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25 papers · 2 filters
Chandra counterparts of CANDELS GOODS-S sources
N. Cappelluti, A. Comastri, A. Fontana +18
Improving the capabilities of detecting faint X-ray sources is fundamental to increase the statistics on faint high-z AGN and star-forming galaxies. We performed a simultaneous Max…
PS1-10jh Continues to Follow the Fallback Accretion Rate of a Tidally Disrupted Star
S. Gezari, R. Chornock, A. Lawrence +5
We present late-time observations of the tidal disruption event candidate PS1-10jh. UV and optical imaging with HST/WFC3 localize the transient to be coincident with the host galax…
Discovery of polarized line emission in SN1006
W. B. Sparks, J. E. Pringle, R. F. Carswell +2
Laming (1990) predicted that the narrow Balmer line core of the ~3000 km/s shock in the SN 1006 remnant would be significantly polarized due to electron and proton impact polarizat…
High Metallicity LGRB Hosts
J. F. Graham, A. S. Fruchter, E. M. Levesque +9
We present our imaging and spectroscopic observations of the host galaxies of two dark long bursts with anomalously high metallicities, LGRB 051022 and LGRB 020819B, which in conju…
The Relative Rate of LGRB Formation as a Function of Metallicity
J. F. Graham, A. S. Fruchter
There is now strong evidence that Long-duration Gamma-Ray Bursts (LGRBs) are preferentially formed in low-metallicity environments. However, the magnitude of this effect, and its f…
Wide-Band, Low-Frequency Pulse Profiles of 100 Radio Pulsars with LOFAR
M. Pilia, J. W. T. Hessels, B. W. Stappers +84
LOFAR offers the unique capability of observing pulsars across the 10-240 MHz frequency range with a fractional bandwidth of roughly 50%. This spectral range is well-suited for stu…