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A flat-spectrum candidate for a track-type high-energy neutrino emission event, the case of blazar PKS 0723-008
Biermann, P. L.; Kun, E.; Gergely, L. Á.
By cross-correlating both the Parkes Catalogue and the Second Planck Catalogue of Compact Sources with the arrival direction of the track-type neutrinos detected by the IceCube Neutrino Observatory, we find the flat-spectrum blazar PKS 0723-008 as a good candidate for the high-energy neutrino event 5 (ID5). Apart from its coordinates matching thos…
Further Constraints on Variations in the Initial Mass Function from Low-mass X-ray Binary Populations
Kundu, Arunav; Coulter, David A.; Zepf, Stephen E. +6 more
We present constraints on variations in the initial mass function (IMF) of nine local early-type galaxies based on their low-mass X-ray binary (LMXB) populations. Comprised of accreting black holes and neutron stars, these LMXBs can be used to constrain the important high-mass end of the IMF. We consider LMXB populations beyond the cores of the ga…
A Submillimeter Perspective on the Goods Fields. II. The High Radio Power Population in the Goods-N
Wang, W. -H.; Owen, F. N.; Barger, A. J. +2 more
We use ultradeep 20 cm data from the Karl G. Jansky Very Large Array and 850 µm data from SCUBA-2 and the Submillimeter Array of an 124 arcmin2 region of the Chandra Deep Field-north to analyze the high radio power ({P}20{cm}> {10}31 erg s-1 Hz-1) population. We find that 20 (42 ± 9%)…
Is There a CME Rate Floor? CME and Magnetic Flux Values for the Last Four Solar Cycle Minima
St. Cyr, O. C.; Webb, D. F.; Howard, R. A. +1 more
The recent prolonged activity minimum has led to the question of whether there is a base level of the solar magnetic field evolution that yields a “floor” in activity levels and also in the solar wind magnetic field strength. Recently, a flux transport model coupled with magneto-frictional simulations has been used to simulate the continuous magne…
Action-based Dynamical Modeling for the Milky Way Disk: The Influence of Spiral Arms
Bovy, Jo; Rix, Hans-Walter; Trick, Wilma H. +1 more
RoadMapping is a dynamical modeling machinery developed to constrain the Milky Way’s (MW) gravitational potential by simultaneously fitting an axisymmetric parametrized potential and an action-based orbit distribution function (DF) to discrete 6D phase-space measurements of stars in the Galactic disk. In this work, we demonstrate RoadMapping's rob…
ALMA CO Clouds and Young Star Complexes in the Interacting Galaxies IC 2163 and NGC 2207
Brinks, Elias; Struck, Curtis; Elmegreen, Bruce G. +5 more
Atacama Large Millimeter Array (ALMA) observations of CO(1-0) emission in the interacting galaxies IC 2163 and NGC 2207 are used to determine the properties of molecular clouds and their association with star-forming regions observed with the Hubble Space Telescope. Half of the CO mass is in 249 clouds, each more massive than 4.0× {10}5…
Systematic error of the Gaia DR1 TGAS parallaxes from data for the red giant clump
Gontcharov, G. A.
Based on the Gaia DR1 TGAS parallaxes and photometry from the Tycho-2, Gaia, 2MASS, andWISE catalogues, we have produced a sample of 100 000 clump red giants within 800 pc of the Sun. The systematic variations of the mode of their absolute magnitude as a function of the distance, magnitude, and other parameters have been analyzed. We show that the…
XMM-Newton and NuSTAR Simultaneous X-Ray Observations of IGR J11215-5952
Tiengo, A.; Sidoli, L.; Natalucci, L. +3 more
We report the results of an XMM-Newton and NuSTAR coordinated observation of the Supergiant Fast X-ray Transient (SFXT) IGR J11215-5952, performed on 2016 February 14, during the expected peak of its brief outburst, which repeats every ∼165 days. Timing and spectral analysis were performed simultaneously in the energy band 0.4-78 keV. A spin perio…
Contribution of energetic and heavy ions to the plasma pressure: The 27 September to 3 October 2002 storm
Dandouras, I.; Daly, P. W.; Klecker, B. +5 more
Magnetospheric plasma sheet ions drift toward the Earth and populate the ring current. The ring current plasma pressure distorts the terrestrial internal magnetic field at the surface, and this disturbance strongly affects the strength of a magnetic storm. The contribution of energetic ions (>40 keV) and of heavy ions to the total plasma pressu…
Borexino's search for low-energy neutrino and antineutrino signals correlated with gamma-ray bursts
Wang, H.; Meyer, M.; Smirnov, O. +98 more
A search for neutrino and antineutrino events correlated with 2350 gamma-ray bursts (GRBs) is performed with Borexino data collected between December 2007 and November 2015. No statistically significant excess over background is observed. We look for electron antineutrinos (νbare) that inverse beta decay on protons with energies from 1.…