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Infrared Studies of Molecular Shocks in the Supernova Remnant HB21: I. Thermal Admixture of Shocked H_2 Gas in the North
Jong-Ho Shinn, Bon-Chul Koo, Michael G. Burton +2
We present near- and mid-infrared observations on the shock-cloud interaction region in the northern part of the supernova remnant HB21, performed with the InfraRed Camera (IRC) ab…
Supernova Remnants in the AKARI IRC Survey of the Large Magellanic Cloud
Ji Yeon Seok, Bon-Chul Koo, Takashi Onaka +9
We present the near- to mid-infared study of supernova remnants (SNRs) using the AKARI IRC Survey of the Large Magellanic Cloud (LMC). The LMC survey observed about a 10 square deg…
Near-Infrared [Fe II] and H2 Line Observations of the Supernova Remnant 3C 396: Probing the Pre-supernova Circumstellar Materials
Ho-Gyu Lee, Dae-Sik Moon, Bon-Chul Koo +2
We present the results of near-infrared [Fe II] and H2 line imaging and spectroscopic observations of the supernova remnant 3C 396 using the Palomar 5 m Hale telescope. We detect l…
Dark Bursts in the Swift Era: The Palomar 60 inch-Swift Early Optical Afterglow Catalog
S. B. Cenko, J. Kelemen, F. A. Harrison +8
We present multi-color optical observations of long-duration gamma-ray bursts (GRBs) made over a three year period with the robotic Palomar 60 inch telescope (P60). Our sample cons…
Massive-Star Forming Infrared Loop around the Crab-like Supernova Remnant G54.1+0.3: Post Main-Sequence Triggered Star Formation?
Bon-Chul Koo, Christopher F. McKee, Jae-Joon Lee +6
We report the discovery of a star-forming loop around the young, Crab-like supernova remnant (SNR) G54.1+0.3 using the AKARI infrared satellite. The loop consists of at least eleve…
The Rich Mid-Infrared Environments of Two Highly-Obscured X-ray Binaries: Spitzer Observations of IGR J16318-4848 and GX 301-2
Dae-Sik Moon, David Kaplan, William Reach +3
We present the results of Spitzer mid-infrared spectroscopic observations of two highly-obscured massive X-ray binaries: IGR J16318-4848 and GX301-2. Our observations reveal for th…
A Near-Infrared Study of the Highly-Obscured Active Star-Forming Region W51B
Hyosun Kim, Yasushi Nakajima, Hwankyung Sung +2
We present wide-field JHKs-band photometric observations of the three compact HII regions G48.9-0.3, G49.0-0.3, and G49.2-0.3 in the active star-forming region W51B. The star clust…
AKARI Detection of the Infrared-Bright Supernova Remnant B0104-72.3 in the Small Magellanic Cloud
Bon-Chul Koo, Ho-Gyu Lee, Dae-Sik Moon +12
We present a serendipitous detection of the infrared-bright supernova remnant (SNR) B0104-72.3 in the Small Magellanic Cloud by the Infrared Camera (IRC) onboard AKARI. An elongate…
GRB 060505: A possible short-duration gamma-ray burst in a star forming region at redshift of 0.09
E. O. Ofek, S. B. Cenko, A. Gal-Yam +26
On 2006 May 5, a four second duration, low energy, ~10^49 erg, Gamma-Ray Burst (GRB) was observed, spatially associated with a z=0.0894 galaxy. Here, we report the discovery of the…
Preliminary Results from the Caltech Core-Collapse Project (CCCP)
Avishay Gal-Yam, S. B. Cenko, D. B. Fox +4
We present preliminary results from the Caltech Core-Collapse Project (CCCP), a large observational program focused on the study of core-collapse SNe. Uniform, high-quality NIR and…
[Fe II] and H2 filaments in the Supernova Remnant G11.2-0.3: Supernova Ejecta and Presupernova Circumstellar Wind
Bon-Chul Koo, Dae-Sik Moon, Ho-Gyu Lee +2
We present the results of near-infrared imaging and spectroscopic observations of the young, core-collapse supernova remnant (SNR) G11.2-0.3. In the [Fe II] 1.644 um image, we firs…
The Automated Palomar 60-Inch Telescope
S. Bradley Cenko, Derek B. Fox, Dae-Sik Moon +13
