Bohdan Paczyński 1940–2007

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Monitoring Variability of the Sky Bohdan

Variability in the sky has been known for centuries, even millennia, but our knowledge of it is very incomplete even at the bright end. Current technology makes it possible to built small, robotic optical instruments, to record images and to process data in real time, and to archive them on-line, all at a low cost. In addition to obtaining complete catalogs of all kinds of variable objects, spe...

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Bohdan’s Impact on Our Understanding of Gamma-ray Bursts

Bohdan Paczyński was one of the pioneers of the cosmological GRB model. His ideas on how GRBs operate and what are their progenitors have dominated the field of GRBs in the hectic nineties during which the distances and the origin of GRBs were revealed. I discuss here Bohdan’s contributions in some historical perspective.

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Pulseless Disease due to Branchial Arteritis By BOHDAN

REPEATED reports from Japan and from north European countries have brought attention to a new clinical syndrome called "pulseless, or Takayasu disease." The condition is found in young women and is characterized by thrombosis of the vessels deriving from the arch of the aorta associated with cerebral, ocular, and upper extremity symptoms. Its etiology is obscure. We are presenting a case of thi...

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Bohdan Zelinka INDEPENDENT SET DOMINATING SETS IN BIPARTITE GRAPHS

The paper continues the study of independent set dominating sets in graphs which was started by E. Sampathkumar. A subset D of the vertex set V (G) of a graph G is called a set dominating set (shortly sd−set) in G, if for each set X ⊆ V (G) −D there exists a set Y ⊆ D such that the subgraph 〈X ∪ Y 〉 of G induced by X ∪ Y is connected. The minimum number of vertices of an sd−set in G is called t...

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1. PERSONNEL During the reporting year the research staff consisted of Neta Bahcall, Renyue Cen, Bruce

During the reporting year the research staff consisted of Neta Bahcall, Renyue Cen, Bruce Draine, Edward Fitzpatrick, Jeremy Goodman, J. Richard Gott, James Gunn, Edward Jenkins, Gillian Knapp, Russell Kulsrud, Jeremiah Ostriker, Bohdan Paczyński, David Spergel, Michael Strauss, Scott Tremaine and Edwin Turner, as well as postdoctoral fellows Greg Bryan, Alex Lazarian, Željko Ivezić, Todd Tripp...

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ژورنال

عنوان ژورنال: Astronomy & Geophysics

سال: 2007

ISSN: 1468-4004,1366-8781

DOI: 10.1111/j.1468-4004.2007.48439_2.x