Suzaku Observations of Local Ultraluminous Infrared Galaxies (2008)
Teng, Stacy H., Veilleux, Sylvain, Anabuki, Naohisa, Dermer, Charles D., Gallo, Luigi C., Nakagawa, Takao, ...
We report the results from our analysis of {\it Suzaku} XIS (0.5-10 keV) and HXD/PIN (15-40 keV) observations of five well-known local ULIRGs: {\em IRAS} F05189-2524, {\em IRAS} F08572+3915, Mrk 273,...
Molecular Hydrogen and Paschen-alpha Emission in Cooling Flow Galaxies (2007)
Heino Falcke, M. J. Rieke, G. H. Rieke, Chris Simpson, Andrew S. Wilson
We present near-infrared spectra obtained to search for Paff and molecular hydrogen lines in edge-darkened (FR I-type) radio galaxies with bright Hff emission in the redshift range 0:0535! z! 0:15....
Neil M. Nagar, Heino Falcke, Andrew S. Wilson, Luis C. Ho
We report a high resolution (0: 00 2), 15 GHz survey of a sample of 48 low-luminosity active galactic nuclei with the Very Large Array 1 . Compact radio emission has been detected above a flux...
HST and VLA Observations of the H2O Gigamaser Galaxy TXS2226-184 (2007)
Heino Falcke, Andrew S. Wilson, Christian Henkel, Andreas Brunthaler, James A. Braatz
We present HST/WFPC2 images in Hff+[N II]6548,6583 lines and continuum radiation and a VLA map at 8 GHz of the H 2 O gigamaser galaxy TXS2226-184. This galaxy has the most luminous H 2 O maser...
Helical Strands in the Jet-like Narrow Line Region of ESO 428-G14 (2007)
Heino Falcke, Andrew S. Wilson, Chris Simpson, Gary A. Bower
We present HST/WFPC2 images of the narrow line region (NLR) of the Seyfert 2 galaxy ESO 428-G14 (0714-2914, M4-1). The NLR consists of many individual, thin strands, which are very closely related to...
The extended emission line region of the Seyfert galaxy Markarian 573 (2007)
Pierre Ferruit, Andrew S. Wilson, Heino Falcke, Chris Simpson, Florence Durret
We present the results of observations of the extended emission-line region of the Seyfert 2 galaxy Mrk 573, obtained using the WFPC2 camera on board HST and the TIGER integral field spectrograph on...
S. Collin, F. Combes, I. Shlosman, Heino Falcke, Nicola Bennert, Hartmut Schulz, ...
Abstract. We have observed the [OIII] 5007 line emission of seven PG quasars with the Hubble Space Telescope using linear-ramp lters. Two quasars show compact lamentary structures which may be...
Neil M. Nagar, Heino Falcke, Andrew S. Wilson, James S. Ulvestad
III. \AGNs " in a Distance-Limited Sample of \LLAGNs"
Andrew Wilson Heino, Neil M. Nagar, Andrew S. Wilson, Heino Falcke
We present simultaneous, sub-arcsecond ( 50 pc) resolution 5 GHz, 8.4 GHz, and 15 GHz VLA observations of a well-de ned sample of sixteen low-luminosity active galactic nuclei (LLAGNs). The radio...
Stable isotope and DNA evidence for ritual sequences in Inca child sacrifice (2007)
Wilson, Andrew S., Taylor, Timothy, Ceruti, Maria Constanza, Chavez, Jose Antonio, Reinhard, Johan, Grimes, Vaughan, ...
Stable isotope and DNA evidence for ritual sequences in Inca child sacrifice. (2007)
Wilson, Andrew S., Ceruti, M.C., Chavez, J.A., Taylor, Timothy F., Stern, Ben
No
Stable isotope and DNA evidence for ritual sequences in Inca child sacrifice. (2007)
Wilson, Andrew S., Ceruti, M.C., Chavez, J.A., Taylor, Timothy F, Stern, Ben
No
Wilson, Andrew S., Janaway, Robert C., Holland, A.D., Dodson, Hilary I., Baran, Eve, Pollard, M., ...
