An Unusually Fast-Evolving Supernova (2009)
Poznanski, Dovi, Chornock, Ryan, Nugent, Peter E., Bloom, Joshua S., Ganeshalingam, Mohan, Leonard, Douglas C., ...
Analyses of supernovae (SNe) have revealed two main types of progenitors: exploding white dwarfs and collapsing massive stars. We present SN2002bj, which stands out as different from any SN reported...
The Cosmic Rate, Luminosity Function and Intrinsic Correlations of Long GRBs (2009)
Butler, Nathaniel R., Bloom, Joshua S., Poznanski, Dovi
We calculate durations and spectral parameters for 207 Swift bursts detected by the BAT instrument from April 2007 to August 2009, including 67 events with measured redshifts. This is the first...
GRB 090426: The Environment of a Rest-Frame 0.35-second Gamma-Ray Burst at Redshift z=2.609 (2009)
Levesque, Emily M., Bloom, Joshua S., Butler, Nathaniel R., Perley, Daniel A., Cenko, S. Bradley, Prochaska, J. Xavier, ...
We present the discovery of an absorption-line redshift of z = 2.609 for GRB 090426, establishing the first firm lower limit to a redshift for a gamma-ray burst with an observed duration of 90%...
Exploring the Optical Transient Sky with the Palomar Transient Factory (2009)
Rau, Arne, Kulkarni, Shrinivas R., Law, Nicholas M., Bloom, Joshua S., Ciardi, David, Djorgovski, George S., ...
The Palomar Transient Factory (PTF) is a wide-field experiment designed to investigate the optical transient and variable sky on time scales from minutes to years. PTF uses the CFH12k mosaic camera,...
The Synoptic All-Sky Infrared (SASIR) Survey (2009)
Bloom, Joshua S., Prochaska, J. Xavier, Lee, William, González, J. Jesús, Ramírez-Ruiz, Enrico, Bolte, Michael, ...
We are proposing to conduct a multicolor, synoptic infrared (IR) imaging survey of the Northern sky with a new, dedicated 6.5-meter telescope at San Pedro M\'artir (SPM) Observatory. This initiative...
Training the Next Generation of Astronomers (2009)
Williams, Peter K. G., Huff, Eric, Maness, Holly, Modjaz, Maryam, Shapiro, Kristen L., Silverman, Jeffrey M., ...
While both society and astronomy have evolved greatly over the past fifty years, the academic institutions and incentives that shape our field have remained largely stagnant. As a result, the...
Type II Supernovae as Probes of Cosmology (2009)
Poznanski, Dovi, Baron, Eddie, Blondin, Stephane, Bloom, Joshua S., D'Andrea, Christopher B., Della Valle, Massimo, ...
- Constraining the cosmological parameters and understanding Dark Energy have tremendous implications for the nature of the Universe and its physical laws. - The pervasive limit of systematic...
Bloom, Joshua S., Holz, Daniel E., Hughes, Scott A., Menou, Kristen, Adams, Allan, Anderson, Scott F., ...
It is widely expected that the coming decade will witness the first direct detection of gravitational waves (GWs). The ground-based LIGO and Virgo GW observatories are being upgraded to advanced...
Improved Standardization of Type II-P Supernovae: Application to an Expanded Sample (2008)
Poznanski, Dovi, Butler, Nathaniel, Filippenko, Alexei V., Ganeshalingam, Mohan, Li, Weidong, Bloom, Joshua S., ...
In the epoch of precise and accurate cosmology, cross-confirmation using a variety of cosmographic methods is paramount to circumvent systematic uncertainties. Owing to progenitor histories and...
The Rate of Type Ia Supernovae at z~0.2 from SDSS-I Overlapping Fields (2008)
Horesh, Assaf, Poznanski, Dovi, Ofek, Eran O., Maoz, Dan
In the course of the Sloan Digital Sky Survey (SDSS-I), a large fraction of the surveyed area was observed more than once due to field tiling overlap, usually at different epochs. We utilize some of...
Bayesian single-epoch photometric classification of supernovae (2007)
Poznanski, Dovi, Maoz, Dan, Gal-Yam, Avishay
Ongoing supernova (SN) surveys find hundreds of candidates that require confirmation for their various uses. Traditional classification based on follow- up spectroscopy of all candidates is virtually...
Supernovae in the Subaru Deep Field: An Initial Sample, and Type Ia Rate, out to Redshift 1.6 (2007)
Poznanski, Dovi, Maoz, Dan, Yasuda, Naoki, Foley, Ryan J., Doi, Mamoru, Filippenko, Alexei V., ...
Large samples of high-redshift supernovae (SNe) are potentially powerful probes of cosmic star formation, metal enrichment, and SN physics. We present initial results from a new deep SN survey, based...
Bayesian Single-Epoch Photometric Classification of Supernovae (2006)
Poznanski, Dovi, Maoz, Dan, Gal-Yam, Avishay
(abridged) Ongoing supernova (SN) surveys find hundreds of candidates, that require confirmation for their use. Traditional classification based on followup spectroscopy of all candidates is...
Gal-Yam, Avishay, Ofek, Eran O., Poznanski, Dovi, Levinson, Amir, Waxman, Eli, Frail, Dale A., ...
We had previously reported on a survey for radio transients, used to set an upper limit on the number of orphan gamma-ray burst (GRB) radio afterglows, and thus a lower limit on the typical GRB...
Photometric Identification of Young Stripped-Core Supernovae (2004)
Gal-Yam, Avishay, Poznanski, Dovi, Maoz, Dan, Filippenko, Alexei V., Foley, Ryan J.
We present a method designed to identify the spectral type of young (less than ~30 days after explosion) and nearby (z < ~0.05) supernovae (SNe) using their broad-band colors. In particular, we show...
Using Multi-Band Photometry to Classify Supernovae (2003)
Poznanski, Dovi, Gal-Yam, Avishay, Maoz, Dan, Filippenko, Alexei V., Leonard, Douglas C., Matheson, Thomas
Large numbers of supernovae (SNe) have been discovered in recent years, and many more will be found in the near future. Once discovered, further study of a SN and its possible use as an astronomical...
Not Color Blind: Using Multiband Photometry to Classify Supernovae (2002)
Poznanski, Dovi, Gal-Yam, Avishay, Maoz, Dan, Filippenko, Alexei V., Leonard, Douglas C., Matheson, Thomas
Large numbers of supernovae (SNe) have been discovered in recent years, and many more will be found in the near future. Once discovered, further study of a SN and its possible use as an astronomical...