Chronicling the reionization history at $6lesssim z lesssim 7$ with emergent quasar damping wings

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: Dominika Ďurovčíková, Anna-Christina Eilers, Huanqing Chen, Sindhu Satyavolu, Girish Kulkarni | Summary: The spectra of high-redshift ($zgtrsim 6$) quasars contain valuable information on the progression of the Epoch of Reionization (EoR). At redshifts $z<6$, the observed Lyman-series forest shows that the intergalactic medium (IGM) is nearly […]


Continue.. Chronicling the reionization history at $6lesssim z lesssim 7$ with emergent quasar damping wings

Forecasts for Galaxy Formation and Dark Matter Constraints from Dwarf Galaxy Surveys

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Ethan O. Nadler, Vera Gluscevic, Trey Driskell, Risa H. Wechsler, Leonidas A. Moustakas | Summary: The abundance of faint dwarf galaxies is determined by the underlying population of low-mass dark matter (DM) halos and the efficiency of galaxy formation in these systems. Here, we quantify potential […]


Continue.. Forecasts for Galaxy Formation and Dark Matter Constraints from Dwarf Galaxy Surveys

Forecasts for Galaxy Formation and Dark Matter Constraints from Dwarf Galaxy Surveys

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Ethan O. Nadler, Vera Gluscevic, Trey Driskell, Risa H. Wechsler, Leonidas A. Moustakas | Summary: The abundance of faint dwarf galaxies is determined by the underlying population of low-mass dark matter (DM) halos and the efficiency of galaxy formation in these systems. Here, we quantify potential […]


Continue.. Forecasts for Galaxy Formation and Dark Matter Constraints from Dwarf Galaxy Surveys

Polarization Leakage and the IXPE PSF

Kavli Affiliate: Roger W. Romani | First 5 Authors: Jack T. Dinsmore, Roger W. Romani, , , | Summary: By measuring photoelectron tracks, the gas pixel detectors of the Imaging X-ray Polarimetry Explorer satellite provide estimates of the photon detection location and its electric vector position angle (EVPA). However, imperfections in reconstructing event positions blur […]


Continue.. Polarization Leakage and the IXPE PSF

Polarization Leakage and the IXPE PSF

Kavli Affiliate: Roger W. Romani | First 5 Authors: Jack T. Dinsmore, Roger W. Romani, , , | Summary: By measuring photoelectron tracks, the gas pixel detectors of the Imaging X-ray Polarimetry Explorer satellite provide estimates of the photon detection location and its electric vector position angle (EVPA). However, imperfections in reconstructing event positions blur […]


Continue.. Polarization Leakage and the IXPE PSF

Highly-coherent quasi-periodic oscillations in the ‘heartbeat’ black hole X-ray binary IGR J17091-3624

Kavli Affiliate: Erin Kara | First 5 Authors: Jingyi Wang, Erin Kara, Jeroen Homan, James F. Steiner, Diego Altamirano | Summary: IGR J17091-3624 is a black hole X-ray binary (BHXB), often referred to as the ‘twin’ of GRS 1915+105 because it is the only other known BHXB that can show exotic ‘heartbeat’-like variability that is […]


Continue.. Highly-coherent quasi-periodic oscillations in the ‘heartbeat’ black hole X-ray binary IGR J17091-3624

The 2022 Outburst of IGR J17091-3624: Connecting the exotic GRS 1915+105 to standard black hole X-ray binaries

Kavli Affiliate: Erin Kara | First 5 Authors: Jingyi Wang, Erin Kara, Javier A. García, Diego Altamirano, Tomaso Belloni | Summary: While the standard X-ray variability of black hole X-ray binaries (BHXBs) is stochastic and noisy, there are two known BHXBs that exhibit exotic `heartbeat’-like variability in their light curves: GRS 1915+105 and IGR J17091-3624. […]


Continue.. The 2022 Outburst of IGR J17091-3624: Connecting the exotic GRS 1915+105 to standard black hole X-ray binaries

COOL-LAMPS VI: Lens model and New Constraints on the Properties of COOL J1241+2219, a Bright z = 5 Lyman Break Galaxy and its z = 1 Cluster Lens

Kavli Affiliate: Michael D. Gladders | First 5 Authors: Maxwell Klein, Keren Sharon, Kate Napier, Michael D. Gladders, Gourav Khullar | Summary: We present a strong lensing analysis of COOL J1241+2219, the brightest known gravitationally lensed galaxy at $z geq 5$, based on new multi-band Hubble Space Telescope (HST) imaging data. The lensed galaxy has […]


Continue.. COOL-LAMPS VI: Lens model and New Constraints on the Properties of COOL J1241+2219, a Bright z = 5 Lyman Break Galaxy and its z = 1 Cluster Lens

The Mass Dependence of Hα Emission and Stellar Spindown for Fully Convective M Dwarfs

Kavli Affiliate: David Charbonneau | First 5 Authors: Emily K. Pass, David Charbonneau, David W. Latham, Perry Berlind, Michael L. Calkins | Summary: Fully convective M dwarfs typically remain rapidly rotating and magnetically active for billions of years, followed by an abrupt and mass-dependent transition to slow rotation and quiescence. A robust understanding of this […]


Continue.. The Mass Dependence of Hα Emission and Stellar Spindown for Fully Convective M Dwarfs