No
Terashima, Yuichi, Inoue, Hirohiko, Wilson, Andrew S.
We present the results of a search for optical identifications of ultraluminous X-ray sources (ULXs) in M51 by using mosaic images taken with the Hubble Space Telescope Advanced Camera for Surveys in...
Histological correlates of post mortem mitochondrial DNA damage in degraded hair (2006)
Gilbert, M. Thomas P., Janaway, Robert C., Tobin, Desmod J., Cooper, Alan, Wilson, Andrew S.
We have assessed the histological preservation of naturally degraded human hair shafts, and then assayed each for levels of amplifiable mitochondrial DNA and damage-associated DNA miscoding lesions....
Histological correlates of post mortem mitochondrial DNA damage in degraded hair (2006)
Gilbert, M. Thomas P., Janaway, Robert C., Tobin, Desmod J., Cooper, Alan, Wilson, Andrew S.
We have assessed the histological preservation of naturally degraded human hair shafts, and then assayed each for levels of amplifiable mitochondrial DNA and damage-associated DNA miscoding lesions....
Histological correlates of postmortem DNA damage in degraded hair (2006)
Janaway, Robert C., Cooper, A., Gilbert, M.T.P., Tobin, Desmond J., Wilson, Andrew S.
No
Radiatively Inefficient Accretion Flow in the Nucleus of NGC 1097 (2005)
Nemmen, Rodrigo S., Storchi-Bergmann, Thaisa, Yuan, Feng, Eracleous, Michael, Terashima, Yuichi, Wilson, Andrew S.
We present a model for the accretion flow around the supermassive black hole in the LINER nucleus of NGC 1097 which fits the optical to X-ray spectral energy distribution (SED). The X-ray segment of...
The X-ray Emissions from the M87 Jet: Diagnostics and Physical Interpretation (2005)
Perlman, Eric S., Wilson, Andrew S.
We reanalyze the deep Chandra observations of the M87 jet, first examined by Wilson & Yang (2002). By employing an analysis chain that includes image deconvolution, knots HST-1 and I are fully...
Nagar, Neil M., Falcke, Heino, Wilson, Andrew S.
We present the completed results of a high resolution radio imaging survey of all (~200) low-luminosity active galactic nuclei (LLAGNs) and AGNs in the Palomar Spectroscopic Sample. The high...
Maoz, Dan, Nagar, Neil M., Falcke, Heino, Wilson, Andrew S.
LINER nuclei, which are present in many nearby galactic bulges, may be the manifestation of low-rate or low-radiative-efficiency accretion onto supermassive central black holes. However, it has been...
The halo, hot spots, and jet/cloud interaction of PKS 2153-69 (2005)
Young, A. Joyce, Wilson, Andrew S., Tingay, Steven J., Heinz, Sebastian
No abstract available.
The halo, hot spots, and jet/cloud interaction of PKS 2153-69 (2005)
Young, A. Joyce, Wilson, Andrew S., Tingay, Steven J., Heinz, Sebastian
No abstract available.
The halo, hot spots, and jet/cloud interaction of PKS 2153-69 (2005)
Young, A. Joyce, Wilson, Andrew S., Tingay, Steven J., Heinz, Sebastian
No abstract available.
The halo, hot spots, and jet/cloud interaction of PKS 2153-69 (2005)
Young, A. Joyce, Wilson, Andrew S., Tingay, Steven J., Heinz, Sebastian
No abstract available.
A Near-Infrared Imaging Study of Seyfert Galaxies with Extended Emission line Regions (2004)
Alonso-Herrero, Almudena, Simpson, Chris, Ward, Martin J., Wilson, Andrew S.
We present a near-infrared J,H,K and L' band (1.25 - 3.80 mue) imaging study of a sample of Seyfert galaxies, including some of the best studied examples of these with extended emission line regions...
Comparing AGN broad- and narrow-line regions (2004)
Bennert, Nicola, Falcke, Heino, Shchekinov, Yuri, Wilson, Andrew S.
We compare recent HST observations of Seyfert and quasar NLRs and find that type-2 AGNs follow a relation consistent with that expected for a distribution of gas ionized by a central source R(NLR,2)...
