126 research outputs found
Gait Coordination of Hexapod Walking Robots Using Mutual-Coupled Immune Networks
PROCEEDINGS OF THE IEEE INTERNATIONAL CONFERENCE ON EVOLUTIONARY COMPUTATIO
Moderationism in the Immune System: Gait Acquisition of a Legged Robot Using the Metadynamics Function
The Complete Infrared View of Active Galactic Nuclei from the 70-month Swift/BAT Catalog
We systematically investigate the near- (NIR) to far-infrared (FIR)
photometric properties of a nearly complete sample of local active galactic
nuclei (AGN) detected in the Swift/Burst Alert Telescope (BAT) all-sky ultra
hard X-ray (14-195 keV) survey. Out of 606 non-blazar AGN in the Swift/BAT
70-month catalog at high galactic latitude of , we obtain IR
photometric data of 604 objects by cross-matching the AGN positions with
catalogs from the WISE, AKARI, IRAS, and Herschel infrared observatories. We
find a good correlation between the ultra-hard X-ray and mid-IR (MIR)
luminosities over five orders of magnitude (). Informed by previous measures of the intrinsic
spectral energy distribution of AGN, we find FIR pure-AGN candidates whose FIR
emission is thought to be AGN-dominated with low starformation activity. We
demonstrate that the dust covering factor decreases with the bolometric AGN
luminosity, confirming the luminosity-dependent unified scheme. We also show
that the completeness of the WISE color-color cut in selecting Swift/BAT AGN
increases strongly with 14-195 keV luminosity.Comment: 24 pages, 11 figures, accepted for publication in ApJ. The full list
of Table 1 is available at
http://www.kusastro.kyoto-u.ac.jp/~ichikawa/table1_MRT.tx
A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). II. Physical Properties derived from the SED Fitting with Optical, Infrared, and Radio Data
We present physical properties of radio galaxies (RGs) with 1 mJy discovered by Subaru Hyper Supreme-Cam (HSC) and VLA Faint Images of
the Radio Sky at Twenty-Centimeters (FIRST) survey. For 1056 FIRST RGs at with HSC counterparts in about 100 deg, we compiled
multi-wavelength data of optical, near-infrared (IR), mid-IR, far-IR, and radio
(150 MHz). We derived their color excess (), stellar mass, star
formation rate (SFR), IR luminosity, the ratio of IR and radio luminosity
(), and radio spectral index () that are
derived from the SED fitting with CIGALE. We also estimated Eddington ratio
based on stellar mass and integration of the best-fit SEDs of AGN component. We
found that , SFR, and IR luminosity clearly depend on redshift
while stellar mass, , and do not significantly
depend on redshift. Since optically-faint () RGs that are
newly discovered by our RG survey tend to be high redshift, they tend to not
only have a large dust extinction and low stellar mass but also have high SFR
and AGN luminosity, high IR luminosity, and high Eddington ratio compared to
optically-bright ones. The physical properties of a fraction of RGs in our
sample seem to differ from a classical view of RGs with massive stellar mass,
low SFR, and low Eddington ratio, demonstrating that our RG survey with HSC and
FIRST provides us curious RGs among entire RG population.Comment: 30 pages, 20 figures, and 4 tables, accepted for publication in ApJS.
The catalog and SED template of radio galaxies will be accessible through an
online servic
Huge right ventricle–right coronary artery fistula compromising right ventricular function in a patient with pulmonary atresia and intact ventricular septum: A case report
AbstractJ Thorac Cardiovasc Surg 2001;122:1030-
Discovery of Dying Active Galactic Nucleus in Arp 187: Experience of Drastic Luminosity Decline within years
Arp 187 is one of the fading active galactic nuclei (AGN), whose AGN activity
is currently decreasing in luminosity. We investigate the observational
signatures of AGN in Arp 187, which trace various physical scales from less
than 0.1 pc to the nearly 10 kpc, to estimate the longterm luminosity change
over years. The VLA 5 GHz, 8 GHz, and the ALMA 133 GHz images reveal
bimodal jet lobes with 5 kpc size and the absence of the central
radio-core. The 6dF optical spectrum shows that Arp 187 hosts narrow line
region with the estimated size of 1 kpc, and the line strengths give the
AGN luminosity of erg s. On the other
hand, the current AGN activity estimated from the AGN torus emission gives the
upper bound of erg s. The absence of
the radio-core gives the more strict upper bound of the current AGN luminosity
of erg s, suggesting that the central
engine is already quenched. These multi-wavelength signatures indicate that Arp
187 hosts a "dying" AGN: the central engine is already dead, but the large
scale AGN indicators are still observable as the remnant of the past AGN
activity. The central engine has experienced the drastic luminosity decline by
a factor of fainter within years, which is roughly
consistent with the viscous timescale of the inner part of the accretion disk
within 500 years.Comment: 15 pages, 8 figures, accepted for publication in Ap
Efficiency of leukocyte depletion filters and micro-aggregate filters following intra-operative cell salvage during cesarean delivery
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