Strong Lensing analysis of SPT-CLJ2325$-$4111 and SPT-CLJ0049$-$2440, two Powerful Cosmic Telescopes ($R_E > 40”$) from the SPT Clusters Sample

Posted by dbos Chicago, This Week: Astrophysics

Kavli Affiliate: Michael D. Gladders | First 5 Authors: Guillaume Mahler, Keren Sharon, Matthew Bayliss, Lindsey. E. Bleem, Mark Brodwin | Summary: We report the results from a study of two massive ($M_{500c} > 6.0 times 10^{14} M_{odot}$) strong lensing clusters selected from the South Pole Telescope cluster survey for their high Einstein radius ($R_E […]


Continue.. Strong Lensing analysis of SPT-CLJ2325$-$4111 and SPT-CLJ0049$-$2440, two Powerful Cosmic Telescopes ($R_E > 40”$) from the SPT Clusters Sample

HST Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS0745-191

Posted by dbos MIT, This Week: Astrophysics

Kavli Affiliate: Michael McDonald | First 5 Authors: Julie Hlavacek-Larrondo, Hyunseop Choi, Minghao Guo, Annabelle Richard-Laferrière, Carter Rhea | Summary: We present Space Telescope Imaging Spectrograph observations from the Hubble Space Telescope of the supermassive black hole (SMBH) at the center of PKS0745-191, a brightest cluster galaxy (BCG) undergoing powerful radio-mode AGN feedback ($P_{rm cav}sim5times10^{45}$ […]


Continue.. HST Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS0745-191

Time-resolved Hubble Space Telescope UV observations of an X-ray quasi-periodic eruption source

Posted by dbos MIT, This Week: Astrophysics

Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Thomas Wevers, Muryel Guolo, Sean Lockwood, Andrew Mummery, Dheeraj R. Pasham | Summary: X-ray quasi-periodic eruptions (QPEs) are a novel mode of variability in nearby galactic nuclei whose origin remains unknown. Their multi-wavelength properties are poorly constrained, as studies have focused almost entirely on the X-ray […]


Continue.. Time-resolved Hubble Space Telescope UV observations of an X-ray quasi-periodic eruption source

Clumps as multiscale structures in cosmic noon galaxies

Posted by dbos Peking, This Week: Astrophysics

Kavli Affiliate: Luis C. Ho | First 5 Authors: Boris S Kalita, Tomoko L Suzuki, Daichi Kashino, John D Silverman, Emanuele Daddi | Summary: Star-forming clumps have been found to significantly influence the star formation of gas-rich $z>1$ galaxies. Using public data from JWST/NIRCam (COSMOS-Web) and ALMA (FMOS-COSMOS), we study a sample of 32 massive […]


Continue.. Clumps as multiscale structures in cosmic noon galaxies

A multi-wavelength investigation of spiral structures in $z > 1$ galaxies with JWST

Posted by dbos Peking, This Week: Astrophysics

Kavli Affiliate: Luis C. Ho | First 5 Authors: Boris S. Kalita, Si-Yue Yu, John D. Silverman, Emanuele Daddi, Luis C. Ho | Summary: Recent JWST observations have revealed the prevalence of spiral structures at $z > 1$. Unlike in the local Universe, the origin and the consequence of spirals at this epoch remain unexplored. […]


Continue.. A multi-wavelength investigation of spiral structures in $z > 1$ galaxies with JWST

Twinkle: A GPU-based binary-lens microlensing code with contour integration method

Posted by dbos Peking, This Week: Astrophysics

Kavli Affiliate: Subo Dong | First 5 Authors: Suwei Wang, Lile Wang, Subo Dong, , | Summary: With the rapidly increasing rate of microlensing planet detections, microlensing modeling software faces significant challenges in computation efficiency. Here, we develop the Twinkle code, an efficient and robust binary-lens modeling software suite optimized for heterogeneous computing devices, especially […]


Continue.. Twinkle: A GPU-based binary-lens microlensing code with contour integration method