Ancient mitochondrial DNA from hair (2004)
Gilbert, M. Thomas, Wilson, Andrew S., Bunce, Michael, Hansen, Anders J., Willerslev, Eske, Shapiro, Beth, ...
Ancient mitochondrial DNA from hair. (2004)
Gilbert, M.T.P., Wilson, Andrew S., Bunce, M., Hansen, A.J., Janaway, Robert C., Willerslev, E., ...
No
Nagar, Neil M., Wilson, Andrew S., Falcke, Heino, Veilleux, Sylvain, Maiolino, Roberto
This paper presents the results of a high resolution radio imaging survey of 83 of the 118 ultraluminous infrared galaxies (ULIRGs) in the IRAS 1 Jy ULIRG sample. We have observed these ULIRGs at...
The Luminous X-ray Source Population in M51 Observed with Chandra (2003)
Terashima, Yuichi, Wilson, Andrew S.
We present the results of two Chandra observations (separated by 1 year) of the population of X-ray sources in the spiral galaxy M51 (NGC 5194 and NGC 5195). 113 X-ray sources have been detected in...
A Chandra X-ray Study of NGC 1068: II. The Luminous X-ray Source Population (2003)
Smith, David A., Wilson, Andrew S.
We present an analysis of the compact X-ray source population in the Seyfert~2 galaxy NGC 1068, imaged with Chandra. We find a total of 84 compact sources, of which 66 are projected onto the galactic...
X-ray Emission Processes in Extragalactic Jets, Lobes and Hot Spots (2003)
This paper is a brief review of the processes responsible for X-ray emission from radio jets, lobes and hot spots. Possible photons in inverse Compton scattering models include the radio synchrotron...
Low-luminosity black holes: The case of M87 (2003)
Di Matteo, Tiziana, Allen, Steven W., Fabian, Andrew C., Wilson, Andrew S., Young, Andrew J.
X-ray Emission Diagnostics from the M87 Jet (2002)
Perlman, Eric S., Wilson, Andrew S.
We use Chandra, HST and VLA observations of M87 to investigate the physics of X-ray emission from AGN jets. We find that X-ray hotspots in the M87 jet occur primarily in regions with hard...
On the influence of radio galaxies on cooling flows: M87 and Cygnus A (2002)
Wilson, Andrew S., Young, Andrew J., Smith, David A.
Results from Chandra studies of the intracluster medium around M87 and Cygnus A are summarized.
Chandra Snapshot Observations of Low-Luminosity AGNs with a Compact Radio Source (2002)
Terashima, Yuichi, Wilson, Andrew S.
The results of Chandra snapshot observations of 11 LINERs (Low-Ionization Nuclear Emission-line Regions), three low-luminosity Seyfert galaxies, and one HII-LINER transition object are presented. Our...
Size and Structure of the Narrow-Line Region of Quasars (2002)
Bennert, Nicola, Falcke, Heino, Schulz, Hartmut, Wilson, Andrew S., Wills, Beverley J.
We have observed the narrow-line regions (NLRs) of the seven brightest radio-quiet PG (or BQS) quasars (z < 0.5) with the Wide Field and Planetary Camera 2 on board the Hubble Space Telescope (HST)....
Chandra Snapshot Observations of LINERs with a Compact Radio Core (2002)
Terashima, Yuichi, Wilson, Andrew S.
The results of Chandra snapshot observations of 11 LINERs (Low-Ionization Nuclear Emission-line Regions), three low-luminosity Seyfert galaxies, and one HII-LINER transition object are presented. Our...
X-ray Emission from the Type Ic Supernova 1994I Observed with Chandra (2002)
Immler, Stefan, Wilson, Andrew S., Terashima, Yuichi
We present two high-resolution Chandra X-ray observations of supernova (SN) 1994I which show, for the first time, that the interaction of the blast wave from a Type Ic SN with its surrounding...
Ultraluminous X-ray Sources in M51 (2002)
Terashima, Yuichi, Wilson, Andrew S.
We present the results of Chandra observations of off-nuclear X-ray sources in the spiral galaxy M51 (NGC 5194). 113 X-ray sources have been detected in the field of view and 84 among them project...
