Search Publications
Missions
Journals
Publication Years
Spatial distribution of Langmuir waves observed upstream of Saturn's bow shock by Cassini
Gurnett, D. A.; Hospodarsky, G. B.; Kurth, W. S. +3 more
We present the spatial distribution and spectral properties of Langmuir waves observed upstream of Saturn's bow shock by the Cassini spacecraft. The entire 10 kHz wideband data set obtained between June 2004 and December 2014 has been analyzed using an automated procedure. Almost 106 waveform snapshots with intense narrowband emissions …
Two giant outbursts of V0332+53 observed with INTEGRAL
Kretschmar, Peter; Pottschmidt, Katja; Wilms, Jörn +7 more
Context. In July 2015, the high-mass X-ray binary V0332+53 underwent a giant outburst, a decade after the previous one. V0332+53 hosts a strongly magnetized neutron star. During the 2004-2005 outburst, an anti-correlation between the centroid energy of its fundamental cyclotron resonance scattering features (CRSFs) and the X-ray luminosity was obs…
A Direct Linkage between AGN Outflows in the Narrow-line Regions and the X-Ray Emission from the Accretion Disks
Wang, J.; Wei, J. Y.; Xu, D. W.
The origin of outflow in the narrow-line region (NLR) of the active galactic nucleus (AGN) is studied in this paper by focusing on the relationship between the [O III]λ5007 line profile and the hard-X-ray (in a bandpass of 2-10 keV) emission from the central super-massive black hole (SMBH) in type-I AGNs. A sample of 47 local X-ray selected type-I…
Reconstructing thawing quintessence with multiple datasets
Liddle, Andrew R.; Parkinson, David; Sahlén, Martin +1 more
In this work we model the quintessence potential in a Taylor series expansion, up to second order, around the present-day value of the scalar field. The field is evolved in a thawing regime assuming zero initial velocity. We use the latest data from the Planck satellite, baryonic acoustic oscillations observations from the Sloan Digital Sky Survey…
Catalog of candidates for quasars at 3 < z < 5.5 selected among X-Ray sources from the 3XMM-DR4 survey of the XMM-Newton observatory
Sazonov, S. Yu.; Khorunzhev, G. A.; Burenin, R. A. +1 more
We have compiled a catalog of 903 candidates for type 1 quasars at redshifts 3 < z < 5.5 selected among the X-ray sources of the "serendipitous" XMM-Newton survey presented in the 3XMMDR4 catalog (the median X-ray flux is ≈5 × 10-15 erg s-1 cm-2 in the 0.5-2 keV energy band) and located at high Galactic latit…
Globular cluster scale sizes in giant galaxies: orbital anisotropy and tidally underfilling clusters in M87, NGC 1399 and NGC 5128
Sills, Alison; Puzia, Thomas H.; Paolillo, Maurizio +4 more
We investigate the shallow increase in globular cluster half-light radii with projected galactocentric distance Rgc observed in the giant galaxies M87, NGC 1399, and NGC 5128. To model the trend in each galaxy, we explore the effects of orbital anisotropy and tidally underfilling clusters. While a strong degeneracy exists between the tw…
Realization of power law inflation & variants via variation of the strong coupling constant
AlHallak, M.; Chamoun, N.
We present a model of power law inflation generated by variation of the strong coupling constant. We then extend the model to two varying coupling constants which leads to a potential consisting of a linear combination of exponential terms. Some variants of the latter may be self-consistent and can accommodate the experimental data of the Planck 2…
Total infrared luminosity estimation from local galaxies in AKARI all sky survey
Takeuchi, T. T.; Pollo, A.; Solarz, A.
We aim to use the a new and improved version of AKARI all sky survey catalogue of far-infrared sources to recalibrate the formula to derive the total infrared luminosity. We cross-match the faint source catalogue (FSC) of IRAS with the new AKARI-FIS and obtained a sample of 2430 objects. Then we calculate the total infrared (TIR) luminosity L…
The faint end of the 250 µm luminosity function at z < 0.5
Wang, L.; Cooray, A.; Farrah, D. +12 more
Aims: We aim to study the 250 µm luminosity function (LF) down to much fainter luminosities than achieved by previous efforts.
Methods: We developed a modified stacking method to reconstruct the 250 µm LF using optically selected galaxies from the SDSS survey and Herschel maps of the GAMA equatorial fields and Stripe 82. Our …
Long-period Variations in the Radial Velocity of Spectroscopic Binary M Giant µ Ursae Majoris
Lee, Byeong-Cheol; Park, Myeong-Gu; Han, Inwoo +4 more
We report that the spectroscopic binary µ Ursae Majoris (µ UMa) has secondary RV variations of 471.2 days in addition to those of 230.0 days already known. Keplerian orbit analysis yields stellar mass companions of 1.6 M⊙ for the 230 day period and 0.14 M⊙ for the 471 day period. However, the HIPPARCOS photometrie…