Spectroastrometry and Reverberation Mapping (SARM) of Active Galactic Nuclei. I. The H$β$ Broad-line Region Structure and Black Hole Mass of Five Quasars

Posted by dbos Peking

Kavli Affiliate: Luis C. Ho | First 5 Authors: Yan-Rong Li, Chen Hu, Zhu-Heng Yao, Yong-Jie Chen, Hua-Rui Bai | Summary: We conduct a reverberation mapping (RM) campaign to spectroscopically monitor a sample of selected bright active galactic nuclei with large anticipated broad-line region (BLR) sizes adequate for spectroastrometric observations by the GRAVITY instrument on […]


Continue.. Spectroastrometry and Reverberation Mapping (SARM) of Active Galactic Nuclei. I. The H$β$ Broad-line Region Structure and Black Hole Mass of Five Quasars

Light Dark Matter Constraints from SuperCDMS HVeV Detectors Operated Underground with an Anticoincidence Event Selection

Posted by klaurent Stanford

Kavli Affiliate: D. B. Macfarlane | Summary:This article presents constraints on dark-matter-electron interactions obtained from the first underground data-taking campaign with multiple SuperCDMS HVeV detectors operated in the same housing. An exposure of 7.63 g-days is used to set upper limits on the dark-matter-electron scattering cross section for dark matter masses between 0.5 and 1000 […]


Continue.. Light Dark Matter Constraints from SuperCDMS HVeV Detectors Operated Underground with an Anticoincidence Event Selection

Circumnuclear Dust in Luminous Early-Type Galaxies — I. Sample Properties and Stellar Luminosity Models

Posted by dbos Peking

Kavli Affiliate: Luis C. Ho | First 5 Authors: Jared R. Davidson, Benjamin D. Boizelle, Jonelle L. Walsh, Aaron J. Barth, Emma Rasmussen | Summary: Dusty circumnuclear disks (CNDs) in luminous early-type galaxies (ETGs) show regular, dynamically cold molecular gas kinematics. For a growing number of ETGs, Atacama Large Millimeter/sub-millimeter Array (ALMA) CO imaging and […]


Continue.. Circumnuclear Dust in Luminous Early-Type Galaxies — I. Sample Properties and Stellar Luminosity Models

The discovery of a nearby 421~s transient with CHIME/FRB/Pulsar

Posted by dbos MIT

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Fengqiu Adam Dong, Tracy Clarke, Alice P. Curtin, Ajay Kumar, Ingrid Stairs | Summary: Neutron stars and white dwarfs are both dense remnants of post-main-sequence stars. Pulsars, magnetars and strongly magnetised white dwarfs have all been seen to been observed to exhibit coherent, pulsed radio emission […]


Continue.. The discovery of a nearby 421~s transient with CHIME/FRB/Pulsar

CHIME/FRB/Pulsar discovery of a nearby long period radio transient with a timing glitch

Posted by klaurent MIT

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Fengqiu Adam Dong, Fengqiu Adam Dong, , , | Summary: We present the discovery of a 421 s long period radio transient (LPT) using the CHIME telescope, CHIME J0630+25. The source is localized to RA=06:30:38.4$pm1’$ Dec=25:26:24$pm1’$ using voltage data acquired with the CHIME baseband system. A […]


Continue.. CHIME/FRB/Pulsar discovery of a nearby long period radio transient with a timing glitch

Coordinated JWST Imaging of Three Distance Indicators in a SN Host Galaxy and an Estimate of the TRGB Color Dependence

Posted by dbos Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Taylor J. Hoyt, In Sung Jang, Wendy L. Freedman, Barry F. Madore, Abigail J. Lee | Summary: Boasting a 6.5m mirror in space, JWST can increase by several times the number of supernovae (SNe) to which a redshift-independent distance has been measured with a precision distance […]


Continue.. Coordinated JWST Imaging of Three Distance Indicators in a SN Host Galaxy and an Estimate of the TRGB Color Dependence

TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M Dwarf Stars

Posted by dbos MIT

Kavli Affiliate: George R. Ricker | First 5 Authors: Joel D. Hartman, Daniel Bayliss, Rafael Brahm, Edward M. Bryant, Andrés Jordán | Summary: We present the discovery of TOI 762 A b and TIC 46432937 b, two giant planets transiting M dwarf stars. Transits of both systems were first detected from observations by the NASA […]


Continue.. TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M Dwarf Stars

TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M Dwarf Stars

Posted by dbos MIT

Kavli Affiliate: George R. Ricker | First 5 Authors: Joel D. Hartman, Daniel Bayliss, Rafael Brahm, Edward M. Bryant, Andrés Jordán | Summary: We present the discovery of TOI 762 A b and TIC 46432937 b, two giant planets transiting M dwarf stars. Transits of both systems were first detected from observations by the NASA […]


Continue.. TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M Dwarf Stars

TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M Dwarf Stars

Posted by klaurent MIT

Kavli Affiliate: Christopher Burke | Summary:We present the discovery of TOI 762 A b and TIC 46432937 b, two giant planets transiting M dwarf stars. Transits of both systems were first detected from observations by the NASA TESS mission, and the transiting objects are confirmed as planets through high-precision radial velocity (RV) observations carried out […]


Continue.. TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M Dwarf Stars

Across the soft gamma-ray regime: utilizing simultaneous detections in the Compton Spectrometer and Imager (COSI) and the Background and Transient Observer (BTO) to understand astrophysical transients

Posted by klaurent Tokyo

Kavli Affiliate: Tadayuki Takahashi | Summary:The Compton Spectrometer and Imager (COSI) is a NASA funded Small Explorer (SMEX) mission slated to launch in 2027. COSI will house a wide-field gamma-ray telescope designed to survey the entire sky in the 0.2–5 MeV range. Using germanium detectors, the instrument will provide imaging, spectroscopy, and polarimetry of astrophysical […]


Continue.. Across the soft gamma-ray regime: utilizing simultaneous detections in the Compton Spectrometer and Imager (COSI) and the Background and Transient Observer (BTO) to understand astrophysical transients