JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging

Posted by klaurent Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Marcia J. Rieke, Brant E. Robertson, Sandro Tacchella, Kevin Hainline, Benjamin D. Johnson | Summary: JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant universe. Adding to the new legacy of JWST observations, we present the first NIRCam […]


Continue.. JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging

Complex variations of X-ray polarization in the X-ray pulsar LS V +44 17/RX J0440.9+4431

Posted by klaurent MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Victor Doroshenko, Juri Poutanen, Jeremy Heyl, Sergey S. Tsygankov, Ilaria Caiazzo | Summary: We report on Imaging X-ray polarimetry explorer (IXPE) observations of the Be-transient X-ray pulsar LS V +44 17/RX J0440.9+4431 made at two luminosity levels during the giant outburst in January–February 2023. Considering the […]


Continue.. Complex variations of X-ray polarization in the X-ray pulsar LS V +44 17/RX J0440.9+4431

The Supersonic Project: Star Formation in Early Star Clusters without Dark Matter

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: William Lake, Smadar Naoz, Federico Marinacci, Blakesley Burkhart, Mark Vogelsberger | Summary: The formation mechanism of globular clusters (GCs) has long been debated by astronomers. It was recently proposed that Supersonically Induced Gas Objects (SIGOs), which formed in the early Universe due to the supersonic relative motion […]


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JWST-JADES. Possible Population III signatures at z=10.6 in the halo of GN-z11

Posted by dbos Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Roberto Maiolino, Hannah Uebler, Michele Perna, Jan Scholtz, Francesco D’Eugenio | Summary: Finding the first generation of stars formed out of pristine gas in the early Universe, known as Population III (PopIII) stars, is one of the most important goals of modern astrophysics. Recent models have suggested […]


Continue.. JWST-JADES. Possible Population III signatures at z=10.6 in the halo of GN-z11

Intersection cohomology groups of instanton moduli spaces and cotangent bundles of affine flag varieties

Posted by klaurent Tokyo

Kavli Affiliate: Hiraku Nakajima | First 5 Authors: Hiraku Nakajima, , , , | Summary: This is an abstract for my talk at the 68th Geometry Symposium on August 31, 2021. It is based on my joint work in progress with Dinakar Muthiah: a conjectural characterization of the equivariant costalk of the intersection cohomology complex […]


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Precise measurement of the $D^+_s$ lifetime at Belle II

Posted by dbos Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Aihara, N. Akopov | Summary: We measure the lifetime of the $D_s^+$ meson using a data sample of 207 fb$^{-1}$ collected by the Belle II experiment running at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. The lifetime is determined by […]


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Unravelling the Dust Attenuation Scaling Relations and their Evolution

Posted by dbos Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Gabriel Maheson, Roberto Maiolino, Mirko Curti, Ryan Sanders, Sandro Tacchella | Summary: We explore the dependence of dust attenuation, as traced by the $rm H_{alpha}/rm H_{beta}$ Balmer decrement, on galactic properties by using a large sample of SDSS spectra. We use both Partial Correlation Coefficients (PCC) and […]


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Discovering New Interpretable Conservation Laws as Sparse Invariants

Posted by klaurent MIT

Kavli Affiliate: Max Tegmark | First 5 Authors: Ziming Liu, Patrick Obin Sturm, Saketh Bharadwaj, Sam Silva, Max Tegmark | Summary: Discovering conservation laws for a given dynamical system is important but challenging. In a theorist setup (differential equations and basis functions are both known), we propose the Sparse Invariant Detector (SID), an algorithm that […]


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Population II Distance Indicators: RR Lyrae Variables, Tip of the Red Giant Branch (TRGB) Stars and J-Branch Asymptotic Giant Branch (JAGB/Carbon) Stars

Posted by Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Barry F. Madore, Wendy L. Freedman, , , | Summary: We review the theoretical underpinnings, evolutionary status, calibrations and current applications of three bright Population II extragalactic distance indicators: Tip of the Red Giant Branch (TRGB) stars, RR Lyrae variables and J-Branch Asymptotic Giant Branch (JAGB/Carbon) […]


Continue.. Population II Distance Indicators: RR Lyrae Variables, Tip of the Red Giant Branch (TRGB) Stars and J-Branch Asymptotic Giant Branch (JAGB/Carbon) Stars