Zobrazeno 1 - 10
of 280
pro vyhledávání: '"Sigurdsson, Steinn"'
Autor:
Brinn, Shamsi, Cameron, Christopher, Fielding, David, Frankston, Charles, Fromme, Alison, Huang, Peter, Nazzaro, Mark, Orphan, Stephanie, Sigurdsson, Steinn, Tay, Ryan, Yang, Miranda, Zhou, Qianyu
The research content hosted by arXiv is not fully accessible to everyone due to disabilities and other barriers. This matters because a significant proportion of people have reading and visual disabilities, it is important to our community that arXiv
Externí odkaz:
http://arxiv.org/abs/2212.07286
Autor:
Natarajan, Priyamvada, Tang, Kwok Sun, McGibbon, Robert, Khochfar, Sadegh, Nord, Brian, Sigurdsson, Steinn, Tricot, Joe, Cappelluti, Nico, George, Daniel, Hidary, Jack
We present QUOTAS, a novel research platform for the data-driven investigation of super-massive black hole (SMBH) populations. While SMBH data sets -- observations and simulations -- have grown rapidly in complexity and abundance, our computational e
Externí odkaz:
http://arxiv.org/abs/2103.13932
Autor:
Breiding, Peter, Burke-Spolaor, Sarah, Eracleous, Michael, Bogdanović, Tamara, Lazio, T. Joseph W., Runnoe, Jessie, Sigurdsson, Steinn
In several previous studies, quasars exhibiting broad emission lines with >1000 km/s velocity offsets with respect to the host galaxy rest frame have been discovered. One leading hypothesis for the origin of these velocity-offset broad lines is the d
Externí odkaz:
http://arxiv.org/abs/2103.14176
Autor:
Nguyen, Khai, Bogdanovic, Tamara, Runnoe, Jessie C., Taylor, Stephen R., Sesana, Alberto, Eracleous, Michael, Sigurdsson, Steinn
Publikováno v:
ApJL, 900, L42 (2020)
We estimate the merger timescale of spectroscopically-selected, subparsec supermassive black hole binary (SMBHB) candidates by comparing their expected contribution to the gravitational wave background (GWB) with the sensitivity of current pulsar tim
Externí odkaz:
http://arxiv.org/abs/2006.12518
Autor:
Stefansson, Gudmundur, Cañas, Caleb, Wisniewski, John, Robertson, Paul, Mahadevan, Suvrath, Maney, Marissa, Kanodia, Shubham, Beard, Corey, Bender, Chad F., Brunt, Peter, Clemens, J. Christopher, Cochran, William, Diddams, Scott A., Endl, Michael, Ford, Eric B., Fredrick, Connor, Halverson, Samuel, Hearty, Fred, Hebb, Leslie, Huehnerhoff, Joseph, Jennings, Jeff, Kaplan, Kyle, Levi, Eric, Lubar, Emily, Metcalf, Andrew J., Monson, Andrew, Morris, Brett, Ninan, Joe P., Nitroy, Colin, Ramsey, Lawrence, Roy, Arpita, Schwab, Christian, Sigurdsson, Steinn, Terrien, Ryan, Wright, Jason T.
We validate the discovery of a 2 Earth radii sub-Neptune-size planet around the nearby high proper motion M2.5-dwarf G 9-40 (EPIC 212048748), using high-precision near-infrared (NIR) radial velocity (RV) observations with the Habitable-zone Planet Fi
Externí odkaz:
http://arxiv.org/abs/1912.00291
Autor:
Nguyen, Khai, Bogdanovic, Tamara, Runnoe, Jessie C., Eracleous, Michael, Sigurdsson, Steinn, Boroson, Todd
We present a method for comparing the H$\beta$ emission-line profiles of observed supermassive black hole (SBHB) candidates and models of sub-parsec SBHBs in circumbinary disks. Using the approach based on principal component analysis we infer the va
Externí odkaz:
http://arxiv.org/abs/1908.01799
Autor:
Wright, Jason T., Sigurdsson, Steinn
Progress in stellar precise radial velocity work will require the stellar, exoplanetary, and instrument scientists in the precise RV community to be better engaged with the heliophysics community. This engagement will require funding for close collab
Externí odkaz:
http://arxiv.org/abs/1907.04635
Autor:
Metcalf, Andrew J., Anderson, Tyler, Bender, Chad F., Blakeslee, Scott, Brand, Wesley, Carlson, David R., Cochran, William D., Diddams, Scott A., Endl, Michael, Fredrick, Connor, Halverson, Sam, Hickstein, Dan D., Hearty, Fred, Jennings, Jeff, Kanodia, Shubham, Kaplan, Kyle F., Levi, Eric, Lubar, Emily, Mahadevan, Suvrath, Monson, Andrew, Ninan, Joe P., Nitroy, Colin, Osterman, Steve, Papp, Scott B., Quinlan, Franklyn, Ramsey, Larry, Robertson, Paul, Roy, Arpita, Schwab, Christian, Sigurdsson, Steinn, Srinivasan, Kartik, Stefansson, Gudmundur, Sterner, David A., Terrien, Ryan, Wolszczan, Alex, Wright, Jason T., Ycas, Gabriel
Publikováno v:
V6, Issue 2, pp. 233-239 (2019)
The discovery and characterization of exoplanets around nearby stars is driven by profound scientific questions about the uniqueness of Earth and our Solar System, and the conditions under which life could exist elsewhere in our Galaxy. Doppler spect
Externí odkaz:
http://arxiv.org/abs/1902.00500
Autor:
Fox, Derek B., Sigurdsson, Steinn, Shandera, Sarah, Mészáros, Peter, Murase, Kohta, Mostafá, Miguel, Coutu, Stephane
The ANITA collaboration have reported observation of two anomalous events that appear to be $\varepsilon_{\rm cr} \approx 0.6$ EeV cosmic ray showers emerging from the Earth with exit angles of $27^\circ$ and $35^\circ$, respectively. While EeV-scale
Externí odkaz:
http://arxiv.org/abs/1809.09615
Autor:
Nguyen, Khai, Bogdanovic, Tamara, Runnoe, Jessie C., Eracleous, Michael, Sigurdsson, Steinn, Boroson, Todd
We present an improved semi-analytic model for calculation of the broad optical emission-line signatures from sub-parsec supermassive black hole binaries (SBHBs) in circumbinary disks. The second-generation model improves upon the treatment of radiat
Externí odkaz:
http://arxiv.org/abs/1807.09782