Accretion onto the Supermassive Black Hole in M87 (2002)
Di Matteo, Tiziana, Allen, Steven W., Fabian, Andrew C., Wilson, Andrew S., Young, Andrew J.
Chandra X-ray observations of the giant elliptical galaxy M87 resolve the thermal state of the hot interstellar medium into the accretion (Bondi) radius of its central 3 10^9 Msun black hole. We...
Gigahertz-Peaked Spectrum Radio Sources in Nearby Galaxies (2002)
Neil M. Nagar, Andrew S. Wilson, Heino Falcke, James S. Ulvestad, Carole G. Mundell
There is now strong evidence that many LLAGNs contain accreting massive black holes and that the nuclear radio emission is dominated by parsec-scale jets launched by these black holes. Here, we...
Cecil, Gerald, Dopita, Michael A., Groves, Brent, Wilson, Andrew S., Ferruit, Pierre, Pécontal, Emmanuel, ...
Using the HST STIS spectrograph we have obtained a grid of [O III] and H-beta emission-line spectra at 0"05x0"19 and 60 km/s (FWHM) resolution that covers much of the NLR of NGC 1068. We find...
A Chandra X-ray Study of Cygnus A - II. The Nucleus (2001)
Young, Andrew J., Wilson, Andrew S., Terashima, Yuichi, Arnaud, Keith A., Smith, David A.
We report Chandra ACIS and quasi-simultaneous RXTE observations of the nearby, powerful radio galaxy Cygnus A, with the present paper focusing on the properties of the active nucleus. In the Chandra...
A Chandra X-ray Study of Cygnus A - III. The Cluster of Galaxies (2001)
Smith, David A., Wilson, Andrew S., Arnaud, Keith A., Terashima, Yuichi, Young, Andrew J.
The results from a recent Chandra ACIS-S study of the cluster surrounding Cygnus A are presented. We have deprojected the X-ray spectra taken from various elliptical shells in order to derive the run...
Nagar, Neil M., Wilson, Andrew S., Falcke, Heino
We present simultaneous, sub-arcsecond (
A Chandra Observation of the Circinus Galaxy (2001)
Smith, David A., Wilson, Andrew S.
We report on a recent Chandra ACIS-S observation of the Circinus galaxy. These observations confirm that the nuclear spectrum results from reflection of a hard X-ray continuum by ``neutral'' matter....
Host galaxies and nuclear structure of AGN with H_2O megamasers as seen with HST (2001)
Falcke, Heino, Henkel, Christian, Wilson, Andrew S., Braatz, James A.
We present results of an HST survey in Halpha and continuum filters of a sample of H_2O megamaser galaxies compiled by Braatz et al., all of which contain AGN. These observations allow us to study...
A Chandra Observation of M51: Active Nucleus and Nuclear Outflows (2001)
Terashima, Yuichi, Wilson, Andrew S.
We present a Chandra ACIS-S observation of the nuclear region of the nearby spiral galaxy M51 (NGC 5194), which has a low-luminosity Seyfert 2 nucleus. The X-ray image shows the nucleus, southern...
Host Galaxies and Nuclear Structure of AGN with H2O Megamasers as Seen with HST (2001)
Heino Falcke, Christian Henkel, Andrew S. Wilson, James A. Braatz
We present results of an HST survey in H and continuum lters of a sample of H2O megamaser galaxies compiled by Braatz et al., all of which contain AGN. These observations allow us to study the...
Size And Structure Of The Narrow-Line Region Of Quasars (2001)
Nicola Bennert, Heino Falcke, Hartmut Schulz, Andrew S. Wilson, Beverley J. Wills
We have observed the narrow{line regions (NLRs) of the seven brightest radio{quiet PG (or BQS) quasars (z < 0.5) with the Wide Field Planetary Camera 2 on board the Hubble Space Telescope (HST)....
Radio-Variability in Radio-Quiet Quasars and Low-Luminosity AGN (2000)
Falcke, Heino, Lehar, Joseph, Barvainis, Richard, Nagar, Neil M., Wilson, Andrew S.
