57 citations · 427 across the 31 of their papers we have counts for
27 papers · 1 filter
Thermal Sunyaev-Zel'dovich Effect in the circumgalactic medium - III: does richness matter?
Sanskriti Das, Yi-Kuan Chiang, Smita Mathur
We measure the thermal Sunyaev-Zel'dovich Effect in the circumgalactic/intragroup medium (CGM/IGrM) of 7 million M DESI Legacy Su…
Diffuse HI emission in the circumgalactic medium of NGC891 and NGC4565 - III: azimuthal profiles
Mary Rickel, Sanskriti Das, Nickolas M. Pingel +4
Diffuse HI emission in the circumgalactic medium (CGM) of NGC891 and NGC4565 has been previously shown to trace an inflow along minor axes pointings and to co-rotate with the HI di…
Constraining the Sub-Galactic Relationship Between Star Formation and the Hot Interstellar Medium in NGC 4254
Erik B. Monson, Bret D. Lehmer, Amirnezam Amiri +17
We investigate the relationship between star formation and X-ray emission from the hot interstellar medium (ISM) on kpc scales in NGC 4254 (M99) by combining spatially resolv…
Deep X-ray observation of NGC 3221: everything everywhere all at once
Sanskriti Das, Smita Mathur, Bret D. Lehmer +3
We present a comprehensive analysis of 475 ks (438 ks unpublished & 37 ks archival) XMM-Newton/EPIC-pn observation of a nearby, highly inclined, star-forming, luminous infrared gal…
Resolved HII regions in NGC 253: Ionized gas structure and suggestions of a universal density-surface brightness relation
Rebecca L. McClain, Adam K. Leroy, Enrico Congiu +23
We use the full-disk VLT-MUSE mosaic of NGC 253 to identify 2492 HII regions and study their resolved structure. With an average physical resolution of 17 pc, this is one of the la…
Detection of 'super-virial' gas in the Circumgalactic medium of the Milky Way towards PKS 2155-304
Mukesh Singh Bisht, Sanskriti Das, Smita Mathur +3
We present the first simultaneous detection of four distinct highly ionized absorbing phases using Chandra and XMM-Newton grating spectra toward the blazar PKS 2155…
Thermal Sunyaev-Zel'dovich Effect in the circumgalactic medium -- II: dependence on star formation
Sanskriti Das, Nhut Truong, Yi-Kuan Chiang +1
We measure thermal Sunyaev-Zel'dovich (tSZ) Effect in the circumgalactic medium (CGM) of 2.5 million = WISEDESI galaxies out…
Where is the Supervirial Gas? III. Insights from X-ray Shadow Observations and a revised Model for the Soft Diffuse X-ray Background
Anjali Gupta, Smita Mathur, Joshua Kingsbury +5
Shadow observations provide a powerful tool to separate foreground components of the soft diffuse X-ray background (SDXB) from the background components. Such observations have now…
Where is the Super-virial Gas? II: Insight from the Survey of Galactic Sightlines
Manami Roy, Smita Mathur, Sanskriti Das +3
Recent observations have revealed a super-virial temperature gas phase at log(T/K) in the Milky Way, challenging existing galaxy-formation models. This hot gas phase was di…
Where is the Supervirial hot gas? I: A pilot study with sightlines to Galactic X-ray binaries
Armando Lara-DI, Yair Krongold, Smita Mathur +4
Hot, \logT\ 7.5, gas was recently discovered in the Milky Way in extragalactic sightlines. In order to determine its location, here we present sightlines to Galactic X-ray b…
A Sub-solar Fe/O, logT~7.5 Gas Component Permeating the Milky Way's CGM
Armando Lara-DI, Yair Krongold, Smita Mathur +3
Our study focuses on characterizing the highly ionized gas within the Milky Way's (MW) Circumgalactic Medium (CGM) that gives rise to ionic transitions in the X-ray band 2 - 25 Å.…
Detecting the effect of non-thermal sources on the warm-hot Galactic halo
Sanskriti Das
We report the first detection of non-thermal broadening of OVII lines in the warm-hot K circumgalactic medium (CGM) of the Milky Way. We use =0 absorption of OVII…
Detection of diffuse HI emission in the circumgalactic medium of NGC891 and NGC4565 -- II
