altitude Air Shower Observatory (LHAASO) data. We look for possible gamma-ray by dark matter annihilation or decay […]


Continue.. Constraints on Ultra Heavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations

The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544

Kavli Affiliate: Claudio Ricci | First 5 Authors: Robert Wheatley, Catherine J. Grier, Patrick B. Hall, W. N. Brandt, Jonah Lotz | Summary: We present the results of an investigation of a highly variable CIV broad absorption-line feature in the quasar SBS 1408+544 (z=2.337) that shows a significant shift in velocity over time. This source […]


Continue.. The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544

Warm Hawking Relics From Primordial Black Hole Domination

Kavli Affiliate: Gordan Z. Krnjaic | First 5 Authors: Christopher J. Shallue, Julian B. Muñoz, Gordan Z. Krnjaic, , | Summary: We study the cosmological impact of warm, dark-sector relic particles produced as Hawking radiation in a primordial-black-hole-dominated universe before big bang nucleosynthesis. If those dark-sector particles are stable, they would survive to the present […]


Continue.. Warm Hawking Relics From Primordial Black Hole Domination

Warm Hawking Relics From Primordial Black Hole Domination

Kavli Affiliate: Gordan Z. Krnjaic | First 5 Authors: Christopher J. Shallue, Julian B. Muñoz, Gordan Z. Krnjaic, , | Summary: We study the cosmological impact of warm, dark-sector relic particles produced as Hawking radiation in a primordial-black-hole-dominated universe before big bang nucleosynthesis. If these dark-sector particles are stable, they would survive to the present […]


Continue.. Warm Hawking Relics From Primordial Black Hole Domination