David J. Helfand (Columbia)

Identifiers

• name variant David J. Helfand (Columbia) 0.60 · backfill

Papers (5)

1. Radio-Selected Quasars in the Sloan Digital Sky Survey astro-ph.CO · 2009 · author #2
2. Weak Lensing by Large-Scale Structure with the FIRST Radio Survey astro-ph · 2004 · author #3
3. The Hard X-ray Luminosity of OB Star Populations: Implications for the Contribution of Star Formation to the Cosmic X-ray Background astro-ph · 2001 · author #1
4. The FIRST Radio-Loud Broad Absorption Line QSO and Evidence for a Hidden Population of Quasars astro-ph · 1997 · author #6
5. The FIRST Bright QSO Survey astro-ph · 1996 · author #4

Mentions

• 0909.4091 #2 · backfill · confidence 0.70 David J. Helfand (Columbia)

Frequent Coauthors

• Richard L. White (STScI) 3 shared papers
• Michael D. Gregg (IGPP/LLNL) 2 shared papers
• Richard G. McMahon (Cambridge) 2 shared papers
• Robert H. Becker (UC Davis) 2 shared papers
• Alexandre Refregier (CEA/Saclay) 1 shared papers
• Edward C. Moran (Berkeley) 1 shared papers
• Ian D. McGreer 1 shared papers
• Isobel M. Hook (ESO) 1 shared papers
• Isobel M. Hook (UC Berkeley) 1 shared papers
• Tzu-Ching Chang (Berkeley) 1 shared papers