We report on two surveys of radio-weak AGN to look for radio variability. We find significant variability with an RMS of 10-20% on a timescale of months in radio-quiet and radio-intermediate quasars....
Nagar, Neil M., Falcke, Heino, Wilson, Andrew S., Ho, Luis C.
We report a 0.2" resolution, 15 GHz survey of a sample of 48 low-luminosity active galactic nuclei with the Very Large Array. Compact radio emission has been detected in 57% (17 of 30) of LINERs and...
Falcke, Heino, Nagar, Neil M., Wilson, Andrew S., Ulvestad, James S.
We have used the VLBA at 5 GHz to observe all galaxies with nuclear radio flux densities above 3.5 mJy found in a VLA survey at 15 GHz of a sample of nearby LINER galaxies. All galaxies were detected...
Extended Gas in Seyfert Galaxies: Near-Infrared Observations of 15 Active Nuclei (2000)
Winge, Claudia, Storchi-Bergmann, Thaisa, Ward, Martin J., Wilson, Andrew S.
Results from an analysis of low resolution (R~250) near-IR long-slit spectra covering simultaneously the I, J, H, and K bands, for a sample of 15 Seyfert galaxies and the N5253 starburst nucleus, are...
Heino Falcke, Neil M. Nagar, Andrew S. Wilson, James S. Ulvestad
We have used the VLBA at 5 GHz to observe all galaxies with nuclear radio ux densities above 3.5 mJy found in a VLA survey at 15 GHz of a sample of nearby LINER galaxies. All galaxies were detected...
Radio-Variability in Radio-Quiet Quasars and Low-Luminosity AGN (2000)
Heino Falcke, Richard Barvainis, Neil M. Nagar, Andrew S. Wilson
. We report on two surveys of radio-weak AGN to look for radio variability. We nd signicant variability with an RMS of 10-20% on a timescale of months in radio-quiet and radio-intermediate quasars....
HST and VLA Observations of the H2O Gigamaser Galaxy TXS2226-184 (1999)
Falcke, Heino, Wilson, Andrew S., Henkel, Christian, Brunthaler, Andreas, Braatz, James A.
We present HST/WFPC2 images in Halpha+[NII]6548,6583 lines and continuum radiation and a VLA map at 8 GHz of the H2O gigamaser galaxy TXS2226-184. This galaxy has the most luminous H2O maser emission...
Nagar, Neil M., Wilson, Andrew S., Mulchaey, John S., Gallimore, Jack F.
The VLA has been used at 3.6 and 20 cm to image a sample of about 50 early-type Seyfert galaxies with recessional velocities less than 7,000 km/s and total visual magnitude less than 14.5. The...
The Relative Orientation of Nuclear Accretion and Galaxy Stellar Disks in Seyfert Galaxies (1999)
Nagar, Neil M., Wilson, Andrew S.
We use the difference (delta) between the position angles of the nuclear radio emission and the host galaxy major axis to investigate the distribution of the angle (beta) between the axes of the...
Collaborative Instructional Development Environment: A Stage for the AIDA. (1998)
Main, Robert G., Wilson, Andrew S.
Computer-based media production tools have matured sufficiently to enable the Air Force to readily provide very powerful curriculum development tools based on the existing Desktop III or IV. However,...
VLA and VLBA observations of compact radio cores in LINER galaxies (1998)
Falcke, Heino, Ho, Luis C., Ulvestad, James S., Wilson, Andrew S., Nagar, Neil M.
A VLA survey of nearby LINER galaxies at 15 GHz has revealed the presence of a compact radio core in many sources. The cores seem to be correlated with the optical activity. Follow-up VLBA...
NGC 7582: The Prototype Narrow-Line X-ray Galaxy (1998)
Schachter, Jonathan F., Fiore, Fabrizio, Elvis, Martin, Mathur, Smita, Wilson, Andrew S., Morse, Jon A., ...
NGC 7582 is a candidate prototype of the Narrow Line X-ray Galaxies (NLXGs) found in deep X-ray surveys. An ASCA observation shows the hard (> 3 keV) X-ray continuum of NGC 7582 drops 40% in ~6 ks,...
