Search Publications
Source-dependent Properties of Two Slow Solar Wind States
Moncuquet, Michel; Issautier, Karine; Poirier, Nicolas +3 more
Two states of the slow solar wind are identified from in situ measurements by the Parker Solar Probe (PSP) inside 50 solar radii from the Sun. At such distances the wind measured by PSP has not yet undergone significant transformation related to the expansion and propagation of the wind. We focus in this study on the properties of the quiet solar …
Probing Intra-Halo Light with Galaxy Stacking in CIBER Images
Cooray, Asantha; Matsuura, Shuji; Zemcov, Michael +13 more
We study the stellar halos of 0.2 ≲ z ≲ 0.5 galaxies with stellar masses spanning M* ~ 1010.5 to 1012M⊙ (approximately L* galaxies at this redshift) using imaging data from the Cosmic Infrared Background Experiment (CIBER). A previous CIBER fluctuation analysis suggested that intra-halo light …
Tracing the Milky Way's Vestigial Nuclear Jet
Bland-Hawthorn, Joss; Mukherjee, Dipanjan; Wagner, Alexander Y. +2 more
MeerKAT radio continuum and XMM-Newton X-ray images have recently revealed a spectacular bipolar channel at the Galactic Center that spans several degrees (~0.5 kpc). An intermittent jet likely formed this channel and is consistent with earlier evidence of a sustained, Seyfert-level outburst fueled by black hole accretion onto Sgr A* several Myr a…
Calibrating X-Ray Binary Luminosity Functions via Optical Reconnaissance. I. The Case of M83
Chandar, Rupali; Mok, Angus; Gallo, Elena +4 more
Building on recent work by Chandar et al., we construct X-ray luminosity functions (XLFs) for different classes of X-ray binary (XRB) donors in the nearby star-forming galaxy M83 through a novel methodology. Rather than classifying low- versus high-mass XRBs based on the scaling of the number of X-ray sources with stellar mass and star formation r…
StrayCats: A Catalog of NuSTAR Stray Light Observations
Hare, Jeremy; García, Javier A.; Madsen, Kristin K. +10 more
We present StrayCats, a catalog of NuSTAR stray light observations of X-ray sources. Stray light observations arise for sources 1°-4° away from the telescope pointing direction. At this off-axis angle, X-rays pass through a gap between the optics and aperture stop and so do not interact with the X-ray optics; instead, they directly illuminate the …
The JCMT BISTRO Survey: Evidence for Pinched Magnetic Fields in Quiescent Filaments of NGC 1333
Pattle, Kate; Ward-Thompson, Derek; Bastien, Pierre +33 more
We investigate the internal 3D magnetic structure of dense interstellar filaments within NGC 1333 using polarization data at 850 µm from the B-fields In STar-forming Region Observations survey at the James Clerk Maxwell Telescope. Theoretical models predict that the magnetic field lines in a filament will tend to be dragged radially inward (…
Black Hole and Galaxy Coevolution in Moderately Luminous Active Galactic Nuclei at z ∼ 1.4 in SXDF
Ueda, Yoshihiro; Toba, Yoshiki; Akiyama, Masayuki +1 more
We investigate the relation of black hole mass versus host stellar mass and that of mass accretion rate versus star formation rate (SFR) in moderately luminous ( $\mathrm{log}{L}_{\mathrm{bol}}\sim 44.5\mbox{--}46.5\ \mathrm{erg}\,{{\rm{s}}}^{-1}$ <!-- --> ), X-ray selected broad-line active galactic nuclei (AGNs) at z = 1.18-1.68 in the Sub…
Investigating Clumpy Galaxies in the Sloan Digital Sky Survey Stripe 82 Using the Galaxy Zoo
Charlot, Stéphane; Chevallard, Jacopo; Scarlata, Claudia +7 more
Giant, star-forming clumps are a common feature prevalent among high-redshift star-forming galaxies and play a critical role in shaping their chaotic morphologies and yet, their nature and role in galaxy evolution remains to be fully understood. A majority of the effort to study clumps has been focused at high redshifts, and local clump studies ha…
When the Peas Jump around the Pod: How Stellar Clustering Affects the Observed Correlations between Planet Properties in Multiplanet Systems
Kruijssen, J. M. Diederik; Longmore, Steven N.; Chevance, Mélanie
Recent studies have shown that the radii and masses of adjacent planets within a planetary system are correlated. It is unknown how this "peas-in-a-pod" phenomenon originates, whether it is in place at birth or requires evolution, and whether it (initially) applies only to neighboring planets or to all planets within a system. Here we address thes…
Magnetic Helicity Estimations in Models and Observations of the Solar Magnetic Field. IV. Application to Solar Observations
Liu, Y.; Guo, Y.; Pariat, E. +9 more
In this ISSI-supported series of studies on magnetic helicity in the Sun, we systematically implement different magnetic helicity calculation methods on high-quality solar magnetogram observations. We apply finite-volume, discrete flux tube (in particular, connectivity-based) and flux-integration methods to data from Hinode's Solar Optical Telesco…