Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Kembhavi, A K"'
Autor:
Abraham, Linn, Abraham, Sheelu, Kembhavi, Ajit K., Philip, N. S., Aniyan, A. K., Barway, Sudhanshu, Kumar, Harish
Morphological features in galaxies, like spiral arms, bars, rings, tidal tails etc. carry information about their structure, origin and evolution. It is therefore important to catalog and study such features and to correlate them with other basic gal
Externí odkaz:
http://arxiv.org/abs/2404.04484
Autor:
Katsanevas, Stavros, Sanders, Gary, Berger, Beverly, González, Gabriela, Hough, James, Kembhavi, Ajit K., McClelland, David, Ohashi, Masatake, Ricci, Fulvio, Whitcomb, Stan, Punturo, Michele, Reitze, David, Couvares, Peter, Kajita, Takaaki, Kalogera, Vicky, Lueck, Harald, Rowan, Sheila, Sathyaprakash, B. S., Shoemaker, David, Brand, Jo van den
The construction of a global network of detectors is the cornerstone to scientific success for 3rd generation gravitational wave astronomy. If carried out with a vision to the future, the third generation implementation, in its infrastructure, techno
Externí odkaz:
http://arxiv.org/abs/2111.06989
Autor:
Singhal, Akshat, Bhalerao, Varun, Mahabal, Ashish A., Vaghmare, Kaustubh, Jagade, Santosh, Kulkarni, Sumeet, Vibhute, Ajay, Kembhavi, Ajit K., Drake, Andrew J., Djorgovski, S George, Graham, Matthew J., Donalek, Ciro, Christensen, Eric, Larson, Stephen, Beshore, Edward C.
A number of synoptic sky surveys are underway or being planned. Typically they are done with small telescopes and relatively short exposure times. A search for transient or variable sources involves comparison with deeper baseline images, ideally obt
Externí odkaz:
http://arxiv.org/abs/2108.00029
Autor:
Mallick, Labani, Alston, William N., Parker, Michael L., Fabian, Andrew C., Pinto, Ciro, Dewangan, Gulab C., Markowitz, Alex, Gandhi, Poshak, Kembhavi, Ajit K., Misra, R.
We present the first results from a detailed spectral-timing analysis of a long ($\sim$130 ks) XMM-Newton observation and quasi-simultaneous NuSTAR and Swift observations of the highly-accreting narrow-line Seyfert 1 galaxy Mrk 1044. The broadband (0
Externí odkaz:
http://arxiv.org/abs/1804.02703
We present an automated method for the detection of bar structure in optical images of galaxies using a deep convolutional neural network which is easy to use and provides good accuracy. In our study we use a sample of 9346 galaxies in the redshift r
Externí odkaz:
http://arxiv.org/abs/1711.04573
Publikováno v:
Monthly Notices of the Royal Astronomical Society 473 (2018) 3584
We present detailed broadband UV/optical to X-ray spectral variability of the Seyfert 1 galaxy 1H 0419-577 using six XMM-Newton observations performed during 2002-2003. These observations covered a large amplitude variability event in which the soft
Externí odkaz:
http://arxiv.org/abs/1710.01944
We study the relationship between the UV and X-ray variability of the narrow-line Seyfert 1 galaxy 1H~0707-495. Using a year long {\it Swift} monitoring and four long {\it XMM-Newton} observations, we perform cross-correlation analyses of the UV and
Externí odkaz:
http://arxiv.org/abs/1708.08664
S0 galaxies are known to host classical bulges with a broad range of size and mass, while some such S0s are barred and some not. The origin of the bars has remained as a long-standing problem -- what made bar formation possible in certain S0s? By ana
Externí odkaz:
http://arxiv.org/abs/1607.08603
Autor:
Mondal, Aditya S., Dewangan, Gulab C., Pahari, Mayukh, Misra, Ranjeev, Kembhavi, Ajit K., Raychaudhuri, Biplab
Broad relativistic iron lines from neutron star X-ray binaries are important probes of the inner accretion disk. The X-ray reflection features can be weakened due to strong magnetic fields or very low iron abundances such as is possible in X-ray bina
Externí odkaz:
http://arxiv.org/abs/1606.05307
Publikováno v:
MNRAS, 460, 1705-1715 (2016)
We perform X-ray/ultraviolet (UV) spectral and X-ray variability studies of the radio-loud narrow-line Seyfert 1 (NLS1) galaxy RX J1633.3+4719 using XMM-Newton and Suzaku observations from 2011 and 2012. The 0.3-10 keV spectra consist of an ultrasoft
Externí odkaz:
http://arxiv.org/abs/1604.03320