We have converted the Palomar 60-inch telescope (P60) from a classical night assistant-operated telescope to a fully robotic facility. The automated system, which has been operatio…
Multi-Wavelength Observations of GRB 050820A: An Exceptionally Energetic Event Followed from Start to Finish
S. B. Cenko, M. Kasliwal, F. A. Harrison +25
We present observations of the unusually bright and long gamma-ray burst GRB 050820A, one of the best-sampled broadband data sets in the Swift era. The gamma-ray light curve is mar…
On the progenitor of SN 2005gl and the nature of Type IIn supernovae
Avishay Gal-Yam, D. C. Leonard, D. B. Fox +8
We present a study of the type IIn supernova (SN) 2005gl, in the relatively nearby (d~66 Mpc) galaxy NGC 266. Photometry and spectroscopy of the SN indicate it is a typical member…
The afterglow of GRB050709 and the nature of the short-hard gamma-ray bursts
D. B. Fox, D. A. Frail, P. A. Price +33
The final chapter in the long-standing mystery of the gamma-ray bursts (GRBs) centres on the origin of the short-hard class, suspected on theoretical grounds to result from the coa…
Discovery and identification of the very high redshift afterglow of GRB 050904
J. Haislip, M. Nysewander, D. Reichart +39
In 2000, Lamb and Reichart predicted that gamma-ray bursts (GRBs) and their afterglows occur in sufficient numbers and at sufficient brightnesses at very high redshifts (z > 5) to…
The afterglow and elliptical host galaxy of the short gamma-ray burst GRB 050724
E. Berger, P. A. Price, S. B. Cenko +21
Despite a rich phenomenology, gamma-ray bursts (GRBs) are divided into two classes based on their duration and spectral hardness -- the long-soft and the short-hard bursts. The dis…
An HST Search for Supernovae Accompanying X-ray Flashes
A. M. Soderberg, S. R. Kulkarni, D. B. Fox +24
We present the results from an Hubble Space Telescope/ACS search for supernovae associated with X-ray flashes 020903, 040701, 040812 and 040916. We find strong evidence that XRF 02…
The Discovery of the Optical and Near-IR Afterglows of the First Swift Gamma-Ray Bursts
E. Berger, D. B. Fox, S. R. Kulkarni +16
We present optical and near-infrared searches for afterglow emission from the first four Swift bursts with accurate positions from the X-ray Telescope (XRT). Using telescopes at La…
Photometric Typing Analyses of Three Young Supernovae with the Robotic Palomar 60-Inch Telescope
Anne M. Rajala, Derek B. Fox, Avishay Gal-Yam +6
We present photometric typing analyses of three young supernovae observed with the Robotic 60-inch Telescope at Palomar Observatory (P60). This represents the first time that such…
The Caltech Core-Collapse Project (CCCP)
A. Gal-Yam, S. B. Cenko, D. W. Fox +4
The cosmological utility of type Ia Supernovae (SNe) prompted numerous studies of these events, and they are now well characterized observationally, both as individual objects and…
The Evolution Of LMC X-4 Flares: Evidence For Super-Eddington Radiation Oozing Through Inhomogeneous Polar Cap Accretion Flows ?
Dae-Sik Moon, Stephen S. Eikenberry, Ira M. Wasserman
We present the results of two extensive Rossi X-ray Timing Explorer observations of large X-ray flaring episodes from the high-mass X-ray binary pulsar LMC X-4. Light curves during…
SMC X-1 As An Intermediate-Stage Flaring X-ray Pulsar
Dae-Sik Moon, Stephen S. Eikenberry, Ira M. Wasserman
We present Rossi X-ray Timing Explorer observations of the X-ray pulsar SMC X-1. The source is highly variable on short time scales (< 1 h), exhibiting apparent X-ray flares occupy…
Discovery of Coupling between Periodic and Aperiodic Variability and X-ray Quasi-periodic Oscillations from Her X-1
Dae-Sik Moon, Stephen S. Eikenberry
We report the discovery of coupling between periodic and aperiodic variability and ~12-mHz X-ray quasi-periodic oscillations (QPOs) from the X-ray binary pulsar Her X-1 using data…