Large Uncertainties in the Thermodynamics of Phosphorus (III) Oxide (P$_4$O$_6$) Have Significant Implications for Phosphorus Species in Planetary Atmospheres

Posted by klaurent MIT, This Week: Astrophysics

Kavli Affiliate: Sara Seager | First 5 Authors: William Bains, Matthew A. Pasek, Sukrit Ranjan, Janusz J. Petkowski, Arthur Omran, Sara Seager | Summary: Phosphorus (III) oxide (P$_4$O$_6$) has been suggested to be a major component of the gas phase phosphorus chemistry in the atmospheres of gas giant planets and of Venus. However, P$_4$O$_6$’s proposed […]


Continue.. Large Uncertainties in the Thermodynamics of Phosphorus (III) Oxide (P$_4$O$_6$) Have Significant Implications for Phosphorus Species in Planetary Atmospheres

TOI-1859b: A 64-Day Warm Jupiter on an Eccentric and Misaligned Orbit

Posted by klaurent MIT, This Week: Astrophysics

Kavli Affiliate: Avi Shporer | First 5 Authors: Jiayin Dong, Songhu Wang, Malena Rice, George Zhou, Chelsea X. Huang | Summary: Warm Jupiters are close-in giant planets with relatively large planet-star separations (i.e., $10< a/R_star <100$). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the […]


Continue.. TOI-1859b: A 64-Day Warm Jupiter on an Eccentric and Misaligned Orbit

Resolving the Binary Components of the Outbursting Protostar HBC 494 with ALMA

Posted by klaurent MIT, This Week: Astrophysics

Kavli Affiliate: David A. Principe | First 5 Authors: Pedro Henrique Nogueira, Alice Zurlo, Sebastián Pérez, Camilo González-Ruilova, Lucas A. Cieza | Summary: Episodic accretion is a low-mass pre-main sequence phenomenon characterized by sudden outbursts of enhanced accretion. These objects are classified into two: protostars with elevated levels of accretion that lasts for decades or […]


Continue.. Resolving the Binary Components of the Outbursting Protostar HBC 494 with ALMA

X-ray polarimetry of the accreting pulsar GX 301-2

Posted by klaurent MIT, This Week: Astrophysics

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Valery F. Suleimanov, Sofia V. Forsblom, Sergey S. Tsygankov, Juri Poutanen, Victor Doroshenko | Summary: The phase- and energy-resolved polarization measurements of accreting X-ray pulsars (XRPs) allow us to test different theoretical models of their emission, as well as to provide an avenue to determine the […]


Continue.. X-ray polarimetry of the accreting pulsar GX 301-2

X-ray Polarization of BL Lacertae in Outburst

Posted by klaurent MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: We report the first $> 99%$ confidence detection of X-ray polarization in BL Lacertae. During a recent X-ray/$gamma$-ray outburst, a 287 ksec observation (2022 November 27-30) was taken using the Imaging X-ray Polarimetry Explorer ({it IXPE}), together with contemporaneous […]


Continue.. X-ray Polarization of BL Lacertae in Outburst

Machine Learning for Quantum-Enhanced Gravitational-Wave Observatories

Posted by klaurent MIT

Kavli Affiliate: Lisa Barsotti | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Machine learning has become an effective tool for processing the extensive data sets produced by large physics experiments. Gravitational-wave detectors are now listening to the universe with quantum-enhanced sensitivity, accomplished with the injection of squeezed vacuum states. Squeezed state preparation […]


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Compact [C II] emitters around a C IV absorption complex at redshift 5.7

Posted by klaurent MIT

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: The physical conditions of the circumgalactic medium are probed by intervening absorption-line systems in the spectrum of background quasi-stellar objects out to the epoch of cosmic reionization. A correlation between the ionization state of the absorbing gas and the […]


Continue.. Compact [C II] emitters around a C IV absorption complex at redshift 5.7

Discovery of X-ray polarization angle rotation in active galaxy Mrk 421

Posted by klaurent MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: The magnetic field conditions in astrophysical relativistic jets can be probed by multiwavelength polarimetry, which has been recently extended to X-rays. For example, one can track how the magnetic field changes in the flow of the radiating particles by […]


Continue.. Discovery of X-ray polarization angle rotation in active galaxy Mrk 421

Constraints on the ultra-fast outflows in the narrow-line Seyfert 1 galaxy Mrk 1044 from high-resolution time- and flux-resolved spectroscopy

Posted by klaurent MIT

Kavli Affiliate: Erin Kara | First 5 Authors: Yerong Xu, Ciro Pinto, Daniele Rogantini, Stefano Bianchi, Matteo Guainazzi | Summary: Ultra-fast outflows (UFOs) have been revealed in a large number of active galactic nuclei (AGN) and are regarded as promising candidates for AGN feedback on the host galaxy. The nature and launching mechanism of UFOs […]


Continue.. Constraints on the ultra-fast outflows in the narrow-line Seyfert 1 galaxy Mrk 1044 from high-resolution time- and flux-resolved spectroscopy

Flux Calibration of CHIME/FRB Intensity Data

Posted by klaurent MIT

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Bridget C. Andersen, Chitrang Patel, Charanjot Brar, P. J. Boyle, Emmanuel Fonseca | Summary: Fast radio bursts (FRBs) are bright radio transients of micro-to-millisecond duration and unknown extragalactic origin. Central to the mystery of FRBs are their extremely high characteristic energies, which surpass the typical energies […]


Continue.. Flux Calibration of CHIME/FRB Intensity Data