The Astrophysical Distance Scale: V. A 2% Distance to the Local Group Spiral M33 via the JAGB Method, Tip of the Red Giant Branch, and Leavitt Law

Posted by klaurent Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Abigail J. Lee, Laurie Rousseau-Nepton, Wendy L. Freedman, Barry F. Madore, Maria-Rosa L. Cioni | Summary: The J-region asymptotic giant branch (JAGB) method is a new standard candle that is based on the stable intrinsic J-band magnitude of color-selected carbon stars, and has a precision comparable […]


Continue.. The Astrophysical Distance Scale: V. A 2% Distance to the Local Group Spiral M33 via the JAGB Method, Tip of the Red Giant Branch, and Leavitt Law

The Astrophysical Distance Scale: V. A 2% Distance to the Local Group Spiral M33 via the JAGB Method, Tip of the Red Giant Branch, and Leavitt Law

Posted by Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Abigail J. Lee, Laurie Rousseau-Nepton, Wendy L. Freedman, Barry F. Madore, Maria-Rosa L. Cioni | Summary: The J-region asymptotic giant branch (JAGB) method is a new standard candle that is based on the stable intrinsic J-band magnitude of color-selected carbon stars, and has a precision comparable […]


Continue.. The Astrophysical Distance Scale: V. A 2% Distance to the Local Group Spiral M33 via the JAGB Method, Tip of the Red Giant Branch, and Leavitt Law

Split personalities in Bayesian Neural Networks: the case for full marginalisation

Posted by klaurent Cambridge

Kavli Affiliate: Anthony Lasenby | First 5 Authors: David Yallup, Will Handley, Mike Hobson, Anthony Lasenby, Pablo Lemos | Summary: The true posterior distribution of a Bayesian neural network is massively multimodal. Whilst most of these modes are functionally equivalent, we demonstrate that there remains a level of real multimodality that manifests in even the […]


Continue.. Split personalities in Bayesian Neural Networks: the case for full marginalisation

Split personalities in Bayesian Neural Networks: the case for full marginalisation

Posted by klaurent Cambridge

Kavli Affiliate: Anthony Lasenby | Summary:The true posterior distribution of a Bayesian neural network is massively multimodal. Whilst most of these modes are functionally equivalent, we demonstrate that there remains a level of real multimodality that manifests in even the simplest neural network setups. It is only by fully marginalising over all posterior modes, using […]


Continue.. Split personalities in Bayesian Neural Networks: the case for full marginalisation

The Ages of Optically Bright Sub-Clusters in the Serpens Star-Forming Region

Posted by klaurent Peking

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Xingyu Zhou, Gregory J. Herczeg, Yao Liu, Min Fang, Michael Kuhn | Summary: The Serpens Molecular Cloud is one of the most active star-forming regions within 500 pc, with over one thousand of YSOs at different evolutionary stages. The ages of the member stars inform us […]


Continue.. The Ages of Optically Bright Sub-Clusters in the Serpens Star-Forming Region

High-precision temperature monitoring system for room-temperature equipment in astrophysical observations

Posted by klaurent Tokyo

Kavli Affiliate: Nobuhiko Katayama | First 5 Authors: Daiki Tanabe, Masaya Hasegawa, Masashi Hazumi, Nobuhiko Katayama, Shuhei Kikuchi | Summary: We present a precise thermometry system to monitor room-temperature components of a telescope for radio-astronomy such as cosmic microwave background (CMB) observation. The system realizes precision of 1 mK${rm sqrt{s}}$ on a timescale of 20 […]


Continue.. High-precision temperature monitoring system for room-temperature equipment in astrophysical observations

High-precision temperature monitoring system for room-temperature equipment in astrophysical observations

Posted by klaurent Tokyo

Kavli Affiliate: Nobuhiko Katayama | Summary:We present a precise thermometry system to monitor room-temperature components of a telescope for radio-astronomy such as cosmic microwave background (CMB) observation. The system realizes precision of 1 mK$rm sqrts$ on a timescale of 20 seconds at 300 K. We achieved this high precision by tracking only relative fluctuation and […]


Continue.. High-precision temperature monitoring system for room-temperature equipment in astrophysical observations

CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

Posted by klaurent Cambridge

Kavli Affiliate: George Efstathiou | Summary:We present angular power spectra and cosmological parameter constraints derived from the Planck PR4 (NPIPE) maps of the Cosmic Microwave Background. NPIPE, released by the Planck Collaboration in 2020, is a new processing pipeline for producing calibrated frequency maps from Planck data. We have created new versions of the CamSpec […]


Continue.. CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

Formation of episodic jets and associated flares from black hole accretion systems

Posted by klaurent Peking

Kavli Affiliate: Feng Yuan | First 5 Authors: Miljenko Cemeljic, Hai Yang, Feng Yuan, Hsien Shang, | Summary: Episodic ejections of blobs (episodic jets) are widely observed in black hole sources and usually associated with flares. In this paper, by performing and analyzing three dimensional general relativity magnetohydrodynamical numerical simulations of accretion flows, we investigate […]


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There and back again: understanding the critical properties of backsplash galaxies

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Josh Borrow, Mark Vogelsberger, Stephanie O’Neil, Michael A. McDonald, Aaron Smith | Summary: Backsplash galaxies are galaxies that once resided inside a cluster, and have migrated back outside as they move towards the apocenter of their orbit. The kinematic properties of these galaxies are well understood, thanks […]


Continue.. There and back again: understanding the critical properties of backsplash galaxies