Zobrazeno 1 - 10
of 430
pro vyhledávání: '"Perlman, Eric"'
Autor:
Meyer, Eileen T., Shaik, Aamil, Tang, Yanbo, Reid, Nancy, Reddy, Karthik, Breiding, Peter, Georganopoulos, Markos, Chiaberge, Marco, Perlman, Eric, Clautice, Devon, Sparks, William, DeNigris, Nat, Trevor, Max
Unexpectedly strong X-ray emission from extragalactic radio jets on kiloparsec scales has been one of the major discoveries of Chandra, the only X-ray observatory capable of sub-arcsecond-scale imaging. The origin of this X-ray emission, which appear
Externí odkaz:
http://arxiv.org/abs/2305.19408
Autor:
Breiding, Peter, Chiaberge, Marco, Lambrides, Erini, Meyer, Eileen T., Willner, S. P., Hilbert, Bryan, Haas, Martin, Miley, George, Perlman, Eric S., Barthel, Peter, O'Dea, Christopher P., Capetti, Alessandro, Wilkes, Belinda, Baum, Stefi A., Macchetto, Duccio F., Tremblay, Grant, Norman, Colin
Publikováno v:
ApJ 963 91 (2024)
While supermassive black holes are ubiquitous features of galactic nuclei, only a small minority are observed during episodes of luminous accretion. The physical mechanism(s) driving the onset of fueling and ignition in these active galactic nuclei (
Externí odkaz:
http://arxiv.org/abs/2305.11804
We report a 325(-7, +8) day quasi-periodic oscillation (QPO) in the X-ray emission of the blazar Mkn 421, based on data obtained with the Rossi X-ray Timing Explorer (RXTE). The QPO is seen prominently in the ASM data (at least 15 cycles), due to the
Externí odkaz:
http://arxiv.org/abs/2305.07510
Autor:
Sawant, Sailee M., Kosak, Katie, Li, Kunyang, Avachat, Sayali S., Perlman, Eric S., Mitra, Debasis
We present a three-dimensional (3-D) visualization of jet geometry using numerical methods based on a Markov Chain Monte Carlo (MCMC) and limited memory Broyden-Fletcher-Goldfarb-Shanno (BFGS) optimized algorithm. Our aim is to visualize the 3-D geom
Externí odkaz:
http://arxiv.org/abs/2210.03033
Autor:
Knote, Matthew F., Caballero-Nieves, Saida M., Gokhale, Vayujeet, Johnston, Kyle B., Perlman, Eric S.
The O'Connell effect - the presence of unequal maxima in eclipsing binaries - remains an unsolved riddle in the study of close binary systems. The Kepler space telescope produced high precision photometry of nearly 3,000 eclipsing binary systems, pro
Externí odkaz:
http://arxiv.org/abs/2206.04142
Autor:
Ng, Y. Jack, Perlman, Eric S.
Quantum fluctuations can endow spacetime with a foamy structure. In this review article we discuss our various proposals to observationally constrain models of spacetime foam. One way is to examine if the light wave-front from a distant quasar or GRB
Externí odkaz:
http://arxiv.org/abs/2205.12852
Autor:
Perlman, Eric S., Meyer, Eileen T., Wang, Q. Daniel, Yuan, Qiang, Henriksen, Richard, Irwin, Judith, Li, Jiangtao, Wiegert, Theresa, Li, Haochuan
Tidal disruption events (TDEs) occur when a star passes close enough to a galaxy's supermassive black hole to be disrupted by tidal forces. We discuss new observations of IGRJ12580+0134, a TDE observed in NGC 4845 (d=17 Mpc) in November 2010, with th
Externí odkaz:
http://arxiv.org/abs/2111.10441
We report the discovery of a ~6-week quasi-periodic oscillation (QPO) in archival NGC 4945 data observed by the Rossi X-ray Timing Explorer (RXTE) satellite. QPOs are an important observable in accretion disks and have been studied extensively in bot
Externí odkaz:
http://arxiv.org/abs/2009.13393
Autor:
Perlman, Eric S., Meyer, Eileen, Eilek, Jean, Tchekhovskoy, Sasha, Nyland, Kristina, Agudo, Ivan, Baum, Stefi, Hardcastle, Martin, Kadler, Matthias, Labiano, Alvaro, Marshall, Herman, ODea, Christopher, Worrall, Diana
Jets are a ubiquitous part of the accretion process, created in AGN, by a coupling between the magnetic field near the central black hole and inflowing material. We point out what advances can be achieved by new technologies, concentrating on kilopar
Externí odkaz:
http://arxiv.org/abs/1903.03657
Autor:
Perlman, Eric S., Birkinshaw, Mark, Kadler, Matthias, Komissarov, Serguei, Lister, Matthew, Meier, David, Meyer, Eileen, Nakamura, Masanori, Nyland, Kristina, ODea, Christopher, Worrall, Diana, Zdziarski, Andrzej
Jets are a ubiquitous part of the accretion process, seen in a wide variety of objects ranging from active galaxies (AGN) to X-ray binary stars and even newly formed stars. AGN jets are accelerated by the supermassive black hole of their host galaxy
Externí odkaz:
http://arxiv.org/abs/1902.10263