The black hole low mass X-ray binary V404 Cygni is part of a wide hierarchical triple, and formed without a kick

Kavli Affiliate: Anna Frebel | First 5 Authors: Kevin B. Burdge, Kareem El-Badry, Erin Kara, Claude Canizares, Deepto Chakrabarty | Summary: Evidence suggests that when compact objects such as black holes and neutron stars form, they may receive a “natal kick,” where the stellar remnant gains momentum. Observational evidence for neutron star kicks is substantial, […]


Continue.. The black hole low mass X-ray binary V404 Cygni is part of a wide hierarchical triple, and formed without a kick

The black hole low mass X-ray binary V404 Cygni is part of a wide hierarchical triple, and formed without a kick

Kavli Affiliate: Erin Kara | First 5 Authors: Kevin B. Burdge, Kareem El-Badry, Erin Kara, Claude Canizares, Deepto Chakrabarty | Summary: Evidence suggests that when compact objects such as black holes and neutron stars form, they may receive a “natal kick,” where the stellar remnant gains momentum. Observational evidence for neutron star kicks is substantial, […]


Continue.. The black hole low mass X-ray binary V404 Cygni is part of a wide hierarchical triple, and formed without a kick

The black hole low mass X-ray binary V404 Cygni is part of a wide hierarchical triple, and formed without a kick

Kavli Affiliate: Anna Frebel | First 5 Authors: Kevin B. Burdge, Kareem El-Badry, Erin Kara, Claude Canizares, Deepto Chakrabarty | Summary: Evidence suggests that when compact objects such as black holes and neutron stars form, they may receive a “natal kick,” where the stellar remnant gains momentum. Observational evidence for neutron star kicks is substantial, […]


Continue.. The black hole low mass X-ray binary V404 Cygni is part of a wide hierarchical triple, and formed without a kick

The Rise of Faint, Red AGN at $z>4$: A Sample of Little Red Dots in the JWST Extragalactic Legacy Fields

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Dale D. Kocevski, Steven L. Finkelstein, Guillermo Barro, Anthony J. Taylor, Antonello CalabrĂ² | Summary: We present a sample of 341 "little red dots" (LRDs) spanning the redshift range $zsim2-11$ using data from the CEERS, PRIMER, JADES, UNCOVER and NGDEEP surveys. These sources are likely heavily-reddened AGN […]


Continue.. The Rise of Faint, Red AGN at $z>4$: A Sample of Little Red Dots in the JWST Extragalactic Legacy Fields

The Rise of Faint, Red AGN at $z>4$: A Sample of Little Red Dots in the JWST Extragalactic Legacy Fields

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Dale D. Kocevski, Steven L. Finkelstein, Guillermo Barro, Anthony J. Taylor, Antonello CalabrĂ² | Summary: We present a sample of 341 "little red dots" (LRDs) spanning the redshift range $zsim2-11$ using data from the CEERS, PRIMER, JADES, UNCOVER and NGDEEP surveys. These sources are likely heavily-reddened AGN […]


Continue.. The Rise of Faint, Red AGN at $z>4$: A Sample of Little Red Dots in the JWST Extragalactic Legacy Fields

Relation between the keV-MeV and TeV emission of GRB 221009A and its implications

Kavli Affiliate: Zhuo Li | First 5 Authors: Yan-Qiu Zhang, Hao-Xiang Lin, Shao-Lin Xiong, Zhuo Li, Ming-Yu Ge | Summary: Gamma-ray bursts (GRBs) are believed to launch relativistic jets, which generate prompt emission by their internal processes and drive external shocks into surrounding medium, accounting for the long-lasting afterglow emission. However, how the jet powers […]


Continue.. Relation between the keV-MeV and TeV emission of GRB 221009A and its implications

Relation between the keV-MeV and TeV emission of GRB 221009A and its implications

Kavli Affiliate: Zhuo Li | First 5 Authors: Yan-Qiu Zhang, Hao-Xiang Lin, Shao-Lin Xiong, Zhuo Li, Ming-Yu Ge | Summary: Gamma-ray bursts (GRBs) are believed to launch relativistic jets, which generate prompt emission by internal processes, and produce long-lasting afterglows by driving external shocks into surrounding medium. However, how the jet powers the external shock […]


Continue.. Relation between the keV-MeV and TeV emission of GRB 221009A and its implications

Constraints on the spacetime variation of the fine-structure constant using DESI emission-line galaxies

Kavli Affiliate: Linhua Jiang | First 5 Authors: Linhua Jiang, Zhiwei Pan, Jessica Nicole Aguilar, Steven Ahlen, Robert Blum | Summary: We present strong constraints on the spacetime variation of the fine-structure constant $alpha$ using the Dark Energy Spectroscopic Instrument (DESI). In this pilot work, we utilize $sim110,000$ galaxies with strong and narrow O III […]


Continue.. Constraints on the spacetime variation of the fine-structure constant using DESI emission-line galaxies

Constraints on the spacetime variation of the fine-structure constant using DESI emission-line galaxies

Kavli Affiliate: Linhua Jiang | First 5 Authors: Linhua Jiang, Zhiwei Pan, Jessica Nicole Aguilar, Steven Ahlen, Robert Blum | Summary: We present strong constraints on the spacetime variation of the fine-structure constant $alpha$ using the Dark Energy Spectroscopic Instrument (DESI). In this pilot work, we utilize $sim110,000$ galaxies with strong and narrow O III […]


Continue.. Constraints on the spacetime variation of the fine-structure constant using DESI emission-line galaxies

Constraints on the spacetime variation of the fine-structure constant using DESI emission-line galaxies

Kavli Affiliate: Linhua Jiang | First 5 Authors: Linhua Jiang, Zhiwei Pan, Jessica Nicole Aguilar, Steven Ahlen, Robert Blum | Summary: We present strong constraints on the spacetime variation of the fine-structure constant $alpha$ using the Dark Energy Spectroscopic Instrument (DESI). In this pilot work, we utilize $sim110,000$ galaxies with strong and narrow O III […]


Continue.. Constraints on the spacetime variation of the fine-structure constant using DESI emission-line galaxies