Falcke, Heino, Wilson, Andrew S., Simpson, Chris
We present HST/WFPC2 images, in narrow-band filters containing the [OIII] lambda5007 and Halpha+[NII] emission-lines and their adjacent continua, of a sample of seven Seyfert 2 galaxies selected on...
Heino Falcke, Andrew S. Wilson, Chris Simpson
We present HST/WFPC2 images, in narrow-band filters containing the [O III] 5007 and Hff+[N II] emissionlines and their adjacent continua, of a sample of seven Seyfert 2 galaxies selected on the basis...
VLA and VLBA observations of compact radio cores in LINER galaxies (1998)
Heino Falcke, Luis Ho, James S. Ulvestad, Andrew S. Wilson, Neil M. Nagar
. A VLA survey of nearby LINER galaxies at 15 GHz has revealed the presence of a compact radio core in many sources. The cores seem to be correlated with the optical activity. Follow-up VLBA...
Molecular Hydrogen and Paschen-alpha Emission in Cooling Flow Galaxies (1997)
Falcke, Heino, Rieke, M. J., Rieke, G. H., Simpson, Chris, Wilson, Andrew S.
We present near-infrared spectra obtained to search for Pa-alpha and molecular hydrogen lines in edge-darkened (FR I-type) radio galaxies with bright Halpha emission in the redshift range 0.0535
The Nuclear Ionized Gas in the Radio Galaxy M84 (NGC 4374) (1997)
Bower, Gary A., Heckman, Timothy M., Wilson, Andrew S., Richstone, Douglas O.
We present optical images of the nucleus of the nearby radio galaxy M84 (NGC 4374 = 3C272.1) obtained with the Wide Field/Planetary Camera 2 (WFPC2) aboard the Hubble Space Telescope (HST). Our three...
Wilson, Andrew S., Walsh, William J.
This report summarizes activities conducted during early phases of a research project to evaluate use of the Integrated Maintenance Information System (IMIS) in aircraft maintenance training....
Relativistic Jets in Radio-Weak Quasars and LINER Galaxies (1997)
Heino Falcke, Andrew S. Wilson, Luis C. Ho
: We discuss radio observations of a sample of radio-weak and radio-intermediate quasars which demonstrate that -- just like their radio-loud counterparts -- radioweak quasars too have relativistic...
Helical Strands in the Jet-like Narrow Line Region of ESO 428-G14 (1996)
Falcke, Heino, Wilson, Andrew S., Simpson, Chris, Bower, Gary A.
We present HST/WFPC2 images of the narrow line region (NLR) of the Seyfert 2 galaxy ESO 428-G14 (0714-2914, M4-1). The NLR consists of many individual, thin strands, which are very closely related to...
The Difference between Radio-Loud and Radio-Quiet Active Galaxies (1994)
Wilson, Andrew S., Colbert, Edward J. M.
The recent development of unified theories of active galactic nuclei (AGN) has indicated that there are two physically distinct classes of these objects - radio-loud and radio-quiet. The primary...
The Radio Emission from the Ultra-Luminous Far-Infrared Galaxy NGC 6240 (1994)
Colbert, Edward J. M., Wilson, Andrew S., Bland-Hawthorn, Jonathan
We present new radio observations of the ``prototypical'' ultra-luminous far- infrared galaxy NGC~6240, obtained using the VLA at 20~cm in `B' configuration and at 3.6~cm in `A' configuration. These...
Studies on the phrenic nerve and diaphragmatic plexus in rabbits and gerbils
Mitchell, Robert, Wilson, Andrew S.
Studies on nerve fibres within the phrenic nerve and in the diaphragmatic plexus were carried out in one species, the gerbil, a small desert rodent. The resistance of this small mammal to surgical...
Stable isotope and DNA evidence for ritual sequences in Inca child sacrifice
Wilson, Andrew S., Taylor, Timothy, Ceruti, Maria Constanza, Chavez, Jose Antonio, Reinhard, Johan, Grimes, Vaughan, ...
Four recently discovered frozen child mummies from two of the highest peaks in the south central Andes now yield tantalizing evidence of the preparatory stages leading to Inca ritual killing as...