Sanskriti Das, Mary Rickel, Adam Leroy +6
We probe the neutral circumgalactic medium (CGM) along the major axes of NGC891 and NGC4565 in 21-cm emission out to kpc using the Green Bank Telescope (GBT), extendin…
Super-virial Hot Phase in Milky Way Circumgalactic Medium: Further Evidences
Rebecca McClain, Smita Mathur, Sanskriti Das +2
Recent discoveries of a super-virial hot phase of the Milky Way circumgalactic medium (CGM) has launched new questions regarding the multi-phase structure of the CGM around the Gal…
Probing the hot circumgalactic medium of external galaxies in X-ray absorption II: a luminous spiral galaxy at
Smita Mathur, Sanskriti Das, Anjali Gupta +1
The circumgalactic medium (CGM) is the most massive baryonic component of a spiral galaxy, shock heated to about K for an galaxy. The CGM of the Milky Way has…
Detection of thermal Sunyaev-Zel'dovich Effect in the circumgalactic medium of low-mass galaxies -- a surprising pattern in self-similarity and baryon sufficiency
Sanskriti Das, Yi-Kuan Chiang, Smita Mathur
We report on the measurement of the thermal Sunyaev-Zel'dovich (tSZ) Effect in the circumgalactic medium (CGM) of 641,923 galaxies with = at…
Detection of a Super-Virial Hot Component in the Milky Way Circumgalactic Medium Along Multiple Sight-Lines by Using the Stacking Technique
Armando Lara-DI, Smita Mathur, Yair Krongold +2
The study of the elusive hot component ( K) of the Milky Way circumgalactic medium (CGM) is a novel topic to understand Galactic formation and evolution. In this wo…
The hot circumgalactic medium of the Milky-Way: new insights from XMM-Newton observations
Joy Bhattacharyya, Sanskriti Das, Anjali Gupta +2
We present XMM-Newton observations around the sightline of Mrk 421. The emission spectrum of the Milky Way circumgalactic medium (CGM) shows that a two phase model is a better fit…
Thermal and chemical properties of the eROSITA bubbles from Suzaku observations
Anjali Gupta, Smita Mathur, Josh Kingsbury +2
The X-ray bright bubbles at the Galactic Center provide an opportunity to understand the effects of feedback on galaxy evolution. The shells of the eROSITA bubbles show enhanced X-…
The hot circumgalactic medium of the Milky Way: evidence for super-virial, virial, and sub-virial temperature, non-solar chemical composition, and non-thermal line broadening
Sanskriti Das, Smita Mathur, Anjali Gupta +1
For the first time, we present the simultaneous detection and characterization of three distinct phases at K in absorption, using deep observations tow…
Probing the Warm-Hot Circumgalactic Medium with broad OVI and X-rays
Smita Mathur, Anjali Gupta, Sanskriti Das +2
Most of the baryonic mass in the circumgalactic medium (CGM) of a spiral galaxy is believed to be warm-hot, with temperature around K. The narrow OVI absorption lines probe a…
Empirical estimates of the Galactic halo contribution to the dispersion measures of extragalactic fast radio bursts using X-ray absorption
Sanskriti Das, Smita Mathur, Anjali Gupta +2
We provide an empirical list of the Galactic dispersion measure () contribution to the extragalactic fast radio bursts along 72 sightlines. It is independent of any model…
Detection of the diffuse HI emission in the Circumgalactic Medium of NGC 891 and NGC 4565
Sanskriti Das, Amy Sardone, Adam K. Leroy +5
We present detections of 21-cm emission from neutral hydrogen (HI) in the circumgalactic medium (CGM) of the local edge-on galaxies NGC 891 and NGC 4565 using the Robert C. Byrd Gr…
The warm-hot, extended, massive circumgalactic medium of NGC 3221: an XMM-Newton discovery
Sanskriti Das, Smita Mathur, Anjali Gupta
Using Suzaku data, we had found a evidence for the X-ray emitting warm-hot circumgalactic medium (CGM) in the L galaxy NGC 3221. Here we present XMM-Newton data and…