A Possible Period for the K-Band Brightening Episodes of GX 17+2 (2009)
Bornak, Jillian, McNamara, Bernard J., Harrison, Thomas E., Rupen, Michael, Bandyopadhyay, Reba M., Wachter, Stefanie
The low-mass X-ray binary and Z source GX 17+2 undergoes infrared K-band brightening episodes of at least 3.5 mag. The source of these episodes is not known. Prior published K-band magnitudes and new...
A Possible Period for the K-band Brightening Episodes of GX 17+2 (2009)
Bornak, Jillian, McNamara, Bernard J, Harrison, Thomas E, Rupen, Michael P, Bandyopadhyay, Reba M, Wachter, Stefanie
The low mass X-ray binary and Z source GX 17+2 undergoes infrared K-band brightening episodes of at least 3.5 magnitudes. The source of these episodes is not known. Prior published K-band magnitudes...
The complex, variable near infrared extinction towards the Nuclear Bulge (2009)
Gosling, Andrew J., Bandyopadhyay, Reba M., Blundell, Katherine M.
Using deep J, H and Ks-band observations, we have studied the near-infrared (nIR) extinction of the Nuclear Bulge (NB) and we find significant, complex variations on small physical scales. We have...
Mikles, Valerie J., Eikenberry, Stephen S., Bandyopadhyay, Reba M., Muno, Michael P.
We present X-ray and infrared observations of the X-ray source CXOGC J174536.1-285638. Previous observations suggest that this source may be an accreting binary with a high-mass donor (HMXB) or a...
On the Origin of the 511 keV Emission in the Galactic Centre (2008)
Bandyopadhyay, Reba M., Silk, Joseph, Taylor, James E., Maccarone, Thomas J.
Diffuse 511 keV line emission, from the annihilation of cold positrons, has been observed in the direction of the Galactic Centre for more than 30 years. The latest high-resolution maps of this...
Bandyopadhyay, Reba M., Gosling, Andrew J., Eikenberry, Stephen E., Muno, Michael P., Blundell, Katherine M., Podsiadlowski, Philipp, ...
I describe the IR and X-ray observational campaign we have undertaken for the purpose of determining the nature of the faint discrete X-ray source population discovered by Chandra in the Galactic...
Bandyopadhyay, Reba M., Gosling, Andrew J., Eikenberry, Stephen E., Muno, Michael P., Blundell, Katherine M., Podsiadlowski, Philipp, ...
I describe the IR and X-ray observational campaign we have undertaken for the purpose of determining the nature of the faint discrete X-ray source population discovered by Chandra in the Galactic...
Mikles, Valerie J., Eikenberry, Stephen S., Bandyopadhyay, Reba M., Muno, Michael P.
We present X-ray and infrared observations of the X-ray source CXOGC J174536.1-285638. Previous observations suggest that this source may be an accreting binary with a high-mass donor (HMXB) or a...
Counterparts to the Nuclear Bulge X-ray source population (2008)
Gosling, Andrew J., Bandyopadhyay, Reba M., Blundell, Katherine M., Lucas, Phil
We present an initial matching of the source positions of the Chandra Nuclear Bulge X-ray sources to the new UKIDSS-GPS near-infrared survey of the Nuclear Bulge. This task is made difficult by the...
The Nuclear Bulge extinction (2008)
Gosling, Andrew J., Blundell, Katherine M., Bandyopadhyay, Reba M., Lucas, Phil
We present a new, high resolution (5" per pixel) near-infrared extinction map of the Nuclear Bulge using data from the UKIDSS-GPS. Using photometry from the J, H and K-bands we show that the...
Bandyopadhyay, Reba M., Eikenberry, Stephen S., Dewitt, Curtis, Gosling, Andrew J., Muno, Michael P.
I describe the IR and X-ray campaign we have undertaken to determine the nature of the faint discrete X-ray source population discovered by Chandra in the Galactic Center. These results will provide...
Mikles, Valerie J., Eikenberry, Stephen S., Muno, Michael P., Bandyopadhyay, Reba M.
We present X-ray and infrared observations of the X-ray source CXOGC J174536.1-285638 (hereafter, Edd-1). The spectrum of the X-ray source has a very prominent Fe 6.7 keV emission feature and the...
FLAMINGOS-2: A Near-IR Multi-Object Spectrometer Ideal for Surveying the Galactic Center (2008)
Raines, S. Nicholas, Eikenberry, Stephen S., Bandyopadhyay, Reba M.
FLAMINGOS-2 (PI: S. Eikenberry) is a $5M facility-class near-infrared (1-2.5 micron) multi-object spectrometer and wide-field imager being built at the University of Florida for Gemini South. Here we...
Bandyopadhyay, Reba M., Eikenberry, Stephen S., Dewitt, Curtis, Gosling, Andrew J., Muno, Michael P.
I describe the IR and X-ray campaign we have undertaken to determine the nature of the faint discrete X-ray source population discovered by Chandra in the Galactic Center. These results will provide...
GRO J1744-28, search for the counterpart: infrared photometry and spectroscopy (2007)
Gosling, Andrew J., Bandyopadhyay, Reba M., Farrell, S. A.
Using VLT/ISAAC, we detected 2 candidate counterparts to the bursting pulsar GRO J1744-28, one bright and one faint, within the X-ray error circles of XMM-Newton and Chandra. In determining the...
Determining the nature of the faint X-ray source population near the Galactic Centre (2006)
Bandyopadhyay, Reba M., Gosling, Andrew J., Blundell, Katherine M., Podsiadlowski, Philipp, Eikenberry, Stephen E., Mikles, Valerie J., ...
We present results of a multi-wavelength program to study the faint discrete X-ray source population discovered by Chandra in the Galactic Centre (GC). From IR imaging obtained with the VLT we...
Galactic centre X-ray sources (2006)
Gosling, Andrew J., Bandyopadhyay, Reba M., Blundell, Katherine M.
We report on a campaign to identify the counterparts to the population of X-ray sources discovered at the centre of our Galaxy by Wang et al.(2002) using Chandra. We have used deep, near infrared...
Observation of X-ray variability in the BL Lac object 1ES1959+65 (2002)
Giebels, Berrie, Bloom, Elliott D., Focke, Warren, Godfrey, Gary, Madejski, Greg, Reilly, Kaice T., ...
This paper reports X-ray spectral observations of a relatively nearby z = 0.048 BL Lacertae (BL Lac) object 1ES1959+650, which is a potential TeV emitter. The observations include 31 short pointings...
Infrared Photometric Variability of GX13+1 and GX17+2 (2002)
Bandyopadhyay, Reba M., Charles, Philip A., Shahbaz, Tariq, Wagner, R. Mark
We present infrared photometry of the Galactic Bulge X-ray binary systems GX13+1 and GX17+2 obtained in 1997 July and August using OSIRIS on the 1.8m Perkins Telescope at Lowell Observatory. GX13+1...
Disk Diffusion Propagation Model for the Outburst of XTE J1118+480 (2001)
Wood, Kent S., Titarchuk, Lev, Ray, Paul S., Wolff, Michael T., Lovellette, Michael N., Bandyopadhyay, Reba M.
We present a linear diffusion model for the evolution of the double-peaked outburst in the transient source XTEJ1118+480. The model treats the two outbursts as episodic mass deposition at the outer...
On the Mass-Donating Star in GRS 1915+105 (2000)
Eikenberry, Stephen S., Bandyopadhyay, Reba M.
We present an analysis of constraints on the companion mass for the Galactic microquasar GRS 1915+105. Using the known inclination angle and stability of the jet axis, we can rule out massive ($M_s...